1. Field of the Invention
The subject invention relates to alignment devices and methods and, more particularly, to devices and methods for aligning an antenna with a satellite.
2. Description of the Invention Background
The advent of the television can be traced as far back to the end of the nineteenth century and beginning of the twentieth century. However, it wasn't until 1923 and 1924, when Vladimir Kosma Zworkykin invented the iconoscope, a device that permitted pictures to be electronically broken down into hundreds of thousands of components for transmission, and the kinescope, a television signal receiver, did the concept of television become a reality. Zworkykin continued to improve those early inventions and television was reportedly first showcased to the world at the 1939 World's Fair in New York, where regular broadcasting began.
Over the years, many improvements to televisions and devices and methods for transmitting and receiving television signals have been made. In the early days of television, signals were transmitted via terrestrial radio networks and received through the use of antennas. Signal strength and quality, however, were often dependent upon the geography of the land between the transmitting antenna and the receiving antenna. Although such transmission methods are still in use today, the use of satellites to transmit television signals is becoming more prevalent. Because satellite transmitted signals are not hampered by hills, trees, mountains, etc., such signals typically offer the viewer more viewing options and improved picture quality. Thus, many companies have found offering satellite television services to be very profitable and, therefore, it is anticipated that more and more satellites will be placed in orbit in the years to come. As additional satellites are added, more precise antenna/satellite alignment methods and apparatuses will be-required.
Modern digital satellite communication systems typically employ a ground-based transmitter that beams an uplink signal to a satellite positioned in geosynchronous orbit. The satellite relays the signal back to ground-based receivers. Such systems permit the household or business subscribing to the system to receive audio, data and video signals directly from the satellite by means of a relatively small directional receiver antenna. Such antennas are commonly affixed to the roof or wall of the subscriber's residence or are mounted to a tree or mast located in the subscriber's yard. A typical antenna constructed to received satellite signals comprises a dish-shaped reflector that has a support arm protruding outward from the front surface of the reflector. The support arm supports a low noise block amplifier with an integrated feed “LNBF”. The reflector collects and focuses the satellite signal onto the LNBF which is connected, via cable, to the subscriber's television.
To obtain an optimum signal, the antenna must be installed such that the centerline axis of the reflector, also known as the “bore site” or “pointing axis”, is accurately aligned with the satellite. To align an antenna with a particular satellite, the installer must be provided with accurate positioning information for that particular satellite. For example, the installer must know the proper azimuth and elevation settings for the antenna. The azimuth setting is the compass direction that the antenna should be pointed relative to magnetic north. The elevation setting is the angle between the Earth and the satellite above the horizon. Many companies provide installers with alignment information that is specific to the geographical area in which the antenna is to be installed. Also, as the satellite orbits the earth, it may be so oriented such that it sends a signal that is somewhat skewed. To obtain an optimum signal, the antenna must also be adjustable to compensate for a skewed satellite orientation.
The ability to quickly and accurately align the centerline axis of antenna with a satellite is somewhat dependent upon the type of mounting arrangement employed to support the antenna. Prior antenna mounting arrangements typically comprise a mounting bracket that is directly affixed to the rear surface of the reflector. The mounting bracket is then attached to a vertically oriented mast that is buried in the earth, mounted to a tree, or mounted to a portion of the subscriber's residence or place of business. The mast is installed such that it is plumb (i.e., relatively perpendicular to the horizon). Thereafter, the installer must orient the antenna to the proper azimuth and elevation. These adjustments are typically made at the mounting bracket. Prior mounting brackets commonly employ a collection of bolts that must first be loosened to permit the antenna to be adjusted in one of the desired directions. After the installer initially positions the antenna in the desired position, the locking bolts for that portion of the bracket are tightened and other bolts are loosened to permit the second adjustment to be made. It will be appreciated that the process of tightening the locking bolts can actually cause the antenna to move out of its optimum position which can deteriorate the quality of the signal or, in extreme situations, require the installer to re-loosen the bolts and begin the alignment process over again. Furthermore, such mounting apparatuses cannot accommodate relatively fine adjustments to the antenna. In addition, because such crude bracket arrangements are attached directly to the rear of the reflector, they can detract from the reflector's aesthetic appearance.
One method that has been employed in the past for indicating when the antenna has been positioned at a proper azimuth orientation is the use of a compass that is manually supported by the installer under the antenna's support arm. When using this approach however, the installer often has difficulty elevating the reflector to the proper elevation so that the antenna will be properly aligned and then retaining the antenna in that position while the appropriate bolts and screws have been tightened. The device disclosed in U.S. Pat. No. 5,977,922 purports to solve that problem by affixing a device to the support arm that includes a compass and a inclinometer. In this device, the support arm can move slightly relative to the reflector and any such movement or misalignment can contribute to pointing error. Furthermore, devices that are affixed to the support arm are not as easily visible to the installer during the pointing process. In addition, there are many different types and shapes of support arms which can require several different adapters to be available to the installer. It will also be understood that the use of intermediate adapters could contribute pointing error if they do not interface properly with the support arm.
Another method that has been used in the past to align the antenna with a satellite involves the use of a “set top” box that is placed on or adjacent to the television to which the antenna is attached. A cable is connected between the set top box and the antenna. The installer initially points the antenna in the general direction of the satellite, then fine-tunes the alignment by using a signal strength meter displayed on the television screen by the set top box. The antenna is adjusted until the onscreen meter indicates that signal strength and quality have been maximized. In addition to the onscreen display meter, many set top boxes emit a repeating tone. As the quality of the signal improves, the frequency of the tones increases. Because the antenna is located outside of the building in which the television is located, such installation method typically requires two individuals to properly align the antenna. One installer positions the antenna while the other installer monitors the onscreen meter and the emitted tones. One individual can also employ this method, but that person typically must make multiple trips between the antenna and the television until the antenna is properly positioned. Thus, such alignment methods are costly and time consuming.
In an effort to improve upon this shortcoming, some satellite antennas have been provided with a light emitting diode (“LED”) that operates from feedback signals fed to the antenna by the set top box through the link cable. The LED flashes to inform the installer that the antenna has been properly positioned. It has been noted, however, that the user is often unable to discern small changes in the flash rate of the LED as antenna is positioned. Thus, such approach may result in antenna being positioned in a orientation that results in less than optimum signal quality. Also, this approach only works when the antenna is relative close to its correct position. It cannot be effectively used to initially position the antenna. U.S. Pat. No. 5,903,237 discloses a microprocessor-operated antenna pointing aid that purports to solve the problems associated with using an LED indicator to properly orient the antenna.
Such prior antenna mounting devices and methods do not offer a relatively high amount of alignment precision. Furthermore, they typically require two or more installers to complete the installation and alignment procedures. As additional satellites are sent into space, the precision at which an antenna is aligned with a particular satellite becomes more important to ensure that the antenna is receiving the proper satellite signal and that the quality of that signal has been optimized. It is also desirable to have an antenna alignment device that can be effectively used by one installer.
There is a need for a method for aligning an antenna with a satellite that can be quickly, accurately, and efficiently employed by one installer.
In accordance with one form of the present invention, there is provided a method for aligning an antenna with a satellite that includes removably attaching a compass to a rear portion of the antenna and moving the antenna to a position wherein the compass displays a reading that corresponds to a predetermined azimuth reading. Thereafter, the antenna is locked in that position. These methods can employ a digital compass or a non-digital compass.
Another embodiment of the invention comprises a method for aligning an antenna with a satellite that includes removably attaching a level to a rear portion of the antenna and orienting the antenna in a position wherein the level displays a reading that corresponds to a predetermined elevation reading. Thereafter, the antenna is locked in that position. These methods can employ a digital level and a non-digital level.
Another method for aligning an antenna with a satellite of the present invention comprises removably attaching a compass and a level to a rear portion of the antenna. Thereafter, the antenna is oriented about a first axis to a first orientation wherein the compass displays a reading that corresponds to a predetermined azimuth reading. The antenna is retained in that orientation about the first axis while it is further oriented about a second axis until the level displays a reading that corresponds to a predetermined elevation reading. The antenna is then retained in the second orientation about the second axis.
Another embodiment of the invention comprises a method of aligning a centerline of an antenna with a satellite, wherein the antenna has a feed/LNBF assembly that is electronically coupled to a set top box which is electronically coupled to a television that has a television speaker therein. The method further comprises affixing an audio speaker to the antenna and operating the set top box and television such that a series of tones are emitted from the television speaker which are indicative of the alignment of the antenna centerline with the satellite. The method also includes transmitting the series of tones to the audio speaker affixed to the antenna and positioning the antenna until the series of tones being transmitted to the speaker affixed to the antenna have a desired frequency.
Yet another method of the present invention comprises a method of aligning a centerline of an antenna with a satellite, wherein the antenna has a feed/LNBF assembly that is electronically coupled to a set top box which is electronically coupled to a television having a television speaker therein. The method includes removably attaching a compass, a level and a speaker to the antenna and orienting the antenna about a first axis to a first orientation wherein the compass displays a reading that corresponds to a predetermined azimuth reading. The antenna is then retained in the first orientation about the first axis. The antenna is also oriented about a second axis to a second orientation until the level displays a reading that corresponds to a predetermined elevation reading. The antenna is then retained in the second orientation about the second axis. The method also includes operating the set top box and television such that a series of tones are emitted from the television speaker which are indicative of the alignment of the antenna centerline with the satellite and transmitting the series of tones to the audio speaker affixed to the antenna. In addition, the method includes reorienting the antenna about the first and second axes as necessary to a final orientation wherein the series of tones being transmitted to the speaker affixed to the antenna have a desired frequency. The antenna is thereafter locked in the final orientation.
Another method of the present invention comprises a method for aligning an antenna with a satellite wherein the method includes removably attaching an alignment device that has first and second digital levels therein to the antenna, the first and second digital levels cooperating to display a reading indicative of the antenna's skew orientation. The method also includes orienting the antenna about a first axis to a first orientation wherein the first digital level displays a reading that corresponds to a predetermined elevation reading and retaining the antenna in the first orientation. In addition, the method includes further orienting the antenna to another position wherein the first and second digital levels produce a skew reading that corresponds to a predetermined skew reading and locking the antenna in the another position.
Another method of the present invention includes a method of aligning a centerline of an antenna with a satellite, wherein the antenna has a feed/LNBF assembly that is electronically coupled to a set top box which is electronically coupled to a television having a television speaker therein. The method includes removably attaching an alignment device that has a compass, a speaker, and first and second digital levels therein to the antenna. The first and second digital levels cooperate to display a reading indicative of the antenna's skew orientation. In addition, the method includes orienting the antenna about a first axis to a first orientation wherein the compass displays a reading that corresponds to a predetermined azimuth reading. The antenna is retained in the first orientation about the first axis. The antenna is also moved about a second axis to a second orientation until the first digital level displays a reading that corresponds to a predetermined elevation reading. The antenna is then retained in the second orientation about the second axis. The antenna is further oriented to a third orientation position wherein the first and second digital levels produce a skew reading that corresponds to a predetermined skew reading. The antenna is then retained in the third orientation. The set top box is then operated such that a series of tones are emitted from the television speaker which are indicative of the alignment of the antenna centerline with the satellite and those tones are transmitted to the audio speaker. The antenna is reoriented as necessary to a final orientation wherein the series of tones being transmitted to the speaker affixed to the antenna have a desired frequency and the antenna is locked in the final orientation.
Another method of the present invention comprises a method of aligning a centerline of an antenna with a satellite, wherein the antenna has a feed/LNBF assembly that is electronically coupled to a set top box which is electronically coupled to a television having a television speaker therein. The method includes mounting an adjustable mounting bracket to a structure. The adjustable mounting bracket has a first movable portion and a second movable portion that is attached to the first movable portion. An end of a mast is affixed to the antenna such that the mast is coaxially aligned with the centerline of the antenna. The other end of the mast is supported in the second movable portion of the adjustable mounting bracket. An alignment device that has a compass, a speaker, and first and second digital levels therein is attached to the antenna. The first and second digital levels cooperate to display a reading indicative of the antenna's skew orientation to the antenna. The first movable portion of the adjustable mounting bracket is moved about a first axis to a first position wherein the antenna is oriented in a first orientation wherein the compass displays a reading that corresponds to a predetermined azimuth reading. The first movable portion is retained in the first position. The second movable portion of the adjustable mounting bracket is moved about a second axis to a second position wherein the antenna is oriented in a second orientation wherein the first digital level displays a reading that corresponds to a predetermined elevation reading. The other end of the mast is rotated within the second portion of the adjustable mounting bracket until the antenna is in a third orientation wherein the first and second digital levels produce a skew reading that corresponds to a predetermined skew reading. The antenna is retained in the third orientation.
The set top box and television are operated to produce a series of tones from the television speaker which are indicative of the alignment of the antenna centerline with the satellite and those tones are transmitted to the audio speaker. The first and second movable portions and the mast within the second movable portion are repositioned as necessary to move the antenna to a final orientation wherein the series of tones being transmitted to the speaker affixed to the antenna have a desired frequency. The mast is then locked to the second movable portion and the first and second movable portions are locked to prevent further movement thereof.
It is a feature of the present invention to provide methods for quickly and efficiently aligning an antenna with a satellite such that the antenna receives and optimal signal from the satellite.
It is another feature of the present invention to provide methods having the above-mentioned attributes that can be efficiently used by one installer.
Accordingly, the present invention provides solutions to the shortcomings of prior methods for orienting antennas for receiving satellite signals. Those of ordinary skill in the art will readily appreciate, however, that these and other details, features and advantages will become further apparent as the following detailed description of the embodiments proceeds.
In the accompanying Figures, there are shown present embodiments of the invention wherein like reference numerals are employed to designate like parts and wherein:
Referring now to the drawings for the purposes of illustrating embodiments of the invention only and not for the purposes of limiting the same,
Antenna 20 must be properly positioned to receive the television signals transmitted by the satellite 14 to provide optimal image and audible responses. This positioning process involves accurately aligning the antenna's centerline axis A—A, with the satellite's output signal. “Elevation”, “azimuth” and “skew” adjustments are commonly required to accomplish this task. As shown in
Turning to
The mounting member 110 pivotally supports a support member 140. In one embodiment, the support member 140 includes a pair of side plates (142, 146), a bottom portion 150 and a top portion 154. The support member 140 may be fabricated from metal, such as aluminum, stainless steel, galvanized steel, etc. and be of welded or stamped construction or the various portions of the support member 140 may be interconnected utilizing other conventional fasteners. It will be further appreciated, however, that the support member 140 could be molded or otherwise fabricated from a polymeric material or other non-corrosive material. As can be seen in
The arcuate top slot 168 is radially aligned about the center of hole 122 through which axis G—G extends. Similarly, the arcuate bottom slot 170 is radially aligned about the center of hole 126 through which the first pivot axis G—G extends. Slot 168 is sized to slidably receive a portion of the locking screw 166 therethrough. The center of arcuate slot 168 is oriented at a radius “R” with respect to the center of hole 122. The arcuate slot 170 is sized to slidably receive a portion of the locking screw 72 therein. The center of arcuate slot 170 is oriented at a radius “R′” that is equal to radius R. See FIG. 6. Those of ordinary skill in the art will appreciate that when the locking screws (166, 172, 174, 176) are loosened, the support member 140 can pivot about the first pivot axis G—G relative to the mounting member 110.
Also in this embodiment, to control the pivotal travel of the support member 140 about the first pivot axis G—G and to positively retain the support member 140 in position while the locking screws (166, 172, 174, 176) are tightened, a “first adjustment assembly” or “first means for retaining”, generally designated as 165, is provided. More specifically and with reference to
In this embodiment, the skilled artisan will appreciate that, after the locking screws (166, 172, 174, 176) have been loosened, the support member 140 may be selectively pivoted about the first pivot axis G—G in the directions represented by arrows “H” and “I” by rotating the first adjustment bolt 181 in the appropriate directions. See FIG. 9. After the support member 140 has been pivoted to a desired position about the first pivot axis G—G, it may be “locked” in position by tightening screws (166, 172, 174, 176).
This embodiment of the mounting bracket 100 of the present invention further comprises an object support member or mast support member 190 that is pivotally supported by the support member 140. While the mast support member 190 as described herein is particularly suited for supporting an antenna mast therein, those of ordinary skill in the art will appreciate that the mast support member may be constructed to support a variety of other objects without departing from the spirit and scope of the present invention. It will be further appreciated that for applications wherein pivotal travel of the object about a single axis (i.e., axis G—G) is required, the mast support member 190 may be rigidly attached to the support member 140 or comprise an integral portion of the support member 140. As can be seen in
Also in this embodiment, to control the pivotal travel of the mast support member 190 about the second pivot axis J—J and to positively retain the mast support member 190 in position about the second pivot axis J—J while the lock nuts (198, 210) are tightened, a second adjustment assembly or “second means for retaining”, generally designated as 200 is provided. In this embodiment, the second adjustment assembly or second means for retaining 200 includes a second shoulder bolt 201. More particularly and with reference to
The second adjustment assembly or second means for retaining 200 of this embodiment also includes a “second rotatable adjustment member” which may comprise a second threaded adjustment bolt 222 that extends through a non-threaded hole 226 in a front plate member 224 that comprises a portion of the support member 140. Adjustment bolt 222 further extends through a non-threaded hole 228 in a rear plate 230 that comprises a portion of the support member 140. Adjustment bolt 222 is rotatably supported on the front plate 224 and the rear plate 230 by a lock nut 232. See
To use this embodiment of the mounting bracket 100 of the present invention, the mounting member 110 is attached to a support member such as a wall, tree, support mast, etc. For example, as illustrated in
After the mounting member 110 has been mounted to a support structure, the antenna mast 15 is inserted into the mast-receiving socket 192 in the mast support member 190. Antenna mast 15 may be retained in the socket 192 by one or more retaining screws 193 that are threaded into engagement with the antenna mast 15. See FIG. 11. However, other fasteners and attachment methods may be employed for affixing the antenna mast 15 to the antenna mast support member 190. In this embodiment, the antenna 20 is connected to the mounting mast 15 by a rearwardly extending portion 44 of the support arm 40. A socket 46 is provided in the rearwardly extending portion 44 for receiving the other end of the antenna mast 15 therein. The mast is retained in the socket 46 by locking screws 47. See
In the antenna design depicted in
After the antenna has been attached to the mounting bracket 100, the antenna's azimuth may be easily adjusted by loosening the lock screws (166, 172, 174, 176). Thereafter, the first adjustment bolt 181 is rotated in the appropriate direction to cause the support member 140 to pivot in a desired direction about the first pivot axis G—G. Such rotation of the adjustment bolt causes the pivoting of the support member 140 about the first pivot axis G—G in a controlled manner. Those of ordinary skill in the art will appreciate that the first adjustment assembly, by virtue of the threaded engagement of the first pivot bar 184 with the first adjustment bolt 181, serves to positively retain the support member in the desired position while the lock screws (166, 172, 174, 176) are tightened to rigidly retain the support member 140 in that position. Thus, this aspect of the present invention represents a vast improvement over prior antenna mounting brackets that lack means for positively retaining support member in a desired azimuth position, while the locking members are tightened.
To adjust the antenna's elevation, the lock nut 198 and the lock nut 210 are loosened. Thereafter, the second adjustment bolt 222 is rotated in the appropriate direction to cause the mast support member 190 to pivot in the desired direction about the second pivot axis J—J in a controlled manner. Those of ordinary skill in the art will appreciate that the second adjustment assembly, by virtue of the threaded engagement of the second pivot bar 240 with the second adjustment bolt 222, serves to positively retain the mast support member 190 in the desired position while the lock nuts (198, 210) are tightened to rigidly retain the mast support member 190 in that position. Thus, this aspect of the present invention represents a vast improvement over prior antenna mounting brackets that lack means for positively retaining the mast-supporting member in a desired elevational position, while the locking members are tightened.
The above-described mounting bracket embodiment is particularly useful for mounting and orienting an antenna along a plurality of axes. Those of ordinary skill in the art will appreciate that the mast support member 190 described above could be provided in a variety of other configurations that are adapted to attach various other objects to the mounting bracket. Those of ordinary skill in the art will further appreciate that for applications that require the mounting bracket to be exposed to the elements, the various fasteners employed in the mounting bracket may be fabricated from corrosion resistant material such as stainless steel or the like. Furthermore, the fasteners employed in the mounting bracket 100 may comprise the same size of screw or bolt (not necessarily the same length) such that a single wrench may be employed by the installer to mount the bracket and make all of the adjustments thereto. Also, if desired, to protect the mounting bracket 100 from the elements and establish a more aesthetically pleasing appearance, a shroud 400 made from a suitable material may be placed around the bracket. See FIG. 21. Shroud 400 may be fabricated from flexible plastic or rigid plastic and may be one or more parts that are fastened together around the mounting bracket 100 by appropriate fasteners, such as screws, etc.
In this embodiment, the reflector 30 is molded from plastic utilizing conventional molding techniques. However, reflector 30 may be fabricated from a variety of other suitable materials such as, for example, stamped metal such as aluminum, steel, etc. The reflector 30 depicted in
Turning now to
Also in this embodiment, a first digital level 350 which has a first digital display 352 is supported in the housing member 330 as shown in
This embodiment of the antenna-pointing device 300 also includes a skew meter 360. The skew meter 360 includes a second digital level 362 of the type described above that is mounted perpendicular to the first digital level 352 (i.e., its centerline will be within the plane defined by the centerline axis A—A and the reflector's major axis A″—A″ when the device 300 is attached to the reflector 30). See FIG. 27A. The output of the first digital level 350, which is designated as 365 (defining angle α) and the output of the second digital level 362, which is designated as 366 (defining angle β), are sent to a conventional microprocessor 367. A calibration input, generally designated as 368 and defining distance “d” between a reference point on the device 300 and the centerline A—A of the reflector 30 is also sent to the microprocessor 367. Those of ordinary skill in the art will appreciate that the calibration input permits the installer to calibrate the device 300 for each individual reflector 30. Utilizing standard trigonometry calculations, the microprocessor 367 calculates the skew angle θ of the reflector 30 and displays it on a digital skew meter display 369.
The mounting base 310 includes an attachment surface 312 that has a first pin 314 attached thereto that is sized to be inserted into the hole 82 in the first socket 80. A second pin 316 is attached to the mounting base 310 such that it is received in the second hole 86 in the second socket 84 when the first pin 314 is received in the hole 82 in the first socket 80. The centerlines of the first and second pins are located on a common axis G′—G′. See
To attach the mounting base 310 to the antenna reflector 30, the installer inserts the third pin 322 into the third hole 90 and applies a biasing force to the pointing device 300 until the first pin 314 may be inserted into the first hole 82 in first socket 80 and the second pin 316 may be inserted into the second hole 86 in the second socket 84. When pins (314, 316, and 322) have been inserted into their respective holes (82, 86, 90), the spring 329 applies a biasing force against the support member 310 that, in turn, biases the third pin 322 into frictional engagement with the inner surface of the third hole 90 in the third socket 88 to removably affix the pointing device 300 to the antenna reflector 30. When affixed to the antenna reflector 30 in that manner (see FIG. 28), the distance “d” between point 92′ and point 92 through which the centerline axis A—A of the antenna reflector 30 extends is input into the microprocessor 367 by a keypad or other standard input device to enable the microprocessor 367 to calculate and display the skew angle θ on the digital skew meter display 369. See FIG. 27A. In this embodiment, the digital compass 340 and the first and second digital levels 350 and 362, respectively are powered by a battery (not shown) supported in the housing 330. The battery may be rechargeable or comprise a replaceable battery or batteries. The housing 330 is provided with a battery access door 331 to permit the installation and replacement of batteries. However, it is conceivable that other compasses and digital levels that require alternating current may be employed.
An alternative method of attaching an embodiment of the antenna-pointing device 100′ of the present invention is depicted in
To attach the mounting base 310′ to the antenna reflector 30, the installer inserts the third pin 322′ into the third hole 90 and applies a biasing force to the pointing device 300′ until the first pin 314′ may be inserted into the first hole 82 in first socket 80 and the second pin 316′ may be inserted into the second hole 86 in the second socket 84. When pins (314′, 316′, and 322′) have been inserted into their respective holes (82, 86, 90), the installer pivots the actuation portion 337′ of the locking lever 333′ in the direction represented by arrow “Y” in
The antenna-pointing device 300 may be employed to align the antenna's centerline axis A—A with the satellite as follows. After the mounting member 110 has been mounted to a support structure, the antenna mast 15 is inserted into the mast-receiving socket 192 in the mast support member 190. Antenna mast 15 may be retained in the socket 192 by one or more retaining screws 193 that are threaded into engagement with the antenna mast 15. See FIG. 11. However, other fasteners and attachment methods may be employed for affixing the antenna mast 15 to the antenna mast support member 190. In this embodiment, the antenna 20 is connected to the mounting mast 15 by a rearwardly extending portion 44 of the support arm 40. A socket 46 is provided in the rearwardly extending portion 44 for receiving the other end of the antenna mast 15 therein. The mast 15 is retained in the socket 46 by locking screws 47. See
After the antenna 20 has been preliminarily mounted to the mounting bracket 100 as described above, the antenna-pointing device 300 is snapped onto the rear of the antenna reflector 30 in the above-described manner. Because the antenna-pointing device 300 is affixed to the rear of the reflector 30, the installer's hands are free to adjust the antenna 20 and mounting bracket 100.
Upon attachment of the antenna-pointing device 300 to the reflector 30, the digital azimuth display 342 will display the azimuth reading for the antenna's initial position. The installer then loosens the lock screws 166, 172, 174, 176. Thereafter, the first adjustment bolt 181 is rotated in the appropriate direction to cause the support member 140 to pivot in a desired direction about the first pivot axis G—G. Such rotation of the first adjustment bolt 181 causes the pivoting of the support member 140 (and the antenna 20) about the first pivot axis G—G in a controlled manner. The installer rotates the first adjustment member 181 until the azimuth display 342 displays the desired azimuth reading. Thereafter, the lock screws 166, 172, 174, 176 are screwed into lock the support member 140 in that position. Those of ordinary skill in the art will appreciate that the mounting bracket serves to retain the antenna 20 in the desired azimuth setting while the above-mentioned fasteners are locked.
To set the antenna's elevation, the installer observes the elevation reading displayed by the elevation display meter 352. Thereafter, the lock nut 198 and the lock nut 210 are loosened. The second adjustment bolt 222 is then rotated in the appropriate direction to cause the mast support member 190 (and the antenna 20) to pivot in the desired direction about the second pivot axis J—J in a controlled manner. After the antenna meter indicates that the antenna has been oriented at the desired elevation, the lock nuts (198, 210) are screwed into locking position. Those of ordinary skill in the art will appreciate that the second adjustment assembly, by virtue of the threaded engagement of the second pivot bar 240 with the second adjustment bolt 222, serves to positively retain the mast support member 190 in the desired position while the lock nuts (198, 210) are tightened to rigidly retain the mast support member 190 in that position.
In the antenna design depicted in
If the installer wishes to employ a set top box 60 to further optimize the antenna's alignment with the satellite 14, a coaxial cable 62 is attached to the feed/LNBF assembly 45 and the set top box 60. The antenna's position is further adjusted in the above-described manners while monitoring the graphical display on the television 48 and the audio signal emitted by the set top box.
Another embodiment of the antenna pointing apparatus 300 of the present invention employs a speaker 370 that is supported on housing 330 and has a radio receiver antenna 375. This embodiment further includes a conventional transmitter 372 that is equipped with a conventional microphone 377. Transmitter 372 may be powered by batteries (not shown). Speaker 370 and transmitter 372 may be constructed of radio components like those sold as infant monitoring devices by Tandy Corporation and others or similar devices may be successfully employed. Those speakers 370 that employ a magnet should be mounted within the housing such that the magnet does not interfere with the operation of the digital or analog compass that may also be supported within the housing 330. Appropriate shielding means could also be employed. To use the speaker 370 and transmitter 372, the user places the transmitter 372 adjacent to the television's audio speaker 49 such that it can receive and transmit the audio signals emitted during use of the set top box 60 to the speaker 370. The antenna-pointing device 300 is attached to the rear of the antenna reflector 30 in the above-described manner and further positioning adjustments are made to the antenna 20 until the emitted audio signal indicates that the optimum orientation has been achieved. Those of ordinary skill in the art will appreciate that most set top boxes emit a repeating tone at a frequency that increases as the satellite signal improves until the series of tones becomes a single tone. The antenna 20 is then retained in that position by locking the appropriate adjustment screws on the mounting bracket. Those of ordinary skill in the art will readily appreciate that such arrangement permits an individual installer to employ the set top box to achieve optimum positioning of the reflector without having to make several trips between the antenna and the television. To make the transmitter easy to locate and thus prevent it from becoming misplaced or lost during installation, it may be provided in a bright color, such a florescent orange, red, yellow, etc. In addition, to enable the installer to quickly identify which transmitter 372 corresponds to a particular antenna alignment device 300, the alignment device may be provided with a first bright color 301, such as, for example, fluorescent orange, red, yellow, etc. and the transmitter 372 may be provided in a second color 373 that is identical to the first color 301. See FIG. 24A.
The antenna alignment apparatuses of the present invention may comprise one or more of the following components: (i) digital compass, (ii) a first digital level, (iii) a second digital level, and/or (iv) a speaker. For example, as shown in
The housing 810 further has an attachment portion 840 for attaching the antenna-pointing device 800 to the rear surface 32 of the antenna reflector 30. More particularly and with reference to
To attach the attachment portion 840 to the antenna reflector 30, the installer inserts the third pin 852 into the third hole 90 and applies a biasing force to the pointing device 800 until the first pin 844 may be inserted into the first hole 82 in first socket 80 and the second pin 846 may be inserted into the second hole 86 in the second socket 84. When pins (844, 846 and 852) have been inserted into their respective holes (82, 86, 90), the spring 859 applies a biasing force against the movable support member 854 that, in turn, biases the third pin 852 into frictional engagement with the inner surface of the third hole 90 in the third socket 88 to removably affix the pointing device 800 to the antenna reflector 30. When affixed to the antenna reflector 30 in that manner (see FIG. 32), the point 92″ is superimposed over point 92 through which the centerline axis A—A of the antenna reflector 30 extends. The skilled artisan will further appreciate that other methods of attaching the antenna-pointing device 800 to the rear portion of the antenna reflector 30 may be employed without departing from the spirit and scope of the present invention.
The antenna-pointing device 800 may be employed to align the antenna's centerline axis A—A with the satellite as follows. After the antenna-mounting bracket 800 has been installed, the antenna 20 is affixed to the mounting bracket 100 in the above-described manner. After the antenna 20 has been preliminarily mounted to the mounting bracket 100, the antenna-pointing device 800 is snapped onto the rear of the antenna reflector 30 in the above-described manner. Because the antenna-pointing device 800 is affixed to the rear of the reflector 30, the installer's hands are free to adjust the antenna until it has been set at a desired azimuth and elevation. Upon attachment to the reflector, the compass 820 will display the azimuth reading for the antenna's initial position. The installer then adjusts the antenna's position until the compass 820 displays the desired azimuth reading. The antenna is then locked in that position. The installer then observes the elevation reading displayed by the level 830 and adjusts the position of the antenna until the level 830 displays the desired reading and the antenna 20 is locked in that position. It will be understood that the antenna-pointing device 800 may also be used with other antennas that are mounted utilizing conventional mounting brackets and support apparatuses. The order of antenna adjustments described herein is illustrative only. Those of ordinary skill in the art will appreciate that the installer could, for example, set the elevation first when orienting the antenna 20.
If the installer wishes to employ a set top box 60 to further optimize the antenna's alignment with the satellite 14, a coaxial cable 62 is attached to the feed/LNBF assembly 45 and the set top box 60. The antenna's position is further adjusted while monitoring the graphical display on the television 48 and the audio signal emitted by the set top box.
Thus, from the foregoing discussion, it is apparent that the present invention solves many of the problems encountered by prior antenna alignment devices and methods. In particular, the methods of the present invention are easy to employ and can be employed by one installer to quickly and accurately align an antenna with a satellite. Various methods of the present invention also include the use of a set top box to optimize the antenna's orientation without the need to make several trips between the antenna and the television to which the set top box is attached. Those of ordinary skill in the art will, of course, appreciate that various changes in the details which have been herein described and illustrated in order to explain the nature of the invention may be made by the skilled artisan within the principle and scope of the invention as expressed in the appended claims.
This application is a division of U.S. patent application Ser. No. 09/751,278 filed Dec. 29, 2000.
Number | Name | Date | Kind |
---|---|---|---|
110434 | Clarke | Dec 1870 | A |
780947 | Grabe | Jan 1905 | A |
1303249 | Brown | May 1919 | A |
1522751 | Sechier | Jan 1925 | A |
1935246 | Kirsch | Nov 1933 | A |
2463176 | Hogrefe | Mar 1949 | A |
2575917 | Johnson | Nov 1951 | A |
2611566 | Landis | Sep 1952 | A |
2614861 | Van Horn | Oct 1952 | A |
2667317 | Trebules | Jan 1954 | A |
2754156 | Elderkin | Jul 1956 | A |
3910561 | Fornells | Oct 1975 | A |
3941340 | Rankins | Mar 1976 | A |
4095230 | Salmond et al. | Jun 1978 | A |
4126865 | Longhurst et al. | Nov 1978 | A |
4237465 | Shibano et al. | Dec 1980 | A |
4258568 | Boetes et al. | Mar 1981 | A |
4495706 | Kaminski | Jan 1985 | A |
4626864 | Micklethwaite | Dec 1986 | A |
4691207 | Timineri | Sep 1987 | A |
4726259 | Idler | Feb 1988 | A |
4833932 | Rogers | May 1989 | A |
4990924 | McMullen et al. | Feb 1991 | A |
5065969 | McLean | Nov 1991 | A |
5088672 | Neuendorf et al. | Feb 1992 | A |
5138651 | Sudo | Aug 1992 | A |
5276972 | Staney | Jan 1994 | A |
5351060 | Bayne | Sep 1994 | A |
5376941 | Fukazawa et al. | Dec 1994 | A |
5448254 | Schneeman et al. | Sep 1995 | A |
5463403 | Walker et al. | Oct 1995 | A |
5469182 | Chaffee | Nov 1995 | A |
5473335 | Tines | Dec 1995 | A |
5561433 | Chaney et al. | Oct 1996 | A |
5589837 | Soleimani et al. | Dec 1996 | A |
5621418 | Maloney | Apr 1997 | A |
5646638 | Winegard et al. | Jul 1997 | A |
5647134 | Chou | Jul 1997 | A |
5657031 | Anderson et al. | Aug 1997 | A |
5664752 | Matthiessen et al. | Sep 1997 | A |
5734356 | Chang | Mar 1998 | A |
5760739 | Pauli | Jun 1998 | A |
5764186 | Yoo | Jun 1998 | A |
5829121 | Shoemaker et al. | Nov 1998 | A |
5870059 | Reynolds | Feb 1999 | A |
5884199 | Maki | Mar 1999 | A |
5894674 | Feldman | Apr 1999 | A |
5903237 | Crosby et al. | May 1999 | A |
5915020 | Tilford et al. | Jun 1999 | A |
5920291 | Bosley | Jul 1999 | A |
5923288 | Pedlow, Jr. | Jul 1999 | A |
5933123 | Kaul | Aug 1999 | A |
5940028 | Iwamura | Aug 1999 | A |
5945945 | Wagner et al. | Aug 1999 | A |
D413603 | Inoue | Sep 1999 | S |
5977922 | Hemmingsen, II | Nov 1999 | A |
5992809 | Sweere et al. | Nov 1999 | A |
5999139 | Benjamin et al. | Dec 1999 | A |
6008769 | Palmiter et al. | Dec 1999 | A |
6011511 | Chuong et al. | Jan 2000 | A |
6023247 | Rodeffer | Feb 2000 | A |
6031508 | Ishizuka et al. | Feb 2000 | A |
6037913 | Johnson | Mar 2000 | A |
6188372 | Jackson et al. | Feb 2001 | B1 |
6208314 | Bourquin | Mar 2001 | B1 |
6216266 | Eastman et al. | Apr 2001 | B1 |
6229480 | Shintani | May 2001 | B1 |
6262687 | Bai et al. | Jul 2001 | B1 |
6285338 | Bai et al. | Sep 2001 | B1 |
6331839 | Grenell | Dec 2001 | B1 |
D453151 | Weaver | Jan 2002 | S |
6337658 | Tong et al. | Jan 2002 | B1 |
D453330 | Weaver | Feb 2002 | S |
6480161 | Watson | Nov 2002 | B2 |
6484987 | Weaver | Nov 2002 | B2 |
6486851 | Weaver | Nov 2002 | B2 |
6507325 | Matz et al. | Jan 2003 | B2 |
6559806 | Watson | May 2003 | B1 |
6580391 | Kepley et al. | Jun 2003 | B1 |
6683581 | Matz et al. | Jan 2004 | B2 |
20020083573 | Matz et al. | Jul 2002 | A1 |
20020083574 | Matz et al. | Jul 2002 | A1 |
20020084941 | Matz et al. | Jul 2002 | A1 |
20020084946 | Matz et al. | Jul 2002 | A1 |
Number | Date | Country |
---|---|---|
1 014 481 | Jun 2000 | EP |
0024083 | Apr 2000 | WO |
Number | Date | Country | |
---|---|---|---|
Parent | 09751278 | Dec 2000 | US |
Child | 10302023 | US |