This invention relates to television advertising, and, more particularly, to techniques for advertising television networks, channels, and programs.
The practice of advertising television networks, channels, and programs has become widespread. For example, an advertisement for a network or channel may promote the network or channel generally or a particular line-up of television programs on that network or channel. Similarly, an advertisement for a television program may promote the program generally or a particular episode or particular episodes of that program.
Advertisements for television networks, channels, and programs have been delivered to television viewers in a variety of ways. For example, advertisements have been delivered by using standard television commercial time slots in television programs to present the advertisements to television viewers. The advertisements delivered in such standard television commercial time slots for television networks and channels have been delivered on both the same and different networks and channels from those being advertised. Similarly, the advertisements for television programs delivered in standard television commercial time slots have been delivered during both the same and different television programs from those being advertised.
As another example, barker television screens have also been used to present advertisements to television viewers over channels that are otherwise unused by television systems. The advertisements delivered on such barker television screens have been presented in a variety of formats including full motion video (including audio), still images, graphics, and text.
As yet another example, passive program guides that provide television program information to television viewers on dedicated television channels have been used to present advertisements. More recently, interactive television program guides have been developed that are similarly capable of delivering advertising for various types of programming. The advertisements delivered by such passive and interactive program guides have been presented in a variety of formats including full motion video (including audio), still images, graphics, and text.
A problem with television advertising is that in certain circumstances the advertisement for a network, channel, or program may be wasted if the network, channel, or program is unavailable to or undesired by a television viewer. For example, an advertisement presented to a viewer of a news channel for a comedy channel may be wasted if the comedy channel is unavailable to the viewer. As another example, an advertisement for an adult television channel may be wasted when presented to a television viewer who has opted to block out the programming available on the adult television channel in the viewer's home.
As yet another example, an advertisement for a program on a network may be wasted if the local affiliate for that network has chosen not to present the advertised program. As still another example, where a channel on a television system is split by the system operator between a first programming provider during one portion of the day and a second programming provider during another portion of the day, an advertisement for a program provided by the first programming provider may be wasted if the program is to be aired during the second programming provider's portion of the day. As a further example, where a channel produced by a programming provider is affiliated with a first network during one portion of the day and a second network during another portion of the day, an advertisement for a program on the first network may be wasted if the program is to be aired during the second network's portion of the day.
Rather than wasting an advertising opportunity by presenting an advertisement for a network, channel, or program that is unavailable to or undesired by a television viewer, it may be preferred to present an advertisement for a network, channel, or program that is available to or desired by a television viewer, or some other advertisement.
A problem associated with providing television advertising in program guides is that in order to present an advertisement for a network or a program to be aired on a network, a separate copy of the advertisement for each of the affiliates of the network must be broadcast to the television systems in which the advertisement is to be aired. This repetitive broadcasting must be performed so that each television system receives a copy of the advertisement that is associated with the affiliate of the advertised network carried by the television system. Because the size of typical advertisements that contain graphics may be on the order of several kilobytes, however, broadcasting a separate copy of the advertisement for each affiliate of large networks may be inefficient. For example, for a program guide advertisement having a size of six kilobytes that is to be advertised in association with a network having three hundred affiliates, the broadcasting of that advertisement alone would require the broadcasting of one thousand, eight hundred kilobytes of data.
It is therefore an object of the present invention to provide systems and methods for advertising television networks, channels, and programs that prevent advertisements from being displayed for networks, channels, and programs that are unavailable to television viewers.
It is also an object of the invention to provide systems and methods for advertising television networks, channels, and programs that prevent advertisements from being displayed for networks, channels, and programs that are undesired by television viewers.
It is a further object of the invention to provide systems and methods for advertising television networks, channels, and programs that prevent advertisements of network programs from being displayed when those programs are not aired by the local affiliates of the corresponding networks.
It is a yet further object of the invention to provide systems and methods for advertising television networks, channels, and programs that prevent advertisements of programs from being displayed when those programs are to be aired during a portion of the day when the program provider or network associated with the program is not available to television viewers.
It is a still further object of the invention to provide systems and methods for advertising television networks, channels, and programs that do not require the repetitive broadcasting, for each affiliate of a network, of advertisements for that network, or a program to be aired on that network, to those television systems carrying the advertisements.
These and other objects of the invention are accomplished in accordance with the principles of the invention by providing systems and methods that control the presentation of advertisements to television viewers based upon the networks, channels, and programs which are available to the viewers and based upon whether those networks, channels, and programs are indicated by the viewers to be undesirable. Additionally, in preferred embodiments of these systems and methods, only a single broadcast of each advertisement that is associated with a network (or a program on a network) and a network identifier is performed for all television systems. Once received, the network identifier is used to determine whether the advertisement is to be presented to the viewers of each television system.
The systems and methods of the present invention preferably control the presentation of advertisements by determining at television viewer equipment whether the advertisements are associated with television networks, channels, or programs that may be unavailable to the television viewer or that may be undesirable to the television viewer. Once this determination has been made, the television viewer equipment then preferably presents the advertisements, or selects and presents suitable alternative advertisements. Advertisements may be presented using any suitable technique such as by presenting full motion video (including audio), still images, graphics, and text, during standard television commercial time slots, on barker screens, in passive or interactive program guide advertisements, or using any other suitable advertising method.
The television viewer equipment of the systems and methods of the present invention is preferably a television set-top box coupled to a television, although videocassette recorders (VCRs), advanced television receivers, personal computer televisions (PC/TVS), and any other suitable equipment that has sufficient hardware to perform the same processing and display functions provided by a television set-top box and television may also be used.
The television viewer equipment preferably receives transmissions of data such as advertisements and advertisement control information, program guide information, and channel map information from a main facility, a television distribution facility, or network nodes within a television system. At the television viewer equipment, this data may be used by an interactive television program guide or other suitable application, possibly with additional data stored in the television viewer equipment (such as channel block-out information), to determine whether an advertisement is to be presented to the television viewer.
For example, the program guide or other application may determine that an advertisement that was intended to be presented on the channel “CNN” for a program to be aired on the channel “WTBS” is not to be presented if “WTBS” is not available in the television system, even though “CNN” is available. In this example, it may be determined that the advertisement is associated with “WTBS” from advertisement control information that accompanies the advertisement, or by searching for the program being advertised in program guide information stored in the television viewer equipment and retrieving the corresponding channel information. The determination that “WTBS” is unavailable to the viewer may be made by consulting channel map information stored in the television viewer equipment or by referring to channel information in program guide information stored in the television viewer equipment. Finally, once the determination of whether the advertisement is to be presented has been made, the advertisement can be presented to the television viewer or a suitable alternative advertisement can be identified and presented.
In order to avoid redundantly broadcasting an advertisement that is associated with a network (or a program to be aired on a network) to each television system carrying the advertisement for each affiliate of that network, the advertisement and a network identifier are preferably broadcast only once to all television viewer equipment in the television systems. The advertisement and the network identifier are received at the television viewer equipment. Using the network identifier and channel map or program guide information located in the television viewer equipment, an interactive program guide or other application running in the television viewer equipment determines whether a local affiliate for that network is available and has not been designated as undesirable by a television viewer. If the local affiliate is available and has not been designated as undesirable, the advertisement is presented to the television viewer. If a local affiliate for that network is not available or the only local affiliate available for that network has been designated as undesirable by the television viewer, a suitable alternative advertisement is identified and presented to the television viewer.
Further features of the invention, its nature and various advantages will be more apparent from the accompanying drawings and the following detailed description of the preferred embodiments.
An illustrative system 100 for controlling the presentation of advertisements associated with television networks, channels, and programs in accordance with the present invention is shown in
Main facility 102 provides central storage and control of program guide data, advertising data, and channel map data in system 100. In order to do so, main facility 102 preferably contains, among other things, an advertisement order entry computer 111, a program guide database 112, an advertising database 114, and a channel map database 116. Advertisement order entry computer 111 preferably enables and controls the placing of orders for the presentation of advertisements in system 100. When an order is placed via computer 111, computer 111 may accept advertisement control information identifying which advertisement is to be presented, the network, channel, or program with which the advertisement is associated, the date, time, and channel on which the advertisement is to be presented, etc. Once this information has been entered, computer 111 may package and store the advertisement and the advertisement control information in advertising database 114 for later transmission. Computer 111 may also package and store a substitute advertisement (that may be a generic advertisement having no correlation to the primary advertisement and that may be presented instead of the primary advertisement) with the advertisement and the advertisement control information. Computer 111 may be implemented using a personal computer, a mainframe computer, a network of computers, or any other suitable computer capable of receiving and processing data, and communicating with advertising database 114.
Program guide database 112 preferably includes television program guide information such as program times, channels, titles, descriptions, pricing information for individual pay programs and subscription channels, time windows for ordering pay programs and channels, telephone numbers for placing orders for pay programs and channels, etc. Advertising database 114 preferably includes advertisements in forms such as text, graphics, video, and audio data, advertisement control information such as presentation date, time (including time ranges and correction data), and length information, presentation channel and network information, and information such as the names, categories, ratings, descriptions, and series for the networks, channels, and programs being advertised. Channel map database 116 preferably includes channel map information relating the channels, networks, and sources of programming that can be received in system 100 and may also indicate what channels are available to viewers. For example, the channel map information may indicate that channel number “2” is related to the Central Broadcasting System (“CBS”) network and is provided by affiliate “WCBS” in New York City. The channel map information may further include day and time information indicating the days and times at which channels change source or network associations. Although databases 112, 114, and 116 are each illustrated in
Information from databases 112, 114, and 116 may be transmitted to each television distribution facility 104 by way of communications link 108. Link 108 may be a satellite link, a telephone network link, a cable or fiber optic link, a microwave link, a combination of such links, or any other suitable communications link. The information transmitted by way of communications link 108 may be transmitted using any suitable transmission technique.
Each television distribution facility 104 is a facility, such as a cable system headend, a broadcast distribution facility, or a satellite television distribution facility, for distributing television signals and data to television viewer equipment 106. As illustrated, each television distribution facility 104 may include, among other things, an advertisement order entry computer 117, a program guide database 118, an advertising database 120, and a channel map database 122. Advertisement order entry computer 117 may be substantially the same as advertisement order entry computer 111 in main facility 102. Each of databases 118, 120, and 122 may be substantially the same as databases 112, 114, and 116 in main facility 102, may provide local mirrors of the data in those databases and may be omitted from television distribution facility 104 or located in separate television distribution facilities 104.
If desired, some or all of the program guide information, advertisements and advertisement control information (including that received from advertising order entry computers 111 and 117), and channel map information in databases 112, 114, 116, 118, 120, and 122 may be provided using data sources at facilities other than main facility 102 and television distribution facility 104. For example, program guide information for all or a portion of system 100 may be maintained by a program guide information provider that is separate from main facility 102 and television distribution facility 104. Similarly, advertisements and advertisement control information may be generated by an advertising facility that is separate from main facility 102 and television distribution facility 104. Also, the channel map information in databases 112, 114, 116, 118, 120, and 122 may be generated and maintained locally at television distribution facility 104.
Program guide information, advertisements, advertisement control information, and channel map information is distributed from television distribution facility 104 to television viewer equipment 106 by way of communications paths 110. Communications paths 110 may be satellite links, telephone network links, cable or fiber optic links, microwave or other free-space links, combinations of such links, or any other suitable communications paths. Any suitable technique or combination of techniques may be used to transmit program guide information, advertisements, advertisement control information, and channel map information over communications paths 110 including analog transmission, digital transmission, and mixed analog and digital transmissions.
Preferably, communications paths 110 have sufficient bandwidth to allow television distribution facility 104 to distribute television programming such as standard broadcast television, pay programming, advertising and promotional videos, and other video information to television viewer equipment 106. Multiple television and audio channels (analog, digital, or both analog and digital) may be provided by communications paths 110. Program guide information, advertisements, advertisement control information, and channel map information may be transmitted through communications paths 110 using out-of-band channels, using in-band digital channels, using the vertical blanking interval, or using any other suitable technique. If desired, program guide information, advertisements, advertisement control information, and channel map information may be distributed by one or more distribution facilities that are similar to, but separate from, main facility 102 and television distribution facility 104 using communications paths that are the same or separate from communications paths 110.
The information stored and transmitted by databases 112, 114, 116, 118, 120, and 122 preferably ultimately reaches television viewer equipment 106 where the information is processed and displayed (e.g., by an interactive program guide application or by another suitable application) as necessary. As shown, each piece of television viewer equipment 106 may include a set-top box 124, a videocassette recorder 126, and a television 128. Television viewer equipment 106 may additionally or alternatively include advanced television receivers, personal computer televisions (PC/TVS), and any other suitable equipment that has sufficient hardware to perform the same processing and display functions provided by a set-top box and television. Preferably, the information from databases 112, 114, 116, 118, 120, and 122 is processed and transformed into a displayable signal by suitable hardware and software incorporated into set-top box 124, although this hardware could alternatively be incorporated into videocassette recorder 126 or television 128.
The distribution of data from databases 112, 114, 116, 118, 120, and 122 may be accomplished using one-way transmission from some or all of the databases to television viewer equipment 106. For example, data may be distributed to television viewer equipment 106 continually or periodically from some or all of databases 112, 114, 116, 118, 120, and 122. The distribution of data may also be accomplished using two-way transmissions. With this approach, television viewer equipment 106 requests the needed data from the databases, and, in response, the corresponding database transmits back the requested data.
As shown in
A process 300 for enabling and controlling the placing of orders for advertisements that may be implemented on advertising order entry computers 111 (
At step 402, process 400 begins by determining whether program guide information is ready to be transmitted from any of databases 112, 118, or 204. If it is determined at step 402 that television program guide information is ready to be transmitted, process 400 then retrieves and transmits the appropriate television program guide information at step 404. Once the information has been transmitted at step 404 or if it is determined at step 402 that no television program guide information is ready to be transmitted, process 400 determines whether channel map information is ready to be transmitted from any of databases 116, 122, or 208. If it is determined at step 406 that channel map information is ready to be transmitted, process 400 retrieves and transmits the appropriate channel map information at step 408. Once the information has been transmitted at step 408 or if it is determined at step 406 that no channel map information is ready to be transmitted, process 400 determines at step 410 whether advertising information is ready to be transmitted from any of databases 114, 120, or 206. Advertising information may include an advertisement and advertisement control information (and a substitute advertisement, if desired). If it is determined at step 410 that advertising information is ready to be transmitted, process 400 then retrieves and transmits the appropriate advertising information at step 412. Once the information has been transmitted at step 412 or if it is determined at step 410 that no advertising information is ready to be transmitted, process 400 loops back to and repeats step 402. If desired, the steps of
At step 502, process 500 begins by determining whether program guide information is waiting to be received from any of databases 112, 118, or 204. If it is determined at step 502 that program guide information is ready to be received, process 500 then receives and stores in memory the program guide information at step 504. When the program guide information is received at a television distribution facility 104 or a network node 202, instead of being stored in memory, the information may be stored in program guide database 118 or 204, respectively. Once the information has been stored at step 504 or if it is determined at step 502 that no program guide information is waiting to be received, process 500 determines at step 506 whether channel map information is waiting to be received from any of databases 116, 122, or 208. If it is determined at step 506 that channel map information is waiting to be received, process 500 then receives and stores in memory the channel map information at step 508. When the channel map information is received at a television distribution facility 104 or a network node 202, instead of being stored in memory, the information may be stored in channel map database 122 or 208, respectively.
Once the channel map information has been received at step 508 or if it is determined at step 506 that no channel map information is waiting to be received, process 500 determines at step 510 whether advertising information is waiting to be received from any of databases 114, 120, or 206. Advertising information may include an advertisement and advertisement control information (and a substitute advertisement, if desired). If it is determined at step 510 that advertising information is ready to be received, process 500 then receives and processes the advertising information at step 512. The receiving and processing of advertising information is further illustrated in
If it is determined in step 604 that the received advertisement is not associated with a television network or in step 606 that the network is not viewable by the audience, it is then determined at step 612 using the advertisement control information whether the received advertisement is associated with a television channel. If it is determined at step 612 that the advertisement is associated with a television channel, it is determined at step 614 whether the channel is viewable by the audience for the advertisement. An example of how step 614 may be performed is discussed below in connection with the illustration of
If it is determined in step 612 that the received advertisement is not associated with a television channel or in step 614 that the channel is not viewable by the audience, it is then determined at step 616 using the advertisement control information whether the received advertisement is associated with a television program. If it is determined at step 616 that the advertisement is associated with a television program, it is then determined at step 618 whether the program is viewable by the audience for the advertisement. An example of how step 618 may be performed is discussed below in connection with the illustration of
Finally, if at step 616 it is determined that the advertisement is not associated with a television program, then at step 620 it is once again determined if the advertisement is associated with a television network or channel. If it is determined at step 620 that the advertisement is associated with a television network or channel, then a substitute advertisement is selected and displayed at step 610, and step 512 is completed. Otherwise, if it is determined at step 620 that the advertisement is not associated with a television network or channel, then the advertisement is displayed or stored at step 608, and step 512 is completed.
Although a particular order of steps is illustrated in
An example of a process by which it may be determined at step 606 of
Otherwise, if it is determined in step 704 that the network is available for viewing, it is determined at step 706 whether the network has been blocked out. A network may be blocked out by a parent wishing to screen his or her children from adult programming or by an automatic feature of a censorship system such as the “V” chip. A network may be blocked out because the network or channel for the network has been blocked or because a program on at the time or time range of the advertisement has been blocked. For blocking of networks and channels, the determination of whether a network has been blocked out may be “no” for every network listed in the channel map (e.g., for channel maps like that shown in
If it is determined at step 702 that the network is not listed in the channel map, it is then determined at step 708 whether the network is listed in program guide information in the device performing the process of step 606. If program guide information is not available to the process of step 606, step 708, and steps 710 and 712 which follow step 708, may be skipped and step 606 may then complete and return a default indication either that the network is viewable or not viewable, as desired. The determination of whether the network is listed in the program guide information may be made by searching the program guide information and returning a “yes” indication if the network is found in the program guide information and a “no” indication if the network is not found in the program guide information. If it is determined at step 708 that the network is not listed in the program guide information, step 606 is completed and returns an indication that the network is not viewable. Otherwise, if it is determined at step 708 that the network is listed in the program guide information, it is determined at step 710 whether the network is available for viewing at the time or time range associated with the advertisement. This determination may be made by checking flags associated with the network in the program guide information. If it is determined at step 710 that the network is not available for viewing, step 606 is completed and returns an indication that the network is not viewable. Otherwise, if it is determined at step 710 that the network is available for viewing, it is determined at step 712 whether the network has been blocked out. This determination may be made by checking flags associated with the network in the program guide information, channel map, or a blocked-program list. If it is determined at step 712 that the network is blocked out, step 606 is completed and returns an indication that the network is not viewable. Otherwise, if it is determined at step 712 that the network is not blocked out, step 606 is completed and returns an indication that the network is viewable.
An example of a process by which it may be determined at step 614 of
Otherwise, if it is determined in step 804 that the channel is available for viewing, it is then determined at step 806 whether the channel has been blocked out. A channel may be blocked out by a parent wishing to screen his or her children from adult programming or by an automatic feature of a censorship system such as the “V” chip. A channel may be blocked out because the channel or the channel's network has been blocked or because a program on at the time or time range of the advertisement has been blocked. For blocking of networks and channels, the determination of whether a channel has been blocked out may be “no” for every channel listed in the channel map or for only those channels listed in the channel map that are indicated as not being blocked out (e.g., for channel maps like that shown in
If it is determined at step 802 that the channel is not listed in the channel map, it is then determined at step 808 whether the channel is listed in program guide information in television viewer equipment 106 performing the process of step 614. If program guide information is not available to the process of step 614, step 808, and steps 810 and 812 which follow step 808, may be skipped and step 614 may then complete and return a default indication either that the channel is viewable or not viewable, as desired. The determination of whether the channel is listed in program guide information may be made be searching the program guide information and returning a “yes” indication if the channel is found in the program guide information and a “no” indication if the channel is not found in the program guide information. If it is determined at step 808 that the channel is not listed in the program guide information, step 614 is completed and returns an indication that the channel is not viewable. Otherwise, if it is determined at step 808 that the channel is listed in the program guide information, it is determined at step 810 whether the channel is available for viewing at the time or time range associated with the advertisement. This determination may be made by checking flags associated with the channel in the program guide information. If it is determined at step 810 that the channel is not available for viewing, step 614 is completed and returns an indication that the channel is not viewable. Otherwise, if it is determined at step 810 that the channel is available for viewing, it is determined at step 812 whether the channel has been blocked out. This determination may be made by checking flags associated with the channel in the program guide information, channel map, or a blocked program list. If it is determined at step 812 that the channel is blocked out, step 614 is completed and returns an indication that the channel is not viewable. Otherwise, if it is determined at step 812 that the channel is not blocked out, step 614 is completed and returns an indication that the channel is viewable.
An example of a process by which step 618 of
If it is determined in step 902 that information for the program should not be in the program guide information, step 618 is completed and returns an indication that the program is viewable. Otherwise, if it is determined in step 902 that information for the program should be in the program guide information, it is then determined at step 904 whether information for this program actually is in the program guide information. This determination may be made by searching through the program guide information to determine if information corresponding to the program is present. If it is determined at step 904 that information for the program is not present, step 618 completes and returns an indication that the program in not viewable. Otherwise, if it is determined at step 904 that information for the program is present, it is then determined at step 906 whether this program is on an available channel at the time or time range associated with the advertisement. This determination may be made by first determining from the program guide information the channel on which the program is to air, and then by checking flags associated with that channel in the program guide information. If it is determined at step 906 that the program is not on an available channel, step 618 is completed and returns an indication that the program is not viewable. Otherwise, if it is determined at step 906 that the program is on an available channel, it is determined at step 908 whether the channel has been blocked out. A program may be blocked out because the channel or channel's network on which it is to be aired has been blocked or because the program has been blocked. This determination may be made by checking flags associated with the channel in the program guide information, the channel map, or a blocked-program list. If it is determined at step 908 that the channel has been blocked out, step 618 is completed and returns an indication that the program is not viewable. Otherwise, if it is determined at step 908 that the channel has not been blocked out, step 618 is completed and returns an indication that the program is viewable.
In the source ID column 1004, a source identification number is listed for each source of programming that may be received using television viewer equipment 106. The number assigned to each source of programming listed in source ID column 1004 may be any number, is preferably unique for each source of programming, and preferably enables the device using channel map 1000 to receive the programming provided by the source corresponding to that number.
In the available column 1006, a boolean flag is listed for each source of programming. Each flag may indicate whether a particular viewer is capable of receiving the programming from the corresponding source. This capability of the viewer may be based upon whether the viewer has paid for the programming (if desired; however, it is preferred to display advertisements regardless of whether programs have been paid for by the viewer), whether the programming is offered in the viewer's area, whether the programming is blacked out in the viewer's area (e.g., as is frequently done with sporting events), etc.
In the blocked out column 1008, a boolean flag is listed for each source of programming. Each flag may indicate whether a particular viewer has indicated that a source of programming is undesirable, and therefore should not be viewable, or an automatic censoring system such as the “V” chip has designated the source of programming as to be censored. Even though a source of programming may be blocked out, advertisements for that programming are preferably presented to induce the viewers to view the programming. However, the advertisements may be blocked also, if desired.
In the start time column 1010 and the end time column 1012 are start and end times for the time periods during which each channel number is associated with a particular source identification number. For example, channel number 6 is associated with source identification number 1050 from 12 a.m. (0000) through 12 p.m. (1200) and with source identification number 1075 from 12 p.m. (1200) through 12 a.m. (2400).
As shown in
As shown in
Although, the channel maps of
As mentioned above, the displaying of advertisements for television networks, channels, and programs in the present invention may be accomplished by presenting full motion video, still images, graphics, text, and audio during standard commercial television time slots, on barker television screens, in passive and interactive television program guides, using any other suitable techniques, or using a combination of these or other suitable techniques, if desired.
An example of a “grid” interactive program guide display screen 1600 incorporating an advertisement 1604 is illustrated in
An example of a “navigator” interactive program guide display screen 1700 incorporating advertisements is illustrated in
An example of such a interactive program guide display screen is illustrated in
Other examples of presenting advertisements in interactive television program guides are discussed in Knudson et al. U.S. patent application Ser. No. 09/034,939, filed Mar. 4, 1998, Knudson et al. U.S. patent application Ser. No. 09/070,604, filed Apr. 30, 1998, Knudson et al. U.S. patent application Ser. No. 09/070,555, filed Apr. 30, 1998, and Boylan, III et al. U.S. patent application Ser. No. 09/070,700, filed Apr. 30, 1998, which are hereby incorporated by reference herein in their entireties.
The foregoing is merely illustrative of the principles of this invention and various modifications can be made by those skilled in the art without departing from the scope and spirit of the invention.
This application is a continuation of U.S. patent application Ser. No. 12/400,649, filed Mar. 9, 2009, which is a continuation of U.S. patent application Ser. No. 10/783,150, filed Feb. 19, 2004, now U.S. Pat. No. 7,503,055, issued Mar. 10, 2009, which is a continuation of U.S. patent application Ser. No. 09/217,100, filed Dec. 16, 1998, now U.S. Pat. No. 6,742,183, issued May 25, 2004, which claims the benefit of U.S. Provisional Patent Application No. 60/085,608, filed May 15, 1998, each of which are hereby incorporated by reference herein in their entireties.
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20120304220 A1 | Nov 2012 | US |
Number | Date | Country | |
---|---|---|---|
60085608 | May 1998 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 12400649 | Mar 2009 | US |
Child | 13492622 | US | |
Parent | 10783150 | Feb 2004 | US |
Child | 12400649 | US | |
Parent | 09217100 | Dec 1998 | US |
Child | 10783150 | US |