The present application claims priority from Japanese application JP2005-331019 filed on Nov. 16, 2005, the content of which is hereby incorporated by reference into this application.
The present invention relates to a remote control device.
Television sets with a large-size display have come into widespread use in recent years. Such a large-size television is placed in a living room or dining room and has become an optimal information display device for family members to watch TV programs and movies. Like the large-size televisions, recorders with a large-capacity hard disk drive (hereinafter referred to as HDD) are also in wide use. With these devices, it has now become possible to record television programs for long hours. Not only television programs but image files shot by digital cameras, video files recorded by digital video cameras and music files can also be stored, and these media files can be displayed on the large-size TV. Further, personal computers (PC) have come to incorporate a television tuner and therefore can display and record television programs. If there are two or more PCs in home, they can be connected by a wired or wireless network so that the media files can be transferred or shared among the PCs and viewed in any PC.
Standards are being prepared and made public for data transmission among electric appliances including televisions, PCs and mobile devices such as cell phones, and software and hardware conforming to such standards are becoming available. These allow devices of different manufacturers to be connected easily.
With various devices in the home networked, it is possible to view or listen to content such as videos, still images and music stored in HDDs of other devices from any desired device in the home. This is convenient. That is, one can make a connection not only between a PC and a PC but also between a PC and a television or between a PC and a HDD recorder and view on a large-size television in a living room a TV program or video file stored in the PC placed in another room.
However, if various devices are networked, the number of devices to be operated by the user also increases. Each device requires a dedicated remote controller. The shapes and specifications of these remote controllers differ among different devices and manufacturers. Further, different devices have different graphical user interfaces (GUIs) for remote controllers. Therefore, the user is required to use multiple remote controllers for the devices he or she wishes to operate. Different remotes and GUIs have different operation feels and thus using these remotes is very cumbersome. Since there are as many dedicated remotes as there are devices to be operated, they may be scattered around in the home and lost, which is not desirable for the user.
One of conceivable methods to solve this problem is to operate two or more devices with a single remote. This uses an inclination detection sensor to determine a direction of the remote and operates different devices according to the detected direction.
This method, however, has a drawback. Consider a case where the user wishes to move a cursor up, down, left and right on a screen. If the direction in which the remote is held changes, the vertical direction of the remote no longer matches the vertical direction on the screen. So, the operator must be conscious of the direction of the remote at all times when operating on the screen. For example, when the remote is turned 90 degrees to the right for operation, the “up” key among the direction keys on the remote points to the right for the operator, the “right” key points “down” for the operator, the “down” key points to the left for the operator, and the “left” key points “up” for the operator. So, the directions on the screen do not match those on the remote. If the operator wants to move a cursor up, he is required to press the “up” key that points to the right. That is, when the direction in which the remote is held is changed and if the cursor on the GUI of the target device is to be moved up, down, left and right, the operator needs to be conscious of the direction of the remote and figure out which key match the intended direction on the screen.
The present invention is accomplished to solve the above-described problem and it is an object of this invention to provide a method for operating a plurality of GUIs with the same remote controller. More specifically, a method is provided which can operate different devices by changing the direction in which the remote control device is held with respect to the target device. It is also an object of this invention to provide a method which allows an operator to perform basic operations, such as “up”, “down”, “left” and “right” movement of a cursor, independently of GUI, without having to be conscious of the direction of the remote control device even when the direction in which the remote control device is held is changed.
To achieve the above objective, this invention provides a remote control device which comprises a plurality of LEDs mounted on a body of the remote control device and a means for simultaneously transmitting different signals from these LEDs when a direction button is operated. A signal receiving unit of a target device to be operated, such as a television, receives a signal from only one of the LEDs as a valid signal. If the LEDs are matched to different directions of the remote control device, the television receives a different signal according to the direction in which the remote control device is held. That is, if the same direction button, one of “up”, “down”, “left” and “right” direction buttons, is pressed, a different signal is transmitted depending on how the remote control device is held. This allows for the cursor movement on the GUI without having to consider the direction in which the remote control device is held.
Further, this invention is characterized by an LED provided to the back of the remote control device. If the operator holds the remote control device vertically inclined with respect to the receiving unit of the television, the LED on the back squarely faces the television, allowing for GUI operations.
Further, this invention is characterized by a means, such as a tilt sensor, provided in the remote control device to detect an inclination. When the remote control device is held vertical with respect to a television screen, this means can determine which side of the remote control device faces up. This in turn makes it possible to dynamically change the signal transmitted from the LED at the back of the remote control device according to an input value from the tilt sensor. Therefore, if the remote control device is held vertical with respect to the television, it transmits a different signal according to whether the device is held lengthwise or sideways, allowing for “up”, “down”, “left” or “right” cursor movement on GUI without having to consider the direction in which the remote control device is held.
Further, this invention is characterized by a beacon receiver provided on the remote control device. Two or more of the beacon receivers are mounted on the remote control device, for example, by the side of an LED arranged on each side of the remote control device. With this arrangement, it is possible to transmit a signal from only the LED close to the beacon receiver that has first received the beacon from the television and not to produce a signal from other LEDs. Therefore, the direction in which the remote control device is held can be matched to a signal with high precision even when the remote control device is held at an angle with respect to the television.
With this invention, different target devices can be operated with a single remote control device by holding it in proper directions.
Further, the “up”, “down”, “left” and “right” directions on the remote control device can be matched to the “up”, “down”, “left” and “right” directions on the GUI, without requiring the operator to be conscious of the direction in which the remote control device is held.
Further, not only when the remote control device is held horizontal with respect to the target device to be operated but also when it is held vertical with respect to the television, different signals can be transmitted from the remote control device when it is held in different directions.
Further, by installing a beacon transmitter on the target device to be operated, such as television, and beacon receivers on the remote control device, it is possible to precisely determine the direction in which the remote control device is held and to transmit the corresponding signal.
This invention provides a method of improving an operability when a plurality of networked devices are operated with one and the same remote control device.
Other objects, features and advantages of the invention will become apparent from the following description of the embodiments of the invention taken in conjunction with the accompanying drawings.
Now, embodiments of this invention will be described by referring to the accompanying drawings. Here, although a television is taken up as an example of the device to be operated, other devices may be used as long as they use a remote controller as an input device and takes directions, such as “up”, “down”, “left” and “right”, as input information. Here, we will describe an example case in which a cursor is moved up, down, left and right on a GUI displayed on a TV screen by a remote controller or a remote.
In the example of
In the figure, depressing the up, down, left and right buttons on the remote causes all the LEDs to simultaneously transmit signals which are different from one another. For example, the LED 103 on the upper side of the remote transmits a signal representing “up” when the button 1 is pressed, a signal representing “right” when the button 2 is pressed, a signal representing “down” when the button 3 is pressed, and a signal representing “left” when the button 4 is pressed. The LED 104 on the left side of the remote transmits a signal representing “right” when the button 1 is pressed, a signal representing “down” when the button 2 is pressed, a signal representing “left” when the button 3 is pressed, and a signal representing “up” when the button 4 is pressed.
As shown in
As explained in
With the method of this invention explained in
If the remote is held sideways as shown in
Considering these, it is preferred that the angle (beam width) of signal transmission 213θ2 be set narrower than 212θ1 so that, when the remote is held as shown in
As explained in
The television has one receiver 305. As explained in
The signals transmitted from the sending modules may include information representing directions already transformed as explained in
We have explained about the method that allows the operator to move the cursor up, down, left or right on GUI without having to be conscious of the direction in which the remote is held (i.e., whether the remote is disposed lengthwise or sideways). However, the remote is not always held horizontally and often held tilted at an angle (beam width) close to a vertical direction. In such a case, the directions in which the signals are transmitted from the LEDs on the sides of the remote are not toward the television, so the signals are not received by the receiver of the television.
As explained in connection with
Now, we will explain about a method which, when the remote is held vertical, allows the operator to move a cursor on the television up, down, left and right with the same normal operation procedure without having to be conscious of the direction of the remote, i.e., whether the remote is held lengthwise or sideways.
Which part of the remote points “up” can be determined by the tilt sensor in the remote. The signal transmitted from the LED at the back is switched between a signal representing “up” and a signal representing “right” even when the same button 1 (106) is pressed, depending on whether the upper side or the left side of the remote is found to be situated at the top of the remote. This arrangement enables the remote to transmit two different signals, one transmitted when the remote is held longitudinal and one transmitted when the remote is held sideways, allowing the operator to move the GUI cursor up, down, left and right on the television screen without having to be conscious of the direction of the remote even if the remote is held vertical.
First, the sensor such as a tilt sensor in the remote to detect an inclination sends a signal representing how much the body of the remote tilts against the ground surface to the CPU of the remote which then calculates the “up” direction of the remote at a step 601. As a result, which side of the remote faces “up” can be determined. In this example, a step 602 that checks which of the upper side and the left side of the remote faces up may instead check whether the right side or the lower side of the remote faces up.
If the decision finds that the upper side of the remote faces up, the LED at the back of the remote transmits a signal 1 (step 603). The signal 1 transmitted represents “up” when the button 1 is pressed, “right” when the button 2 is pressed, “down” when the button 3 is pressed, and “left” when the button 4 is pressed.
If the decision finds that the left side of the remote faces up, the LED at the back of the remote transmits a signal 2 (step 604). The signal 2 transmitted represents “right” when the button 1 is pressed, “down” when the button 2 is pressed, “left” when the button 3 is pressed, and “up” when the button 4 is pressed.
In the two cases where the remote is held horizontal and where it is held vertical, the method has been explained which allows the GUI cursor on the television screen to be moved up, down, left and right with the same normal operation procedure regardless of whether the remote is held lengthwise or sideways.
Where the remote is held horizontal, not only may each side of the remote be held to perpendicularly face the television, it may also be held at an angle with respect to the television. In such a case, with the method described so far, which side of the remote squarely faces the television cannot be determined precisely, giving rise to a possibility of a signal different from the desired one being transmitted.
If the remote is held at an angle with respect to the television, a side of the remote where its associated receiver has first received the beacon signal from the television is determined to face the television. The signal transmission from other LEDs than the one attached to that side is stopped so that the television receives only the signal transmitted from the LED at the side determined to face the television.
As a result, the receiver 702 of the television receives a signal representing “right” when a direction key “1” on the remote is pressed, a signal representing “down” when a direction key “2” is pressed, a signal representing “left” when a direction key “3” is pressed, and a signal representing “up” when a direction key “4” is pressed.
The remote receives the beacon from the television by the receivers installed at its sides (step 901). The time it takes for each beacon receiver at the sides of the remote to receive the beacon varies depending on how the remote is held.
The CPU of the remote determines at which side of the remote the associated beacon receiver has first received the beacon signal (step 902). In this example, if the remote is held tilted toward right, the CPU checks which of the upper side and the left side of the remote faces the television (step 902). A signal is then transmitted from the LED mounted at the side facing the television.
If the check finds that the upper side of the remote squarely faces the television, the LED 1 at the upper surface of the remote transmits a signal 1 (step 903). Here, the signal 1 transmitted represents “up” when the button 1 is pressed, “right” when the button 2 is pressed, “down” when the button 3 is pressed, and “left” when the button 4 is pressed.
If the check finds that the left side of the remote squarely faces the television, the LED 2 at the left side of the remote transmits a signal 2 (step 904). Here, the signal 2 transmitted represents “right” when the button 1 is pressed, “down” when the button 2 is pressed, “left” when the button 3 is pressed, and “up” when the button 4 is pressed.
If the remote is held vertical and at an angle, the tilt sensor can precisely determine which side of the remote faces up. So, the arrangement described with reference to
It should be further understood by those skilled in the art that although the foregoing description has been made on embodiments of the invention, the invention is not limited thereto and various changes and modifications may be made without departing from the spirit of the invention and the scope of the appended claims.
Number | Date | Country | Kind |
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2005-331019 | Nov 2005 | JP | national |