JP4454556B2 - Video equipment - Google Patents

Description

  The present invention relates to a video device having a plurality of external input terminals, and more particularly to a video device that can easily select an external input terminal for inputting a video signal.

  An increasing number of video devices such as television receivers are provided with a plurality of external input terminals to which external connection devices such as video cassette recorders, DVD players, HDD recorders, and BS digital tuners can be connected. In addition, the functions of video equipment and externally connected equipment are abundant, but user operations for realizing each function are performed using a remote controller (hereinafter referred to as a remote controller) using infrared rays or the like. There are many.

  When a user wants to view a video output from an externally connected device connected to one of the external input terminals of a video device having a plurality of external input terminals, first, the user presses a power-on button on the remote control of the video device. In addition, an external input terminal to which the externally connected device is connected is selected from a plurality of external input terminals of the video equipment by remote control operation. Furthermore, by instructing power-on and playback of the externally connected device by remote control operation of the externally connected device, a desired video can be viewed on the video device. In this way, when viewing video output from an externally connected device connected to an external input terminal on a video device, the user needs to perform operations with a plurality of remote controllers, and multiple button operations on the remote controller. Need to do.

  As a method of reducing the number of button operations, information that compares the remote control code for playback of externally connected devices connected to external input terminals and the number of connected external input terminals is stored in the television receiver. When the playback button of the external connection device is pressed, there is a method in which the television receiver receives the remote control code and switches to the video from the external input terminal to which the corresponding external connection device is connected (for example, Patent Literature 1).

  Further, the remote control code for turning on the television receiver, the remote control code for selecting the external input terminal to which the corresponding external connection device is connected, and the playback remote control code for the external connection device (for example, a video cassette recorder) are associated. There is a method of storing information in a television receiver. When using this method, when the playback button on the external device is pressed, the television receiver receives the remote control code, turns on the television receiver, and the corresponding external device is connected. The video is switched from the external input terminal (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 11-27577 (paragraphs 0018-0031, FIG. 1) Japanese Patent Laid-Open No. 5-236294 (paragraphs 0006-0009, FIG. 1)

  In the method described in Patent Document 1, the user needs to confirm whether the power of the television receiver is turned on before pressing the playback button of the externally connected device. If the power of the television receiver is not turned on, the user must first press the power-on button on the remote control of the television receiver and then press the playback button on the remote control of the external device.

  In the method described in Patent Document 2, the remote control code for turning on the television receiver and the corresponding external connection device are connected by using both the remote control of the external connection device and the remote control of the television receiver. It is necessary to store information relating the selected remote input terminal remote control code and the playback remote control code of an externally connected device (for example, a video cassette recorder) in the television receiver. The task of registering the associated information has been complicated.

  The present invention is an invention for solving the above-described problems, and provides a video device capable of accurately displaying a video output by an external connection device desired by a user with a simple operation. With the goal.

Video apparatus according to the present invention, a remote command signal transmitter of each external device and video device (e.g., remote controller) receiving means for receiving a signal transmitted from (e.g., a remote control infrared receiver 18) and, in the Yu chromatography The In response to the operation, command signal registration instruction means for outputting a registration instruction signal indicating that information indicating a command signal indicating the start of power supply transmitted by the remote command signal transmitter of the externally connected device is stored in the memory means (for example, When a registration instruction signal is output from the remote control code registration button 19), an external input terminal information grasping means (for example, the control unit 16) for grasping information indicating the external input terminal designated by the user, and the command signal registration instruction means In addition, the information indicating the external input terminal grasped by the external input terminal information grasping means is the first information received from the remote command signal transmitter of the externally connected device. With information indicating a command signal indicating the start power supply as the second information, the first information and the second information registration means for storing in the memory means in correspondence to (e.g., control unit 16), the receiving means When a command signal indicating the start of power supply is received from the remote command signal transmitter of the external device, it is determined whether or not the command signal matches the command signal indicated by the second information stored in the memory means When the determination means (for example, the control unit 16) and the determination means match, the external input terminal indicated by the first information corresponding to the received command signal is displayed on the video displayed by the video display means. DOO input switching unit to become signal is selected as an external input terminal to be input (e.g., switching circuit unit 13) and, when receiving a command signal indicating the start power supply from a remote command signal transmitter of the external connection device A power supply control means for starting power supply to the video equipment when the video equipment is in a standby state; and a command signal indicating the start of power supply received by the determination means from the remote command signal transmitter of the externally connected equipment Management means for storing, in the memory means, third information indicating the selection order of the external input terminals by the input switching means when it is determined that the command signal indicated by the second information stored in the memory means matches. And the management means reverses the selection order indicated by the third information stored in the memory means when receiving a command signal indicating power supply stop from the remote command signal transmitter of the externally connected device. The input switching means is instructed to select an external input terminal that is identified by following the above and is other than the external input terminal to which the external device is connected. Characterized in that it obtain.

  The power supply control means may be configured to determine whether or not the video equipment is in a standby state depending on whether or not power is supplied to the video display means.

  If the registration means does not output a registration instruction signal from the command signal registration instruction means, the first information and the second information are stored in the memory means even if a command signal is received from the remote command signal transmitter of the externally connected device. It is preferable that it is comprised so that it may not memorize | store.

When the management unit determines that the command signal indicating the start of power supply received from the remote command signal transmitter of the externally connected device matches the command signal indicated by the second information stored in the memory unit. In addition, fourth information indicating whether the video device is in a standby state or a state where power is supplied to the video device is stored in the memory means, and the selection order indicated by the third information is reversed. When there is no external input terminal to be identified and the fourth information indicates that power is being supplied to the video equipment, tuner means (for example, the tuner unit 12) is gives an instruction to the input switching means so as to select as a means of signal comprising the original image to be displayed by the video display means is input, the external identified following the selection order in which the third information is shown in the opposite direction There is no force terminal, and when the fourth information is video equipment indicates that it is in the standby state, it may be configured to set the video apparatus to the standby state. According to such a configuration, based on the third information and the fourth information, the state of the power supply state of the video equipment is also returned to the state before the point in time when the selection process of the input switching unit is executed. Can do.

According to the present invention, when the video equipment outputs a registration instruction signal from the command signal registration instruction means in response to a user operation, the first information indicating the external input terminal grasped by the external input terminal information grasping means is obtained. The information indicating the command signal indicating the start of power supply received from the remote command signal transmitter of the externally connected device is used as the second information, and the first information and the second information are associated with each other in the memory means. When the registration means for storing and the receiving means receive a command signal indicating the start of power supply from the remote command signal transmitter of the externally connected device, the command signal and the command indicated by the second information stored in the memory means A video that the video display means displays the external input terminal indicated by the first information corresponding to the received command signal when it is determined that the judgment means matches the judgment means that judges whether or not the signals match No Input switching means for selecting as an external input terminal to which the signal to be input is provided, so that the video output by the external connection device desired by the user can be displayed on the video display means by a simple operation. In addition, the possibility of erroneous registration of the command signal can be reduced as compared with the case where the command signal is registered only by detecting that the signal is input to the external input terminal or receiving the command signal from the external device. That is, it is possible to reduce the possibility that a command signal not intended by the user is registered. In addition, when a command signal indicating the start of power supply is received from a remote command signal transmitter of the externally connected device, when the video device is in a standby state, power supply control means for starting power supply to the video device; When the determination means determines that the command signal indicating the start of power supply received from the remote command signal transmitter of the externally connected device matches the command signal indicated by the second information stored in the memory means, Management means for storing in the memory means the third information indicating the selection order of the external input terminals by the switching means, and the management means receives a command signal indicating power supply stop from the remote command signal transmitter of the externally connected device In this case, the external input terminal is specified by tracing the selection order indicated by the third information stored in the memory means in the reverse direction, and the external connection device is connected. Since the input switching means is instructed to select an external input terminal other than the external input terminal, the history of the selection order of the external input terminals remains in the memory means, and the history of the video equipment is determined using the history. Thus, it is possible to return to the state before the time when the selection process of the input switching means is executed.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a circuit configuration of a first embodiment of a television receiver according to the present invention. In the configuration shown in FIG. 1, a television receiver that is a video device includes a tuner unit 12 that receives a signal from an antenna 11 that receives a television video signal, and an external input that inputs a video signal from an externally connected device. Terminal 1, external input terminal 2 and external input terminal 3, and a switching circuit that selects one of the output of tuner unit 12 or external input terminals 1 to 3 and outputs a video signal from the selected external input terminal It has an on-screen display function for converting video signals from the unit 13 and the switching circuit unit 13 into signals suitable for the video display unit (video display means) 15 and displaying characters on the screen of the video display device 15. The video signal processing circuit unit 14, the video display unit 15 such as a liquid crystal panel or a cathode ray tube, and the channel selection / switching circuit unit 13 of the tuner unit 12 A control unit 16 that performs input terminal selection and control of the video signal processing circuit unit 14, a memory unit 17 that stores information such as a remote control code, and a remote control that receives infrared signals from a remote control (not shown). An infrared light receiver 18, a remote control code registration button 19 for performing an operation for storing a remote control code of the external connection device, and a remote control code deletion button 20 for deleting the remote control code of the external connection device from the memory 17 are provided. As remote controllers, there are remote controllers that transmit infrared signals to video devices (remote devices for video devices) and remote controllers that originally transmit infrared signals to external devices (remote devices for external devices). The remote control infrared light receiving unit 18 of the video equipment can also receive an infrared signal from the remote control of each external device. In addition, here, a remote command signal transmitter that transmits an infrared signal as a remote command signal transmitter that transmits a command signal (for example, a remote control code) is exemplified, but the remote command signal transmitter is not limited to a remote control that transmits an infrared signal, For example, it may be one that transmits radio waves.

  The remote control code registration button 19 and the remote control code deletion button 20 are connected to the control unit 16. When the user presses the remote control code registration button 19, the control unit 16 detects that the remote control code registration button 19 has been pressed, and the external connection connected to the external input terminal 1, the external input terminal 2, or the external input terminal 3. A process for registering in the memory unit 17 a remote control code of the device (for example, a remote control code for instructing power-on of the externally connected device, but may be a remote control code for reproduction operation, etc.) is executed. When the processing is executed, the memory unit 17 stores the remote control code of the externally connected device and information indicating whether the externally connected device is connected to the external input terminal 1, the external input terminal 2 or the external input terminal 3. Is saved.

  When the user presses the remote control code deletion button 20, the control unit 16 detects that the remote control code deletion button 20 has been pressed, and the remote control code of the externally connected device stored in the memory unit 17 and its external Information indicating whether the connected device is connected to the external input terminal 1, the external input terminal 2, or the external input terminal 3 is deleted. Note that the functions of the remote control code registration button 19 and the remote control code deletion button 20 may be assigned to the remote control buttons of the video equipment.

  The tuner unit 12, the switching circuit unit 13, and the video signal processing circuit unit 14 are connected to the control unit 16 through a bidirectional bus 22 and execute control according to a command signal from the control unit 16.

  The remote control infrared light receiving unit 18 is connected to the control unit 16. The remote control infrared light receiving unit 18 receives the infrared signal transmitted from the remote control of the video equipment, and outputs a remote control code corresponding to the received infrared signal to the control unit 16. The control unit 16 inputs the remote control code output from the remote control infrared light receiving unit 18 and performs an operation process corresponding to the input remote control code. For example, when the user performs an operation of switching the channel on the remote control of the video equipment in order to switch the television channel, the remote control infrared light receiving unit 18 receives and receives the infrared signal from the remote control of the video equipment. A remote control code indicating channel switching according to the infrared signal is output to the control unit 16. The control unit 16 outputs a command signal for switching channels to the tuner unit 12 in accordance with the remote control code. The tuner unit 12 switches channels according to the command signal.

  The control unit 16 can perform power control of the tuner unit 12, the switching circuit unit 13, the video signal processing circuit unit 14, and the video display unit 15, and a remote control code that cuts off power supply to the video device by remote control operation of the video device. When an infrared signal corresponding to the signal is transmitted, control is performed to cut off power supply to the tuner unit 12, the switching circuit unit 13, the video signal processing circuit unit 14, and the video display unit 15, and the standby state (standby state) It becomes. The standby state is a state where power is supplied only to the part for receiving the remote control code and the memory unit 17 in the video equipment. Further, a state that is not in the standby state is a state in which power is supplied to the video equipment (power-on state).

  In the standby state, power is supplied only to the control unit 16, the memory unit 17, and the remote control infrared light receiving unit 18. In the standby state, when an infrared signal corresponding to a remote control code for starting power supply to the video equipment is transmitted by a remote control operation of the video equipment, the control section 16 includes a tuner section 12, a switching circuit section 13, and a video signal processing circuit section. 14 and the video display unit 15 are started to be in a state in which the screen display of the video display unit 15 is possible. Therefore, the control unit 16 serves as a power supply control unit that starts power supply to the video equipment. A power supply control circuit may be installed between the remote control infrared light receiving unit 18 and the control unit 16. In this case, when the remote control infrared light receiving unit 18 receives an infrared signal corresponding to the remote control code that cuts off the power supply, the remote control infrared light receiving unit 18 notifies the power supply control circuit accordingly. At that time, the power supply control circuit cuts off the power supply to each component other than the memory unit 17 and the remote control infrared light receiving unit 18. In addition, starting power supply is referred to as power-on or power-on, and shutting off power supply is sometimes referred to as power-off or power-off.

  When the user performs a remote control operation of an externally connected device connected to the external input terminal 1, the external input terminal 2, or the external input terminal 3, for example, a remote control operation (power-on operation) for starting power supply to the externally connected device is performed. When it is performed, the remote control infrared light receiving unit 18 receives an infrared signal corresponding to a remote control code for a power-on operation with respect to the externally connected device. Then, a remote control code for powering on the external connection device is output to the control unit 16. The control unit 16 compares the remote control code input from the remote control infrared light receiving unit 18 with the remote control code stored in the memory unit 17 of the video equipment. Hereinafter, it will be described that the remote controller transmits an infrared signal corresponding to the remote control code, simply that the remote control transmits the remote control code. Further, it is described that the remote control infrared light receiving unit 18 receives an infrared signal corresponding to the remote control code, simply that the remote control infrared light receiving unit 18 receives the remote control code.

  When the input remote control code is a remote control code of an external connection device, the control unit 16 determines that the external connection device corresponding to the remote control code is the external input terminal 1, the external input terminal 2, or the external input terminal 3. It is determined from the information stored in the memory unit 17 to which of these is connected.

  When the control unit 16 detects information indicating that the external connection device is connected to the external input terminal 1 from the information stored in the memory unit 17, the external connection device connected to the external input terminal 1 is detected. It is determined that a power-on remote control operation has been performed. In that case, the control unit 16 outputs a command signal for selecting the input of the external input terminal 1 to the switching circuit unit 13. The switching circuit unit 13 switches the external input terminal of the signal input destination to the external input terminal 1 and outputs a video signal input from the external input terminal 1 to the video signal processing circuit unit 14. The video signal processing circuit unit 14 outputs the input video signal from the external input terminal 1 to the video display unit 15, and the video display unit 15 displays the video signal from the external input terminal 1 on the screen.

  Next, the operation of the video equipment will be described with reference to FIG. FIG. 2 is a flowchart illustrating an example of a processing flow for registering a remote control code of an externally connected device in a video device. First, the user presses the remote control code registration button 19 when storing the remote control code of the externally connected device in the video equipment. The control unit 16 determines whether the remote control code registration button 19 has been pressed (step S101). If it is determined that the remote control code registration button 19 has not been pressed, the process is terminated. If it is determined that the remote control code registration button 19 has been pressed, an external input terminal selection screen is displayed (step S102).

  Specifically, the control unit 16 outputs a command signal to the video signal processing circuit unit 14 so as to create a screen that allows the user to select an external input terminal to which an external device is connected. In response to the command signal, the video signal processing circuit unit 14 creates, for example, screen data shown in FIG. 3 and outputs it to the video display unit 15. Therefore, the video display unit 15 displays the screen shown in FIG. FIG. 3 is an explanatory diagram illustrating an example of a screen that allows the user to select an external input terminal to which an external device is connected. When the screen shown in FIG. 3 is displayed, the user selects an external input terminal to which the externally connected device is connected, for example, by operating an up / down button and a determination button provided on the remote controller of the video device. Here, for example, if the user has connected an external connection device to the external input terminal 1 of the video device, the user selects the external input terminal 1 by a remote control operation of the video device.

  As a result, the control unit 16 determines that the external input terminal 1 has been selected (step S103).

  Then, the control unit 16 outputs a command signal to the video signal processing circuit unit 14 so as to create a screen that prompts the user to press the power button on the remote controller of the externally connected device connected to the external input terminal 1. In response to the command signal, the video signal processing circuit unit 14 creates, for example, screen data shown in FIG. 4 and outputs it to the video display unit 15. Therefore, the video display device 15 displays the screen shown in FIG. 4 (step S104). FIG. 4 is an explanatory diagram illustrating an example of a screen that prompts the user to press the power button on the remote controller of the external device.

  The user presses the power button on the remote controller of the externally connected device connected to the external input terminal 1. The remote controller of the external connection device transmits a remote control code corresponding to the power button in response to pressing by the user. The remote control infrared light receiving unit 18 receives the remote control code (step S105). Here, the received remote control code of the externally connected device is referred to as a remote control code A. The control unit 16 registers the external input terminal 1 and the remote control code A in the memory unit 17 in association with each other (step S106).

  Then, the control unit 16 outputs a command signal to the video signal processing circuit unit 14 so as to create a screen informing that the registration of the remote control code of the externally connected device is completed. In response to the command signal, the video signal processing circuit unit 14 creates, for example, screen data shown in FIG. 5 and outputs it to the video display unit 15. Therefore, the video display unit 15 displays the screen shown in FIG. 5 (step S107). FIG. 5 is an explanatory view showing an example of a screen for informing that the registration of the remote control code of the external device is completed. As described above, the control unit 16 displays the screen informing that the registration of the remote control code of the external connection device is completed on the video display unit 15, thereby completing the registration of the remote control code of the external connection device to the user. Let them know.

  When the user selects the external input terminal 2 instead of the external input terminal 1, the processes in steps S108 to S112 are executed. The processing of steps S108 to S112 related to the external input terminal 2 is the same as the processing of steps S103 to S107 related to the external input terminal 1. That is, if the external input terminal 1 in the process of steps S103 to S107 is read as the external input terminal 2, the process of steps S108 to S112 is performed. When the user selects the external input terminal 3 instead of the external input terminal 1 and the external input terminal 2, the processes of steps S113 to S117 are executed. The processing of steps S113 to S117 related to the external input terminal 3 is the same as the processing of steps S103 to S107 related to the external input terminal 1. That is, if the external input terminal 1 in the process of steps S103 to S107 is read as the external input terminal 3, the process of steps S113 to S117 is performed.

  FIG. 6 is an explanatory diagram showing a remote control code comparison table. The remote control code comparison table is a table formed in the memory unit 17 by the processes of steps S106, S111, and S116. The remote control code of the external connection device connected to the external input terminal 2 is referred to as a remote control code B, and the remote control code of the external connection device connected to the external input terminal 3 is referred to as a remote control code C. When all the processes of steps S106, S111, and S116 are executed, a remote control code comparison table as shown in FIG. 6 is formed, but only a part of the processes of steps S106, S111, and S116 is executed. In such a case, some of the remote control code A, remote control code B, and remote control code C are not registered in the remote control code comparison table. In FIG. 6, the data stored in the external input terminal number column is first information indicating the external input terminal to which the externally connected device is connected (information indicating the external input terminal grasped by the external input terminal information grasping means). The data stored in the remote control code column corresponds to the second information indicating the command signal transmitted by the remote command signal transmitter of the external device.

  When the user wants to connect a new external connection device to the external input terminal 1, external input terminal 2 or external input terminal 3, the user presses the remote control code delete button 20 to input the external input terminal 1 or external input from the remote control code comparison table. The remote control code corresponding to the terminal 2 or the external input terminal 3 may be deleted, and the remote control code of the external connection device may be registered again according to the above procedure.

  Next, the operation of the video equipment when the user intends to view the video of the externally connected equipment connected to the external input terminal after the user has registered the remote control code in the memory unit 17 in advance as described above. Here, after registering the remote control code (here, remote control code A) of the power button of the externally connected device connected to the external input terminal 1, the user is connected to the external input terminal 1 while watching the television image. Take as an example the case of trying to view the video of a connected device.

  FIG. 7 is a flowchart showing an example of processing when the power button on the remote controller of the external device is pressed. The user presses the power button on the remote controller of the externally connected device connected to the external input terminal 1. Remote control code A is transmitted from the remote controller of the external device. Therefore, the external device is turned on and a video signal is input to the connected external input terminal 1. In the video equipment, the remote control infrared light receiving unit 18 receives the remote control code A.

  The control unit 16 compares the received remote control code A with a remote control code for controlling the video equipment such as a remote control code for switching the television channel of the video equipment (step S201). If it is a remote control code for controlling the video equipment (in the case of “YES”), the control unit 16 ends the execution of this processing and executes processing such as switching the television channel. If the remote control code is not for controlling the video equipment (in the case of “NO”), the control unit 16 refers to the remote control code comparison table stored in the memory unit 17 (step S202).

  The control unit 16 determines whether or not the received remote control code A matches the remote control code in the remote control code comparison table stored in the memory unit 17 (step S203). If the determination results do not match (in the case of “NO”), the execution of the process is terminated. When the control unit 16 detects that the received remote control code A matches the remote control code in the remote control code comparison table (in the case of “YES”), the control unit 16 shifts the processing to step S204.

  In step S204, the control unit 16 determines whether the video equipment is in a standby state. For example, when the video display unit 15 is powered on, the control unit 16 determines that the video device is in a power-on state. If it is determined that the video equipment is in the power-on state, the process proceeds to step S206. When it is determined that the video equipment is in the standby state, the control unit 16 turns on the tuner unit 12, the switching circuit unit 13, the video signal processing circuit unit 14, and the video display device unit 15, and the video display device 15. Is enabled (step S205). Thereafter, the process proceeds to step S206.

  In step S <b> 206, the control unit 16 outputs a command signal for switching a signal to be input to a signal from the external input terminal 1 to the switching circuit unit 13. The switching circuit unit 13 switches the input signal from the signal output from the tuner unit 12 to the signal from the external input terminal 1 in accordance with the command signal, and outputs the signal from the external input terminal 1 to the video signal processing circuit unit 14. To do. The video signal processing circuit unit 14 causes the video display unit 15 to display a screen based on the signal from the external input terminal 1.

  As described above, when the user wants to view the video from the externally connected device connected to the external input terminal 1 while viewing the television video from the tuner unit 12 with the video device, the user wants to view the video from the external input terminal 1. By simply pressing the power button on the remote controller of the externally connected device connected to the, the video displayed on the video device is automatically switched from the image of the tuner unit 12 to the video of the externally connected device. Can be viewed. Here, the external connection device connected to the external input terminal 1 is taken as an example. However, when the user wants to view the video from the external connection device connected to the external input terminal 2 or the external input terminal 3, the external connection device is also used. Just press the power button on the remote control of the device to view the video of the external device. The same applies to the case where the user wants to view the video of the externally connected device connected to the external input terminal 2 or 3 while viewing the video of the externally connected device connected to the external input terminal 1.

  Further, even when the video equipment is in a standby state, the video equipment can be simply operated by operating the power button on the remote controller of the externally connected equipment (or the playback button operation if registered in the memory unit 17). Thus, it is possible to quickly view the video of the externally connected device desired by the user without performing the power supply operation and the external input terminal switching operation.

  In this embodiment, when registering the remote control code of the externally connected device, the user is caused to press the remote control code registration button. In other words, as long as the remote control code registration button is not pressed, the control unit 16 of the video equipment ignores the remote control code received from the external device and does not start control for registering the remote control code. Then, when there is no remote control code registration button, for example, the remote control code is compared with the case where the remote control code is registered simply by detecting that a signal has been input to the external input terminal or receiving the remote control code of the external device. Can reduce the possibility of incorrect registration. That is, the possibility of registering a remote control code that is not intended by the user can be reduced.

Embodiment 2. FIG.
In the first embodiment, the control unit 16 refers to the remote control code comparison table illustrated in FIG. 6 and controls power-on based on the remote control operation of the external connection device. However, the user may want to control the power-off of the externally connected device and the video device that are powered on by operating the remote controller of the externally connected device. In this embodiment, the control unit 16 also performs power-off control based on a remote control operation of the external connection device. The configuration of the video equipment of this embodiment is the same as that of the video equipment of the first embodiment.

  FIG. 8 is an explanatory diagram showing an example of a remote control code comparison table to which a power-off code is added. In the example shown in FIG. 8, in the remote control code comparison table, the remote control code A1 is registered corresponding to the external input terminal number 1, the remote control code B1 is registered corresponding to the external input terminal number 2, and the external input terminal number. 3 corresponds to the remote control code C1. The remote control code A1, the remote control code B1, and the remote control code C1 are transmitted from the external connection device in the same manner as the registration for the remote control code A, the remote control code B, and the remote control code C described in the first embodiment. The control unit 16 to which the remote control code A1, the remote control code B1, and the remote control code C1 are input registers in the memory unit 17. In this embodiment, the remote controller of the external connection device transmits a power-off remote control code when the power button is pressed after transmitting a power-on remote control code, and transmits a power-off remote control code after transmitting a power-off remote control code. It is assumed that a power-on remote control code is transmitted when the button is pressed. Furthermore, in this embodiment, when a power-off remote control code transmitted from the remote controller of the external connection device is input, the control unit 16 previously transmits the status of the video equipment from the remote controller of the external connection device. Control to return to the state just before the power-on remote control code was input.

  When performing power-off control, the control unit 16 registers a management table (described later) in the memory unit 17. The control unit 16 refers to the remote control code comparison table to determine whether the remote control code received by the remote control infrared light receiving unit 18 is a power-off remote control code. Furthermore, it is determined with reference to the management table whether to switch the external input terminal to which a signal is input or to turn off the power of the video equipment. The control unit 16 issues an instruction command to the switching circuit unit 16, the tuner unit 12, the video signal processing circuit unit 14, and the video instruction unit 15 based on the determination result.

The management table is stored in the memory unit 17. In the management table, information indicating the order in which the externally connected devices are powered on and information indicating the power state (whether the power is on or off) are registered. FIG. 9 is an explanatory diagram showing an example of the management table. FIG. 9A shows a management table in which information indicating that the video equipment is in a power-on state and all external devices are in a power-off state is registered. FIG. 9B shows a management table in which information indicating that all video devices and externally connected devices are powered off is registered. Whether or not the video equipment is in a power-off state is determined by, for example, whether or not the video display unit 15 is in a power-off state. It is preferable to register not only information indicating whether the power is on or off but also information indicating the channel of the television image in the portion relating to the video equipment in the management table. The information registered in the management table allows the user to return the video equipment to the previous state simply by turning off the power by operating the remote control of the externally connected equipment. You can display. The data stored in the status column in the management table corresponds to fourth information indicating whether the video device is in a standby state or in a state where power is supplied to the video device, and each column of the order. The data stored in this corresponds to the third information indicating the selection order of the external input terminals.

  FIG. 10 is an explanatory diagram illustrating another example of the management table. FIG. 10A shows a management table in which information indicating that the externally connected device 1 is powered on after the video device is powered on is registered. The control unit 16 registers “ON” in the status field of the external input terminal number 0 in the management table when the video equipment is powered on. The control unit 16 refers to the remote control code comparison table shown in FIG. 8 when the external device 1 is turned on (remote control code A is transmitted), and the remote control code A corresponds to the external input terminal number 1. The remote control code is registered, “1” is registered in the order column of the external input terminal number 1 of the management table, and “ON” is registered in the status column.

  FIG. 10B shows a management table in which information indicating that the externally connected device 1 is powered on first and then the externally connected device 2 is powered on when the video device is powered off is shown. Has been. The control unit 16 refers to the remote control code comparison table shown in FIG. 8 when the external device 1 is turned on (remote control code A is transmitted), and the remote control code A corresponds to the external input terminal number 1. The remote control code is registered, “1” is registered in the order column of the external input terminal number 1 of the management table, and “ON” is registered in the status column. The control unit 16 refers to the remote control code comparison table shown in FIG. 8 when the external device 2 is turned on (remote control code B is transmitted), and the remote control code B corresponds to the external input terminal number 2 It is determined that there is a remote control code to be registered, “2” is registered in the order column of the external input terminal number 2 of the management table, and “ON” is registered in the status column. Regarding the numerical value in the order column, “0” is designated by default for the video equipment. For externally connected devices, the control unit 16 increases the number according to the number of power-on devices. However, when the power of the externally connected device is turned off, the control unit 16 returns the numerical value in the corresponding external input terminal number column to “0”.

  Next, as shown in FIG. 8, the control unit 16 in advance according to the user's operation displays the remote control code (here, the remote control code A1, the remote control code B1, and the remote control code C1) of the power button of the external connection device in the remote control code comparison table. After saving, a state corresponding to the management table shown in FIG. 10B (when the video device is in a power-off state, the external device 1 is first turned on, and then the external device 2 is turned on. ), The operation of the control unit 16 will be described by taking as an example a case where the power of the external connection device 1 and the external connection device 2 is about to be turned off.

  FIG. 11 is a flowchart illustrating an example of processing when an attempt is made to turn off the power of the externally connected device according to the second embodiment. When the control unit 16 executes the process shown in FIG. 11, the contents of the management table change as shown in FIG. The content shown in FIG. 12A is the same as the content shown in FIG.

  Assume that the user presses the power button on the remote controller of the externally connected device connected to the external input terminal 2 in a state corresponding to the management table shown in FIG. The remote controller of the externally connected device transmits a remote control code B1. This is because the remote controller of the externally connected device should have transmitted a remote control code (remote control code B) indicating power on in response to the power button being previously pressed. The externally connected device that has received the remote control code B1 turns off the power. In the video equipment, the remote control infrared light receiving unit 18 receives the remote control code B1 and outputs the remote control code B1 to the control unit 16. The control unit 16 executes the processes of step S201, step S202, and step S203 shown in FIG. The processing in step S201, step S202, and step S203 shown in FIG. 11 is the same as the processing in step S201, step S202, and step S203 shown in FIG.

  The controller 16 determines whether or not the received remote control code B1 matches the power-off code in the remote control code comparison table (step S301). If the determination result is “YES”, the process proceeds to step S302. If the determination result is “NO”, the execution of the process is terminated. In this example, since the remote control code B1 exists in the remote control code comparison table (see FIG. 8), the control unit 16 executes the process of step S302.

  In step S302, the control unit 16 determines whether or not the external input terminal number corresponding to the received remote control code B1 matches the current external input terminal number selected by the switching circuit unit 13. If the determination result is “YES”, the process proceeds to step S303. If the determination result is “NO”, the execution of the process is terminated. In this example, since the external input terminal number corresponding to the remote control code B1 is “2” and the current external input terminal number is 2 (see FIG. 12A), the control unit 16 performs the process of step S303. Execute.

  In step S303, the control unit 16 refers to the management table (in this case, the management table shown in FIG. 12A) and supplies power to all the externally connected devices connected to other external input terminal numbers. Determine if it is off. If the determination result is “YES”, the process proceeds to step S304. If the determination result is “NO”, the process proceeds to step S307. In this example, since the power supply state corresponding to the external input terminal number 1 is on (see FIG. 12A), the process proceeds when the determination result is “NO”.

  The control unit 16 refers to the management table (in this case, the management table shown in FIG. 12A) and is less than the order number of the external input terminal number corresponding to the externally connected device that has transmitted the remote control code B1. Select the external input terminal number that is off. Here, since the order number of the external input terminal number corresponding to the externally connected device that transmitted the remote control code B1 is 2, the control unit 16 selects the external input terminal number 1 corresponding to the order number 1. And the control part 16 outputs the command signal which instruct | indicates switching the external input terminal to the switching circuit part 13 (step S307). In this example, the control unit 16 instructs the external input terminal to which a signal is input to be switched from the external input terminal 2 to the external input terminal 1. As a result, the user can view the video from the external connection device connected to the external input terminal 1. Further, the control unit 16 sets the order corresponding to the external input terminal number 2 in the management table to “0” and the state to “off”. As a result, the contents of the management table are as shown in FIG.

  Next, it is assumed that the user presses the power button of the remote controller of the external connection device connected to the external input terminal 1 in a state corresponding to the management table shown in FIG. The remote controller of the externally connected device transmits a remote control code A1. This is because the remote controller of the externally connected device should have transmitted a remote control code (remote control code A) indicating power on in response to the power button being previously pressed. The externally connected device that has received the remote control code A1 turns off the power. In the video equipment, the remote control infrared light receiving unit 18 receives the remote control code A1.

  The control unit 16 determines that the remote control code A1 is a power-off code with reference to FIG. 8 (step S301), and with reference to FIG. 12B, the external input terminal corresponding to the received remote control code A1. And the current external input terminal selected by the switching circuit unit 13 are determined to match (step S302). In this case, since they match, the control unit 16 determines whether or not the power of all externally connected devices connected to other external input terminals is in an off state (step S303). In this case, the power supplies of all the externally connected devices are in the off state (see FIG. 12B), and the control unit 16 executes the process of step S304. That is, the control unit 16 outputs a command signal instructing the switching circuit unit 13 to switch the signal input destination to the tuner unit (step S304). The switching circuit unit 13 switches the signal input destination to the tuner unit in accordance with the instruction. Then, the control unit 16 determines whether or not the power supply of the video equipment is in an initial off state (standby state) (step S305). The initial off state means that the video device is in a standby state when the externally connected device that first transmitted the power-on remote control code transmits the remote control code.

  In the management table shown in FIG. 12B, since the state of the external input terminal number “0” is off, it means that it is an initial off state. Therefore, the control unit 16 controls the tuner unit 16, the video signal processing unit 14, and the video display unit 15 to be turned off, and the video equipment is in a standby state (step S306). Further, the control unit 16 sets the order of the external input terminal number 1 in the management table to “0”, and sets the state to “off”. Therefore, the management table is as shown in FIG.

  FIG. 13 is an explanatory diagram showing still another example of the management table. State corresponding to the management table shown in FIG. 13A (when the video device is powered on, the externally connected device 2 is first powered on, then the externally connected device 1 is powered on, and then the externally connected device 3 The operation of the control unit 16 will be described by taking as an example a case where the power is turned off in the order of the externally connected device 2, the externally connected device 1, and the externally connected device 3 from when the power is turned on.

  Assume that the user presses the power button on the remote controller of the externally connected device connected to the external input terminal 2 in a state corresponding to the management table shown in FIG. The remote controller of the externally connected device transmits a remote control code B1. The externally connected device that has received the remote control code B1 turns off the power. In the video equipment, the remote control infrared light receiving unit 18 receives the remote control code B1 and outputs the remote control code B1 to the control unit 16. In this example, the control unit 16 executes the processes of steps S201, S202, S203, S301, S302, and S303, but the external input terminal number corresponding to the remote control code B1 is “2”. The currently selected external input terminal number is “3” and does not match. Therefore, the control unit 16 sets the determination result to “NO” (step S302). Here, the control unit 16 sets the order of the external input terminal number 2 in the management table to “0”, and sets the state to “off”. As a result, the management table is in the state shown in FIG. In addition, the user continues to view the video from the external connection device connected to the external input terminal 3.

  Next, it is assumed that the user presses the power button on the remote controller of the external connection device connected to the external input terminal 1. The remote controller of the externally connected device transmits a remote control code A1. The externally connected device that has received the remote control code A1 turns off the power. In the video equipment, the remote control infrared light receiving unit 18 receives the remote control code A1 and outputs the remote control code B1 to the control unit 16. The control unit 16 executes the processes of steps S201, S202, S203, S301, S302, and S303, but the external input terminal number corresponding to the remote control code A1 is “1” and is selected by the switching circuit unit 13. The current external input terminal number is “3” and does not match. Therefore, the control unit 16 sets the determination result to “NO” (step S302). Here, the control unit 16 sets the order of the external input terminal number 1 in the management table to “0”, and sets the state to “off”. As a result, the management table is in the state shown in FIG. In addition, the user continues to view the video from the external connection device connected to the external input terminal 3.

  Next, it is assumed that the user presses the power button on the remote controller of the external device connected to the external input terminal 3. The remote controller of the externally connected device transmits a remote control code C1. The externally connected device that has received the remote control code C1 turns off the power. The control unit 16 executes the processes of steps S201, S202, S203, S301, S302, and S303, but the external input terminal number corresponding to the remote control code C1 is “3” and is selected by the switching circuit unit 13. The current external input terminal number is “3”, which matches. Therefore, the control unit 16 selects “YES” as the determination result (step S302). The power state is off for all other external input terminals. The control unit 16 sets the determination result to “YES” (step S303). And the control part 16 performs the process of step S304. That is, the control unit 16 outputs a command signal instructing the switching circuit unit 13 to switch the signal input destination to the tuner unit (step S304). The switching circuit unit 13 switches the signal input destination to the tuner unit in accordance with the instruction. Further, since the power of the video equipment is not in the initial off state (standby state) (see FIG. 13A, etc.), the power of the video equipment is not turned off (step S305). Then, the control unit 16 sets the order of the external input terminal number 3 in the management table to “0”, and sets the state to “off”. As a result, the management table is in the state shown in FIG. Further, the state of the video equipment returns to a state where the user can view the video of the tuner unit 12.

In the second embodiment, simply by turning off the power of the remote controller of the externally connected device, the video is switched to another externally connected device or the video is switched to the tuner unit, and the power of the video device can be turned off. . Specifically, when the remote control code received from the remote controller of the externally connected device is a command signal indicating power supply stop (remote control code for turning off the power), the control unit 16 stores the first code stored in the memory unit 17. 3 is an external input terminal identified by tracing the selection order indicated by the information 3 in the reverse direction, and other external input terminals other than the external input terminal to which the external connection device is connected (specifically, the remote control code is The external input terminal other than the external input terminal associated with the externally connected device corresponding to the transmitted remote controller and the external input terminal associated with the power-on information in the memory unit 17) is selected. By giving an instruction to the switching circuit unit 13, the switching circuit unit 13 can return the selected state to the original state. In addition, the control unit 16 is in a state where there is no external input terminal specified by following the selection order indicated by the third information in the reverse direction, and the fourth information is supplied with power to the video equipment. When it indicates that there is, the switching circuit unit 13 is instructed to select the tuner unit 12 as a means for inputting the signal that is the basis of the video displayed by the video display unit 15, and the third information When there is no other external input terminal specified by tracing the selection order shown in the reverse direction and the fourth information indicates that the video equipment is in a standby state, the video equipment is put in a standby state. Set.

  The present invention can be applied to a remote-controlled electronic device having a plurality of external input terminals.

It is a block diagram which shows the circuit structure of the television receiver of 1st Embodiment. It is a flowchart which shows an example of the flow of a process which registers the remote control code of an external connection apparatus. It is explanatory drawing which shows an example of the screen which makes a user select the external input terminal with which the external connection apparatus is connected. It is explanatory drawing which shows an example of the screen which prompts a user to press the power button of the remote control of an external connection apparatus. It is explanatory drawing which shows an example of the screen which notifies that registration of the remote control code of an external connection apparatus was completed. It is explanatory drawing which shows an example of a remote control code contrast table. It is a flowchart which shows an example of the process at the time of pushing the power button of the remote control of an external connection apparatus. It is explanatory drawing which shows an example of the remote control code comparison table to which the power-off code was added. It is explanatory drawing which shows an example of a management table. It is explanatory drawing which shows the other example of a management table. It is a flowchart which shows an example of the process at the time of trying to turn off the power supply of the external connection apparatus in 2nd Embodiment. It is explanatory drawing which shows the other example of a management table. It is explanatory drawing which shows the other example of a management table.

Explanation of symbols

1, 2, 3 External input terminal 11 Antenna 12 Tuner unit 13 Switching circuit unit 14 Video signal processing circuit unit 15 Video display unit 16 Control unit 17 Memory unit 18 Remote control infrared light receiving unit 19 Remote control code registration button 20 Remote control code deletion button 22 Both Bus

Claims (4)

In video equipment having a plurality of external input terminals to which externally connected equipment is connected to each of which inputs signals from the externally connected equipment, and video display means for displaying video,
Receiving means for receiving a signal transmitted from each external device and a remote command signal transmitter of the video device;
In response to the operation of the User chromatography The command signal registered external connection remote command signal transmitter device outputs a registration instruction signal indicating that stores information indicating a command signal indicating the start power supply to be transmitted to said memory means Instruction means;
An external input terminal information grasping means for grasping information indicating the external input terminal designated by the user;
When a registration instruction signal is output from the command signal registration instruction means, information indicating the external input terminal grasped by the external input terminal information grasping means is set as the first information, from a remote command signal transmitter of the externally connected device. with information indicating a command signal indicating the received power supply start as the second information, and registering means for storing in memory means in correspondence with the first information and second information,
When the receiving means receives a command signal indicating the start of power supply from a remote command signal transmitter of the externally connected device, the command signal matches the command signal indicated by the second information stored in the memory means. Determining means for determining whether to do;
When it is determined that the determination means match, an external input terminal indicated by the first information corresponding to the received command signal is input to an external input to which a signal based on the video displayed by the video display means is input Input switching means to select as a terminal ;
When receiving a command signal indicating the start of power supply from a remote command signal transmitter of an externally connected device, when the video device is in a standby state, power supply control means for starting power supply to the video device;
When the determination unit determines that the command signal indicating the start of power supply received from the remote command signal transmitter of the externally connected device matches the command signal indicated by the second information stored in the memory unit, Management means for storing in the memory means third information indicating the selection order of the external input terminals by the input switching means ,
When the management means receives a command signal indicating power supply stop from a remote command signal transmitter of the externally connected device, the management means follows the selection order indicated by the third information stored in the memory means in the reverse direction. A video device characterized in that an instruction is given to the input switching means so as to select an external input terminal specified by the external input terminal other than the external input terminal to which the external connection device is connected . Power supply control means, depending on whether the power supply is made to the image display unit, the video device determining whether claim 1 video apparatus according is in a standby state. If the registration instruction signal is not output from the command signal registration instruction means, the registration means receives the command signal from the remote command signal transmitter of the externally connected device and receives the first information and the second information in the memory means. The video equipment according to claim 1 or 2 . A tuner means for inputting a video signal,
Management means
When the determination means determines that the command signal indicating the start of power supply received from the remote command signal transmitter of the externally connected device matches the command signal indicated by the second information stored in the memory means, the video Storing in the memory means fourth information indicating whether the device is in a standby state or in a state where power is supplied to the video device;
There is no other external input terminal specified by tracing the selection order indicated by the third information in the reverse direction, and the fourth information indicates that the video equipment is being supplied with power. The tuner switching unit is instructed to select the tuner unit as a unit for inputting a signal that is a source of the video displayed by the video display unit;
When there is no external input terminal specified by tracing the selection order indicated by the third information in the reverse direction, and the fourth information indicates that the video equipment is in a standby state, the video equipment The video device according to claim 1 , wherein the video device is set in a standby state.

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