JP2006005575A - Remote control terminal and electronic equipment controllable with remote control signal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote control terminal whose power consumption can be suppressed. <P>SOLUTION: A control circuit attaining a remote control terminal includes a step (S440) of generating a signal for a data code by imparting a duty ratio in data coding transmission to a data code corresponding to a detected operation button when the operation button is depressed within a specified time after last depression (YES at S510), a step (S450) of outputting the signal for the data code, a step (S460) of storing the transmission time of the signal for the data code in a memory, a step (S420) of generating a signal for a custom code including a duty ratio in custom code transmission when the depression is not detected within the specified time after the last depression, and a step (S430) of outputting the signal for the custom code. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to control signal communication of an electronic device, and more particularly to a remote control terminal capable of suppressing power consumption for signal transmission and an electronic device that operates in accordance with the control signal.

  Television, VTR (Video Tape Recorder) and other electronic devices are remotely operated by a remote control terminal. Such a terminal preferably has a long operating time while suppressing power consumption. Therefore, techniques for reducing the power consumption of the remote control terminal are disclosed in, for example, JP-A-6-327071 (Patent Document 1), JP-A-3-29495 (Patent Document 2), and the like.

According to the technique disclosed in Patent Document 2, when it is necessary to transmit a plurality of data codes at a time, priority is given to each data, and the data is transmitted in order from the highest.
JP-A-6-327071 JP-A-3-29495

  Some electronic devices that can be controlled by a remote control signal perform a predetermined operation without transmitting a plurality of data codes. This electronic device is, for example, a television, a VTR, or the like.

  However, according to the technique disclosed in Patent Document 1, it is necessary to prepare priorities for transmitting a plurality of data codes in advance and hold them in a memory or other recording medium. Therefore, there are cases where the priority setting cannot be changed quickly, and there are cases where a signal according to the operation characteristics of the user cannot be transmitted.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a remote control terminal capable of controlling an electronic device in accordance with a user operation while suppressing power consumption. It is.

  Another object of the present invention is to provide an electronic device operable in response to a control signal transmitted from such a remote control terminal.

  In order to solve the above problems, according to one aspect of the present invention, the remote control terminal is specified by a custom code based on the input means for receiving an instruction input from the outside, the input of the instruction, and data Detecting means for detecting a transmission instruction of a signal for controlling the operation of an electronic device whose operation is controlled by a code, and a duty ratio determined in advance to represent transmission of a custom code based on the transmission instruction A first generation means for generating a first control signal having a first header code, a custom code, and a custom inversion code obtained by inverting the custom code, and transmission of a data code based on a transmission instruction Therefore, a second header code represented by a duty ratio different from a predetermined duty ratio, a data code, Second generation means for generating a second control signal having a data inversion code obtained by inverting the data code, and transmission means for outputting the generated first control signal and second control signal as an infrared signal; Time measuring means for detecting the transmission time of the first control signal, storage means for storing the transmission time of the first control signal, and a predetermined time after the transmission of the first control signal If a transmission instruction is newly detected before the time elapses, the first control means for causing the second generation means to generate the second control signal again and the first control signal are transmitted. When a transmission instruction is newly detected after a predetermined time elapses from the first generation unit, the first generation unit generates the first control signal, and the second generation unit receives the second control signal. Second control means for generating again.

  According to another aspect of the present invention, the remote control terminal is an electronic device that is specified by a custom code based on the input means for receiving an instruction input from the outside, and whose operation is controlled by the data code. Detection means for detecting a transmission instruction of a signal for controlling the operation of the device, a first header code predetermined to represent transmission of a custom code based on the transmission instruction, and a first code having a custom code A first generation means for generating one control signal, a second header code different from the first header code predetermined to represent transmission of the data code based on a transmission instruction, and a data code Second generation means for generating a second control signal, transmission means for outputting the generated first control signal and the second control signal, and the first control signal According to the storage means for storing the transmission time, the means for detecting the transmission time of the first control signal, and the time from when the first control signal is transmitted until the transmission instruction is newly detected And a transmission control means for controlling transmission of the first control signal and the second control signal according to the newly detected transmission instruction.

  Preferably, when a transmission instruction is newly detected before a predetermined time has elapsed since the transmission of the first control signal, the transmission control unit causes the second generation unit to First control means for generating a control signal again, and first generation when a transmission instruction is newly detected after a predetermined time has elapsed since the transmission of the first control signal And a second control means for causing the means to generate a first control signal and causing the second generation means to generate the second control signal again.

  Preferably, the first generation means generates a first control signal in which the first header code is represented by a predetermined first duty ratio. The second generation means generates a first control signal in which the second header code is represented by a second duty ratio different from the first duty ratio.

  Preferably, the first generation means generates a first control signal having a first header code, a custom code, and a custom inversion code obtained by inverting the custom code. The second generation means generates a second control signal having a second header code, a data code, and a data inversion code obtained by inverting the data code.

  According to another aspect of the present invention, the electronic device is a device that can be controlled by a remote control signal. The electronic device has a receiving means for receiving a remote control signal and a first duty ratio represented by a predetermined first duty ratio to represent transmission of a custom code for specifying the electronic device from the remote control signal. First detection means for detecting a first control signal having a header code, a custom code, and a custom inversion code obtained by inverting the custom code, and a data code for controlling the operation of the electronic device from the remote control signal A second header code represented by a second duty ratio different from a predetermined first duty ratio, a data code, and a data inversion code obtained by inverting the data code. The second detection means for detecting the control signal, the antenna for receiving the broadcast radio wave, and the broadcast radio wave A tuner for selecting a specified broadcast station, a time measuring means for measuring time, a storage means for storing the time when the second control signal is detected, and after the second control signal is detected Control means for causing the tuner to select a broadcast station specified by the data code when a second control signal is newly detected before a predetermined time elapses.

  According to still another aspect of the present invention, the electronic device is a device that can be controlled by a remote control signal. The electronic device includes a receiving unit for receiving a remote control signal, a first header code predetermined to represent transmission of a custom code for specifying the electronic device from the remote control signal, and a custom code. A first detection means for detecting a first control signal having a second header different from a predetermined first header code for representing transmission of a data code for controlling the operation of the electronic device from a remote control signal; A second detecting means for detecting a second control signal having a header code and a data code; a time measuring means for measuring time; and a time for storing the second control signal. Storage means and control means for executing a predetermined operation on the electronic device based on at least one of the control signals.

  Preferably, the remote control signal includes a first control signal in which the first header code is represented by a predetermined first duty ratio, and a first duty ratio in which the second header code is predetermined. And / or a second control signal represented by a different second duty ratio. The first detection means detects the first header code represented by the first duty ratio from the remote control signal. The second detection means detects the second header code represented by the second duty ratio from the remote control signal.

  Preferably, the remote control signal is a first control signal having a first header code, a custom code, and a custom inversion code obtained by inverting the custom code, a second header code, a data code, and a data code being inverted. And / or a second control signal having a data inversion code. The first detection means detects the first header code from the remote control signal. The second detection means detects the second header code represented by the second duty ratio from the remote control signal.

  Preferably, the electronic device further includes an antenna for receiving broadcast radio waves and a tuner for selecting a broadcast station specified by the data code from the broadcast radio waves. The control means causes the tuner to select a broadcasting station specified by the data code.

  When transmitting a signal for controlling an electronic device, the remote control terminal according to the present invention transmits the signal again by reducing the data amount of the signal to be transmitted according to the time elapsed since the previous transmission. Therefore, power consumption in the remote control terminal is suppressed.

  The electronic device according to the present invention operates in accordance with a signal for controlling an operation of receiving an elapsed time from a previous reception of the control signal within a predetermined time. Therefore, the responsiveness to the remote control terminal can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  A remote control terminal 100 according to an embodiment of the present invention will be described with reference to FIG. 1 and FIG. FIG. 1 is a diagram showing the appearance of remote control terminal 100.

  The remote control terminal 100 is configured to receive an infrared light emitting unit 160 that emits an infrared signal in response to a user operation, a monitor 102 that displays information indicating an operation state of the terminal, and an instruction input by the user. And an operation unit 140. The operation unit 140 moves a cursor displayed on the monitor 102, moves a key 104 for accepting a predetermined confirmation input, a channel button 128 for instructing channel up / down, and a button for adjusting the volume. 118 and a numeric button 106.

  FIG. 2 is a block diagram showing a functional configuration of remote control terminal 100.

  The remote control terminal 100 is connected to the infrared light emitting unit 160 and executes a predetermined process based on a signal input from the outside to execute control for transmitting an infrared signal, and input of a channel button 128. For channel selection circuit 120 for outputting an instruction to select a channel selected in response to operation, operation unit 140, and time of operation of remote control terminal 100 in response to a user instruction. Timer 150.

  With reference to FIG. 3, a data structure in remote control terminal 100 will be described. FIG. 3 is a diagram conceptually showing one mode of data storage in memory 112 of remote control terminal 100.

  System data unique to remote control terminal 100 is stored in area D300. This data includes manufacturer information of the remote control terminal 100, for example. Duty ratio dc given when remote control terminal 100 transmits an infrared signal is stored in area D310. This duty ratio dc is given, for example, when system data unique to the remote control terminal 100 is transmitted. Duty ratio dd is stored in area D320. The duty ratio dd includes a control signal output in response to a user operation, for example, a channel selection instruction or a volume adjustment amount. The time when the infrared signal is transmitted is stored in area D330. This time is calculated based on data input from the timer 150.

  A control structure of remote control terminal 100 according to the present embodiment will be described with reference to FIG. 4 and FIG. FIG. 4 is a flowchart showing a procedure of processing executed when remote control terminal 100 outputs an infrared signal in response to a user operation. This process is executed, for example, after a predetermined time has elapsed since the last infrared signal was transmitted.

  In step S410, control circuit 110 of remote control terminal 100 detects pressing of channel button 128 based on a signal input from operation unit 140. In step S420, control circuit 110 generates a custom code signal based on the data stored in memory 112 and the input data. The custom code signal includes, for example, a duty ratio dd stored in area D310 and system data stored in area D300. In step S430, control circuit 110 causes infrared light emitting unit 160 to transmit the generated custom code signal.

  In step S440, control circuit 110 generates a data code signal by adding a duty ratio dd at the time of data code transmission to the data code corresponding to the channel button for which the input is detected. This signal includes, for example, a duty ratio dd stored in region D320 (FIG. 3) and data for specifying a channel input from operation unit 140.

  In step S450, control circuit 110 causes infrared light emitting unit 160 to transmit the generated data code signal. In step S460, control circuit 110 stores the transmission time of the data code signal in area D330 of memory 112.

  FIG. 5 is a flowchart showing a procedure of infrared signal transmission processing executed by remote control terminal 100. The same steps as those described above are denoted by the same step numbers, and description thereof will not be repeated.

  In step S510, control circuit 110 determines based on the data stored in area D330 of memory 112 whether the time elapsed since the previous signal transmission is within a predetermined time. If the elapsed time is within the predetermined time (YES in step S510), the process proceeds to step S440. If not (NO in step S510), the process proceeds to step S420.

  Here, signals output from the remote control terminal will be described with reference to FIGS. 6 (A) and 6 (B) are diagrams each conceptually showing the configuration of an infrared signal output from remote control terminal 100 according to the present embodiment.

  As shown in FIG. 6A, when a custom code is transmitted, a duty ratio dc is given before the code. In order to improve the transmission accuracy of the custom code, a custom inversion code obtained by inverting the code may be added after the custom code.

  As shown in FIG. 6B, when a data code is transmitted, a code representing the duty ratio dd is added before the code. This duty ratio dd is set to indicate, for example, a value smaller than the duty ratio dc given at the time of transmission of the custom code. In other words, by adding a header code to which a different duty ratio is given before a custom code or data code to be transmitted, a receiving device (for example, a television receiver) can receive any infrared signal. It can be identified.

  FIG. 7 is a diagram conceptually showing the structure of a code generated when a conventional remote control terminal transmits an infrared signal. Conventionally, an infrared signal includes a header code having a predetermined duty ratio, a custom code for identifying the terminal, a custom inversion code obtained by inverting the custom code, and data to be controlled by the remote control terminal. And a data inversion code obtained by inverting the code. That is, a conventional terminal generates a transmission signal having a custom code and a data code each time an infrared signal is transmitted, and transmits the transmission signal to a television receiver or other devices. On the other hand, as shown in FIG. 6 (A) or FIG. 6 (B), remote control terminal 100 according to the present embodiment is used to identify either a custom code or a data code and any one of the codes. An infrared signal having a header code is transmitted to the receiving device. Therefore, the time required for transmitting the infrared signal is shorter than the time required for transmission by the conventional terminal.

  Next, with reference to FIG. 8, TV 800, which is an aspect of an electronic device that can operate based on a signal transmitted from remote control terminal 100 according to the present embodiment, will be described. FIG. 8 is a diagram illustrating a hardware configuration of television 800. The electronic device is not limited to a television, and may be a VTR, for example.

  The television 800 measures an internal time by using an antenna 890 for receiving a video / audio signal, an input unit 830 for receiving an instruction input by the user, an infrared light receiving unit 820 for receiving a remote control signal, and the like. A timing circuit 826 for outputting, a tuner 860 for selecting a predetermined radio wave based on an instruction from the received radio wave, and each data input from the outside or data stored in the memory 812 A control circuit 810 for executing a predetermined process, an OSD (On Screen Display) image generation circuit 880 for generating an image signal representing an operation state of the television 800, and a radio wave selected by a tuner 860 A synthesizing circuit 862 for synthesizing and outputting the video signal of the image and the image generated by the OSD image generating circuit 880; It includes an amplifier circuit 864 for amplifying and outputting audio signals, and a speaker 872 for outputting a display 870 and audio for displaying images.

  The control circuit 810 is realized by a microcomputer, for example. When the control circuit 810 detects reception of a predetermined custom code, the control circuit 810 turns on the power of the television 800. When control circuit 810 detects reception of a predetermined data code, it outputs a command for executing a predetermined operation in accordance with the code. For example, when the control circuit 810 detects reception of a predetermined channel code, the control circuit 810 outputs a command for causing the tuner 860 to select the channel. Alternatively, when reception of a data code for increasing the volume is detected, a command for amplifying the volume is output to the amplifier circuit 864. The volume output from the speaker 872 increases.

  With reference to FIG. 9, a data structure of television 800 will be described. FIG. 9 is a diagram conceptually showing one mode of data storage in memory 812 of control circuit 810.

  System data representing information unique to television 800 is stored in area D900. This data includes, for example, the serial number of television 800, a predetermined manufacturer identification code, and the like. Duty ratio dc for identifying a remote control signal received by infrared light receiving unit 820 is stored in region D910. Similarly, the duty ratio dd is stored in the region D920. For example, when the remote control signal is a signal for transmitting custom data, the duty ratio dc is used to detect that the transmission signal is a signal including custom data. Similarly, the duty ratio dd is used to detect that the remote control signal is a signal including a data code.

  A control structure of television 800 will be described with reference to FIG. FIG. 10 is a flowchart showing a procedure of processes executed when television 800 receives a remote control signal.

  In step S1010, control circuit 810 detects reception of a remote control signal based on a signal input from infrared light receiving unit 820. In step S1020, control circuit 810 determines whether or not the duty ratio included in the signal is a duty ratio for a custom code. This determination is made, for example, by comparing the duty ratio acquired from the remote control signal with the duty ratio stored in the memory 812 area. If the duty ratio included in the remote control signal is the duty ratio for the custom code (YES in step S1020), the process proceeds to step S1030. If not (NO in step S1020), the process proceeds to step S1060.

  In step S1030, control circuit 810 confirms that a remote control signal has been transmitted from the remote controller corresponding to television 800. In step S1040, control circuit 810 sets operation of television 800 to a standby state based on the setting corresponding to the custom code included in the remote control signal. Here, the standby state refers to a state in which, for example, the power source of the television 800 is set to ON and another input can be received from the outside.

  In step S1050, control circuit 810 further detects reception of a remote control signal based on a signal input from infrared light receiving unit 820. In step S1060, control circuit 810 determines whether the duty ratio of the header code included in the signal is for a data code. This determination is made, for example, by comparing the duty ratio acquired from the remote control signal with the duty ratio stored in a predetermined area of memory 812. If the duty ratio included in the remote control signal is for a data code (YES in step S1060), the process proceeds to step S1070. If not (NO in step S1060), the process ends. In step S1070, control circuit 810 outputs a command to the inside of television 800 in accordance with the control data included in the data code. Here, the control data refers to, for example, an instruction to increase the volume or data for selecting the designated channel. The command output at this time is a signal for causing each unit (for example, the amplifier circuit 864 or the tuner 860) designated based on the control data to perform a predetermined operation.

  Operations of remote control terminal 100 and television 800 according to the present embodiment based on the above-described structure and flowchart will be described with reference to FIGS.

[First action]
When the user presses a button for selecting a channel on the operation unit 140 of the remote control terminal 100, for example, the pressing is a process performed after a predetermined time has elapsed since the previous operation (step S510). NO), a signal for custom code is generated, and remote control terminal 100 outputs an infrared signal to television 800 (step S430). When television 800 detects reception of a remote control signal (step S1010), since the signal is a custom code signal (YES in step S1020), television 800 performs a predetermined operation (eg, power-on). .

  When remote control terminal 100 then further outputs a data code signal (step S450), television 800 detects reception of the signal (step S1050). Since this signal is a data code signal (YES in step S1060), television 800 performs a predetermined operation (that is, a channel for which channel selection is instructed in remote control terminal 100) according to control data included in the received signal. (Channel selection command) is output (step S1070). Thereby, the television 800 can display the video of the channel designated by the user of the remote control terminal 100.

[Second and subsequent operations]
When the user further operates the operation unit 140 of the remote control terminal 100 to instruct channel selection, the time data stored in the memory 112 of the remote control terminal 100 is read, and the operation (button press) is the previous time. If it is performed within a predetermined time from (YES in step S510), remote control terminal 100 outputs a data code corresponding to the operated button (step S450). That is, in this case, remote control terminal 100 does not transmit a custom code signal to television 800. When television 800 receives a remote control signal from remote control terminal 100 (step S1010), since the signal is a data code signal (NO in step S1020), control circuit 810 includes tuner 860. The channel selection command corresponding to the code is output. As a result, the television 800 selects a channel corresponding to the user's second operation and displays an image on the display 870.

  As described above, according to remote control terminal 100 according to the present embodiment, when a user operation is performed many times within a predetermined time, a custom code for identifying remote control terminal 100 is transmitted. Instead, only the data code signal corresponding to the actual instruction is transmitted. Accordingly, the remote control terminal 100 can shorten the time required for transmitting a signal for controlling a predetermined operation to the television 800, so that the consumption of a battery (not shown) of the remote control terminal 100 can be suppressed. .

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be applied to a remote control terminal capable of transmitting a control signal for remote operation, a television whose operation can be controlled by the signal, a VTR, and other electronic devices.

It is a figure showing the external appearance of the remote control terminal which concerns on embodiment of this invention. It is a block diagram showing the hardware constitutions of the remote control terminal which concerns on embodiment of this invention. It is a figure showing the data structure in the remote control terminal which concerns on embodiment of this invention. It is a flowchart (the 1) showing the procedure of the process which the remote control terminal which concerns on embodiment of this invention performs. It is a flowchart (the 2) showing the procedure of the process which the remote control terminal which concerns on embodiment of this invention performs. It is FIG. (1) for demonstrating the signal output from the remote control terminal which concerns on embodiment of this invention. It is FIG. (2) for demonstrating the signal output from the remote control terminal which concerns on embodiment of this invention. It is a figure showing the hardware constitutions of the television which concerns on embodiment of this invention. It is a figure showing the data structure in the television which concerns on embodiment of this invention. It is a flowchart showing the procedure of the process which the television which concerns on embodiment of this invention performs.

Explanation of symbols

  100 remote control terminal, 102 monitor, 104 movement keys, 106 numeric buttons, 112, 812 memory, 118 buttons, 128 channel buttons, 140 operation unit, 150 timer, 160 infrared light emitting unit, 800 TV, 810 control circuit, 820 infrared light receiving unit , 826 timing circuit, 830 input unit, 860 tuner, 862 synthesis circuit, 864 amplification circuit, 870 display, 872 speaker, 880 image generation circuit.

Claims (10)

An input means for receiving an instruction input from the outside;
Detecting means for detecting a transmission instruction of a signal for controlling the operation of the electronic device specified by the custom code and controlled by the data code based on the input of the instruction;
A first header code represented by a predetermined duty ratio to represent transmission of the custom code based on the transmission instruction; the custom code; and a custom inversion code obtained by inverting the custom code. First generation means for generating a first control signal;
Based on the transmission instruction, a second header code represented by a duty ratio different from the predetermined duty ratio to represent transmission of the data code, the data code, and data obtained by inverting the data code Second generating means for generating a second control signal having an inversion code;
Transmitting means for outputting the generated first control signal and the second control signal as infrared signals;
Time measuring means for detecting the transmission time of the first control signal;
Storage means for storing a transmission time of the first control signal;
If the transmission instruction is newly detected before a predetermined time has elapsed since the transmission of the first control signal, the second control signal is again sent to the second generation means. First control means for generating;
When the transmission instruction is newly detected after a predetermined time has elapsed since the transmission of the first control signal, the first generation unit is caused to generate the first control signal, A remote control terminal comprising: second control means for causing the second generation means to generate the second control signal again. An input means for receiving an instruction input from the outside;
Detecting means for detecting a transmission instruction of a signal for controlling the operation of the electronic device specified by the custom code and controlled by the data code based on the input of the instruction;
First generation means for generating a first control signal having a first header code predetermined to represent transmission of the custom code based on the transmission instruction and the custom code;
Generating a second control signal having a second header code different from the first header code predetermined to represent transmission of the data code and the data code based on the transmission instruction; Two generating means;
Transmitting means for outputting the generated first control signal and the second control signal;
Storage means for storing a transmission time of the first control signal;
Means for detecting a transmission time of the first control signal;
The first control signal and the second control according to the newly detected transmission instruction according to the time from when the first control signal is transmitted until the transmission instruction is newly detected. A remote control terminal comprising transmission control means for controlling signal transmission. The transmission control means includes
If the transmission instruction is newly detected before a predetermined time has elapsed since the transmission of the first control signal, the second control signal is again sent to the second generation means. First control means for generating;
When the transmission instruction is newly detected after a predetermined time has elapsed since the transmission of the first control signal, the first generation unit is caused to generate the first control signal, 3. The remote control terminal according to claim 2, further comprising: a second control unit configured to cause the second generation unit to generate the second control signal again. The first generation means generates the first control signal in which the first header code is represented by a predetermined first duty ratio,
The remote control terminal according to claim 2, wherein the second generation means generates the first control signal in which the second header code is represented by a second duty ratio different from the first duty ratio. The first generation means generates the first control signal having the first header code, the custom code, and a custom inversion code obtained by inverting the custom code,
The second generation means generates the second control signal having the second header code, the data code, and a data inversion code obtained by inverting the data code. Remote control terminal. An electronic device that can be controlled by a remote control signal,
Receiving means for receiving the remote control signal;
From the remote control signal, a first header code represented by a predetermined first duty ratio to indicate transmission of a custom code for specifying the electronic device, the custom code, and the custom code are inverted. First detection means for detecting a first control signal having a custom inversion code,
A second header code represented by a second duty ratio different from the first duty ratio predetermined to represent transmission of a data code for controlling the operation of the electronic device from the remote control signal; Second detection means for detecting a second control signal having the data code and a data inversion code obtained by inverting the data code;
An antenna for receiving broadcast radio waves,
A tuner for selecting a broadcast station specified by the data code from the broadcast radio wave;
A time measuring means for measuring time;
Storage means for storing the time at which the second control signal was detected;
A broadcast station specified by the data code in the tuner when the second control signal is newly detected before a predetermined time elapses after the second control signal is detected. And an electronic device that can be controlled by a remote control signal. An electronic device that can be controlled by a remote control signal,
Receiving means for receiving the remote control signal;
First detection for detecting, from the remote control signal, a first control signal having a predetermined first header code and the custom code to indicate transmission of a custom code for specifying the electronic device Means,
A second header code different from the first header code predetermined to represent transmission of a data code for controlling the operation of the electronic device from the remote control signal, and a second data code. Second detection means for detecting a control signal of
A time measuring means for measuring time;
Storage means for storing the time at which the second control signal was detected;
An electronic device that can be controlled by a remote control signal, comprising: control means for executing a predetermined operation for the electronic device based on at least one of the control signals. The remote control signal includes the first control signal in which the first header code is represented by a predetermined first duty ratio, and the first duty in which the second header code is predetermined. At least one of the second control signal represented by a second duty ratio different from the ratio,
The first detection means detects the first header code represented by the first duty ratio from the remote control signal,
8. The electronic device that can be controlled by a remote control signal according to claim 7, wherein the second detection means detects the second header code represented by the second duty ratio from the remote control signal. The remote control signal includes the first control signal having the first header code, the custom code, and a custom inversion code obtained by inverting the custom code, the second header code, the data code, and the data. And at least one of the second control signal having a data inversion code obtained by inverting the code,
The first detection means detects the first header code from the remote control signal,
8. The electronic device that can be controlled by a remote control signal according to claim 7, wherein the second detection means detects the second header code represented by the second duty ratio from the remote control signal. The electronic device is
An antenna for receiving broadcast radio waves,
A tuner for selecting a broadcast station specified by the data code from the broadcast radio wave,
The electronic device that can be controlled by a remote control signal according to claim 7, wherein the control means causes the tuner to select a broadcasting station specified by the data code.

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