JP2001358965A - Remote control system for electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control system for an electronic device with which a user can view character information at hand. SOLUTION: A television receiver is provided with a transmission circuit that wirelessly transmits information including at least character information. A remote control transmitter 200 is provide with a reception circuit 230 that receives information sent from the transmission circuit, a demultiplexer circuit 235 that extracts the character information from the information received by the reception circuit 230 according to identification data attached to the received information, and LCD 242. The LCD 242 displays the character information extracted by the demultiplexer circuit 235.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a remote control system for electronic equipment.

[0002]

2. Description of the Related Art Some television stations broadcast textual programs in addition to video and audio programs. In the broadcast of the text program, character information data is transmitted in the 14th to 16th and 21st horizontal periods of the vertical blanking period of the video signal. In this case, the character information includes information related to the television program being broadcast and information independent of the television program being broadcast.

[0003] Therefore, if a television receiver having a function of receiving a text program is prepared, it is possible to know a speech in a drama being broadcast by text or to see a weather forecast.

Some FM broadcasting stations also carry out FM text multiplex broadcasting, multiplexing text information data into audio signals and transmitting them. Therefore, in the FM receiver supporting the FM teletext broadcasting, the name of the music being broadcast can be known, or the news or weather forecast can be known.

[0005] Further, in the CD, which adopts a standard called "CD text", data of additional character information of the CD is recorded on a track in a lead-in area. Therefore, the CD player can display a song name, an artist name, and the like by using the character information.

[0006]

However, when a weather forecast or the like is displayed on the television screen, aside from those who are watching the weather forecast, the weather forecast and the like are not displayed for those who are watching the TV together. Is disturbed.

When listening to music or the like indoors using an FM receiver or a CD player, the user usually listens away from the FM receiver or the CD player. Even if the character information is displayed on the player, the displayed character information becomes difficult to see.

The present invention is to solve such a problem.

[0009]

According to the present invention, in a remote control system having, for example, an electronic device and a transmitting device for remotely controlling the electronic device by radio, the electronic device includes at least information including character information. A transmitting circuit that wirelessly transmits the information, the transmitting device includes: a receiving circuit that receives the information transmitted from the transmitting circuit; and a transmitting circuit that adds the received information among the information received by the receiving circuit. A remote control system for an electronic device, comprising a take-out circuit for taking out the character information in accordance with the identification data and a display, wherein the character information taken out by the take-out circuit is displayed on the display. It is. Therefore, the character information obtained in the electronic device is displayed on the remote-controlled transmitting device.

[0010]

1 and 2 show an example in which the present invention is applied to a television receiver and a wireless remote control (remote control) transmitter thereof.
Is the television receiver, and reference numeral 200 is the remote control transmitter. In this example, the transmitter 200 is of an infrared type.

In the television receiver 100, a radio wave of a television broadcast is received by an antenna 111, and the received signal is supplied to a receiving circuit 112 to select a target channel, and a color video signal of the channel and The composite audio signal is demodulated and extracted.

Then, the color video signal is supplied to a video circuit 113, and a video signal for display is color-demodulated, and the video signal is supplied to a color display, for example, a color CR.
It is supplied to T114. Therefore, the color image of the target channel is displayed on the CRT 114.

A composite audio signal obtained from the receiving circuit 112 is supplied to an audio circuit 115 to extract a predetermined audio signal, and the audio signal is supplied to left and right channel speakers 116L and 116R. In this case, the audio signal extracted from the audio circuit 115 includes a monaural audio signal (for monaural broadcasting), left and right channel audio signals (for stereo broadcasting),
Alternatively, it is one of a main audio signal and a sub audio signal (for bilingual broadcasting or the like).

Further, a color video signal obtained from the receiving circuit 112 is supplied to a character decoder circuit 117 to separate and extract character information data, and the character information data is supplied to a video circuit 113.

At this time, for system control,
A microcomputer 121 is provided, and various operation keys (operation switches) 122 are connected to the microcomputer 121. When the operation key 122 is operated, the microcomputer 121 receives the signal from the receiving circuit 112 and the video circuit 1 according to the operation.
13, control signals are supplied to the audio circuit 115 and the character decoder circuit 117, respectively, to switch channels,
On / off of the display of the text program, switching of the audio signal, switching of the text program, and the like are executed.

As a remote control receiving means corresponding to the remote control transmitter 200, an infrared light receiving element 123 and a receiving circuit 124 to which an output signal is supplied are provided.
Then, the reception data of the remote controller is taken out from the reception circuit 124, the data is supplied to the microcomputer 121, and the same processing as when the key 122 is operated is executed.

Further, the television receiver 100 transmits character information and audio signals to the remote control transmitter 20 by infrared rays.
A transmission circuit 130 for transmitting to 0 is provided.

That is, in the transmission circuit 130, the data of the character information from the character decoder circuit 117 is supplied to the encoder circuit 131 and converted into character information data DCHR which has been encoded for error correction. DCHR is supplied to the multiplexer circuit 132.

The audio signal from the audio circuit 115 is
The digital audio data is supplied to the A / D converter circuit 133 and A / D converted into digital audio data. In this case, the audio signal supplied from the audio circuit 115 to the A / D converter circuit 133 is a monaural audio signal (for monaural broadcasting),
Either the left and right channel audio signals (for stereo broadcasting) or the main audio signal and the sub audio signal (for bilingual broadcasting, etc.). Also, as an example, the sampling frequency at the time of A / D conversion is 44.1 kHz,
The number of quantization bits is 16 bits.

Then, the digital audio data is supplied to an encoder circuit 134 to be digital audio data DDAD which has been subjected to an encoding process for error correction using, for example, a Reed-Solomon code, and the digital audio data DDAD is supplied to a multiplexer circuit 132. Is done.

In the multiplexer circuit 132, the character information data DCHR and the digital audio data DDAD supplied thereto are packetized, and, as shown in FIG. , Digital audio data DDAD
And a digital signal SMPX in which packets are alternately arranged. At this time, at the beginning of each packet,
An identification code ID indicating whether the data included in the packet is digital audio data DDAD or character information data DCHR is provided.

The signal SMPX is applied to the modulation circuit 135.
Is supplied to the D-QPSK signal, for example.
The QPSK signal is supplied to a D / A converter circuit 136 and D / A converted to an analog D-QPSK signal. The D-QPSK signal is supplied to an infrared light emitting element, for example, an infrared LED 138 via an amplifier 137. Therefore, infrared rays having the signal SMPX are output from the infrared LED 138.

On the other hand, in remote control transmitter 200,
A microcomputer 221 is provided as a control circuit, and various operation keys (operation switches) 222 are connected to the microcomputer 221. When the operation key 222 is operated, the microcomputer 221 is operated.
Outputs data corresponding to the operated key. The data is supplied to a transmission circuit 223 and converted into a predetermined transmission signal. The transmission signal is supplied to an infrared light emitting element, for example, an infrared LED 225 via an amplifier 224. .

Therefore, from the infrared LED 225,
When the operation key 222 is operated, a corresponding infrared ray is output. And, as described above, in the television receiver 100, the infrared rays are
The light is received by the microcomputer 23 and the microcomputer 122 executes the same processing as when the key 122 is operated. Therefore, when the key 222 of the transmitter 200 is operated, the channel is switched, the display of the text program is turned on / off, the audio signal is switched, and the text program is switched in the same manner as when the operation key 122 of the television receiver 100 is operated. And so on.

Further, the remote control transmitter 200 is provided with a receiving circuit 230 corresponding to the transmitting circuit 130. That is, the infrared light from the infrared LED 138 is received by the infrared light receiving element 231 to extract a D-QPSK signal, and this signal is supplied to the A / D converter circuit 233 through the amplifier 232 to be a digital D-QPSK signal. This signal is supplied to the decoder circuit 234, and the multiplex signal SMPX is decoded. Then, the signal SMPX is supplied to the demultiplex circuit 235, and is separated and extracted into character information data DCHR and digital audio data DDAD according to the identification code ID.

The digital audio data D
The DAD is supplied to a decoder circuit 236 to perform decoding processing such as error correction. The digital audio data DDAD after this processing is supplied to a D / A converter circuit 237 and D / A converted into an analog audio signal. The signal is passed through the amplifier 238, for example, the earphone 239
L, 239R.

At this time, according to the operation of the key 222, the microcomputer 221 sends the signal to the amplifier 238.
When the broadcast audio received by the receiving circuit 112 is a stereo broadcast, switching between stereo and monaural is performed, and when the broadcast audio is bilingual, a main audio signal and a sub audio signal are selected. .

Further, the character information data DCHR separated by the demultiplex circuit 235 is supplied to a decoder circuit 241, where decoding processing such as error correction is performed, and the processed character information data DCHR is sent to the microcomputer 221. This is supplied to form a display signal, and this display signal is supplied to a display, for example, an LCD 242 to display character information. This character information is also selected according to the operation of the operation key 222.

Thus, according to the above-described system, it is possible to display the character information of the character program on the transmitter 200 of the remote controller. Therefore, for example, the television receiver 1
On the CRT 114 of 00, dramas etc. are displayed normally,
The weather forecast and the like can be displayed on the remote control transmitter 200, and the display of the weather forecast does not disturb the viewer of the drama. In addition, since the character information is displayed on the remote controller transmitter 200 at hand, the displayed character information is easy to see.

Further, the speaker 1 of the television receiver 100
The main sound can be output from 16L and 116R, and the sub sound can be output from the earphones 239L and 239R of the remote control transmitter 200. Moreover, at this time, since the transmitter 200 is made wireless, the code is not entangled and the usability is good.

In the above description, the present invention is applied to the television receiver 100 and the remote control transmitter 200 thereof. For example, if the present invention is applied to the FM receiver, the CD player and the remote control transmitters thereof, the Is F
Even when the user is away from the M receiver or the CD player, character information in FM text multiplex broadcasting or CD text can be easily viewed.

Further, the present invention can be applied to a VTR and its remote control transmitter to display a channel and a time when a timer is set for recording. In the case of a personal computer, a wireless connection is established between the personal computer and its full keyboard as described above, the name of the file being processed is displayed on the full keyboard, or the Internet is used. At times, the URL of the connected Web page (so-called homepage) can be displayed on the full keyboard.

[List of abbreviations used in this specification] A / D: Analog to Digital CD: Compact Disc CRT: Cathode Ray Tube D / A: Digital to Analog D-QPSK: Differential QPSK FM: Frequency Modulation LCD : Liquid Crystal Display LED: Light Emitting Diode QPSK: Quadrature Phase Shift Keying URL: Uniform Resource Locator VTR: Video Tape Recorder Web: World Wide Web Amplifier: Amplifier TV: Television Bit: binary digit Remote control: Remote Control

[0034]

According to the present invention, it is possible to display character information on a transmitter of a remote controller and output sound.

[Brief description of the drawings]

FIG. 1 is a system diagram illustrating one embodiment of the present invention.

FIG. 2 is a system diagram illustrating one embodiment of the present invention.

FIG. 3 is a diagram for explaining the present invention.

[Explanation of symbols]

100 television receiver, 111 antenna, 112 receiving circuit, 113 video circuit, 114 color CRT, 1
15 audio circuit, 116L and 116R speaker
117: character decoding circuit, 121: microcomputer, 122: operation keys, 123: infrared light receiving element, 1
24 reception circuit, 130 transmission circuit, 131 encoder circuit, 132 multiplexer circuit, 133 A / D
Converter circuit, 134 encoder circuit, 135 modulation circuit, 136 D / A converter circuit circuit, 137
Amplifier, 138 infrared LED, 200 remote control transmitter, 221 microcomputer, 222 operation key, 223 transmission circuit, 224 amplifier, 225 infrared LED, 231 infrared light receiving element, 232 amplifier
233 ... A / D converter circuit, 234 ... demodulation circuit, 2
35 ... demultiplexer circuit, 236 ... decoder circuit,
237 ... D / A converter circuit, 238 ... Amplifier, 23
9L and 239R: Earphone, 241: Decoder circuit, 242: LCD

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 9/00 301 361 F-term (Reference) 5C025 AA28 AA29 BA25 BA30 DA05 5C056 AA05 BA01 CA06 CA13 CA19 DA06 DA11 DA20 5C063 AB01 AC01 AC05 AC10 CA23 DA03 DA13 DB02 EA01 EB03 EB27 5K048 AA14 BA03 DB04 EB07 EB14 FB01 FB11 FB15 HA04 HA06 HA11 HA23

Claims (2)

[Claims] 1. A remote control system having an electronic device and a transmitting device for remotely controlling the electronic device, wherein the electronic device has a transmitting circuit for transmitting at least information including character information by wireless. A transmitting circuit for receiving the information transmitted from the transmitting circuit; and transmitting the character information in accordance with identification data added to the received information among the information received by the receiving circuit. A remote control system for an electronic device, comprising: a take-out circuit for taking out; and a display, wherein the character information taken out by the take-out circuit is displayed on the display. 2. The remote control system according to claim 1, wherein said transmission circuit wirelessly transmits voice information together with said character information, and said transmission device is added to said voice information by said extraction circuit. A remote control system for an electronic device which extracts the audio information according to the identification data and outputs the extracted audio information.