JPH01149525A - Digital audio transmitter and receiver - Google Patents

Abstract

PURPOSE:To improve an operability by executing a remote operation while the reproducing condition of a reproducing device is confirmed by means of a remote operating device. CONSTITUTION:A digital signal recorded from a disk, a tape, etc., is read by a recording signal reading part 1, the subinformation of a tune number, a time, etc., is set to a transmitting part 2, it is converted to an infrared signal, and it is transmitted. By a remote operating device 8, the infrared signal transmitted from a reproducing device 4 is converted, and a subinformation infrared signal is converted to a subinformation electric signal by a receiving part 5. By a display control part 6, the subinformation is converted to a signal for displaying, and the tune number, time, etc., are displayed on a displaying part 7. An operator sends a reproducing control signal to a control circuit 3 and controls the reproducing condition while the operator confirming the display of the tune number, time, etc.

Description

[Detailed Description of the Invention] [Field of Commercial Application] The present invention relates to a digital audio playback device, and is particularly suitable for improving the operability of transmitting and receiving digital audio data using wireless signals for playback. A digital audio transmitter/receiver unit fI! Related to tvc.

[Conventional technology]

A conventional device for transmitting, receiving, and reproducing digitized audio signals is described in detail in t# Publication No. 151140/1983. In the conventional fil, a digital signal is converted into an infrared signal and transmitted,
The receiver converts the infrared signal into an electrical signal, processes the digital signal to correct errors that occur during transmission, converts it into an analog audio signal, drives the speakers, and plays music. was. or,
A remote control device for the transmitting section was provided separately from the receiving section and was designed to control the transmitting section.

[Problem that the invention seeks to solve]

However, when transmitting and receiving digitized audio signals using infrared rays, etc., the receiver is located far from the transmitter, and the user must listen to music near the receiver. (is - numerical,
Selecting songs to play, etc. should be done near the receiver.vc
However, no consideration was given to how to check the current playback song, time, etc., and the operability when performing remote control such as song selection was poor.

The purpose of the present invention is to solve the above-mentioned problems and to provide an easy-to-operate system.
An object of the present invention is to provide a digital audio transmitting/receiving device.

[Means for solving problems]

The above purpose is to display sub-information such as the received song number and time on the remote control device 11rc by displaying the receiving section and display device of the transmission signal by the means for transmitting information such as song number 0 time etc. to the remote control device. This is achieved by

[Effect]

The receiving section B in the remote control device receives sub information such as the track number 9 hours emitted by the playback device using a wireless signal, and displays the display section.
The controller converts the sub-information, such as the curved pipe and time, output from the receiving section, into a display signal, and the display device displays the sub-information, such as the number of a track and the time, in accordance with the output signal of the display controller. Since the user remotely controls the playback device by operating the remote control device while looking at this display, the user can operate the playback device while confirming the current playback status, and the user's operability is improved. very good.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. m
Fig. 1 shows an example in which a ℃ infrared signal is used as a non-transmission means. In FIG. 1, reference numeral 1 denotes a recording signal readout station, 2 a transmitting section that converts sub information into an infrared signal and transmits it, 3 a control circuit for the reading section 1, and 4 a reproducing device. Further, 5 is a receiving section that converts an infrared signal into an electric signal, 6 is a display control device for sub-information, 7 is a display section of sub-1'yt@, and 8 is a remote control device.

The recorded signal reading unit 1 reads from a disk, tape, etc.
Read out the recorded digital signal.

Among the read digital signals, sub information such as track number 0 time is sent to the transmitter 2, where it is converted into a °C and infrared signal.
Sent. The remote control device 8 receives the infrared signal transmitted from the playback device 4, and the receiving section 5 receives the sub information infrared signal.
Convert sub information to electrical signal. The display control device 6 converts the sub information into a display signal and displays the song number, hour, etc. on the display section 7.
to be displayed. The operator sends a playback control signal to the control circuit 5 of the playback device 40 while checking the display of the track number 1 hour, etc. on the remote control device 8, and as described above, according to the present invention, the playback device while checking the playback status using a remote control device located far from the playback device.
This has the effect of being able to control the playback state of the playback device and providing good operability for the user.

Another embodiment of the present invention will be briefly described with reference to FIG. FIG. 1 shows a recorded signal reading section, 2 a transmitting section 5 for converting an electric digital signal into an infrared signal and transmitting it, a reading section 10 control section, and 4 a recording signal reproducing device. or,
5 is a receiving unit that converts the transmitted infrared signal into an electrical digital signal; 6 is a signal processing unit that demodulates the audio signal and sub information from the digital signal; 7 is a sub information display unit; and 8 is a remote control unit for the control unit 5. An operating device, 10 is an infrared digital signal, 11 is an infrared controller M1N, L and FL are L-channel audio signals and R-channel audio signals, respectively.

It is a dio signal.

A recording signal output unit 1 reads out recorded digital signals from a recording medium such as a disk or tape. The read digital signal is converted from an electric signal into an infrared signal for spatial transmission in the transmitting section 2.degree. C. and is emitted from the reproducing device 4. In the receiving device t9, the infrared signal emitted from the reproducing device 4 is received by the receiving section 5 and converted into an electrical signal, and the digital signal converted into the electrical signal is processed by the signal processing section 6iC. . The signal processing section 6 separates the main information music signal in the digital signal from the sub information such as song number and time. The main information music signal detects and corrects errors that occur during reading from the recording medium or during transmission from the playback device 4 to the receiving device 9), L-channel, R-channel. to play analog music signals. Similarly, after detecting errors in the sub information, it is sent to the display s7.

The display section 7 displays sub information such as song number and time. At this time, the playback status of the playback device 4 is displayed on the display section 7. The user operates the remote control device 8 to control the playback device 40 while checking the display content on the display section 7.
By sending an infrared control signal to the control section 5 and operating the recorded signal reading section 1, it is possible to select the song number and time to be read.

As described above, according to the present invention, the playback state of the playback device can be controlled while checking the playback state of the playback device using a remote control device located far from the playback device, and the user can easily operate the playback device. .

Next, another embodiment of the present invention will be described using FIG. 5. This example describes how the present invention can be used as a compact disc (CD).
Play back the signals recorded on the disc according to the format. It is adapted for CD players. FIG. 5 shows a remote control device that reads recorded signals from a CD using the playback device 4, transmits them using infrared rays, and receives and processes the transmitted infrared axis signals. Components with the same numbers as in FIG.
and 0, and 15 is an EFM (Eight.

14 is an error detection and correction interpolation circuit for data after demodulation; 15 is a digital-to-analog converter (D/A converter);
1b-L and 16-R are sample-and-hold circuits for the output of the D/A converter, 17-L and 17-R are low-pass filters (LPFs) that cut off high-frequency noise components for the sample-and-hold circuit outputs, and 18 is an EFM Included in the signal. Song number 9
This is a display control unit that displays information such as time.

K played back from the disk, modulated by infrared rays, and transmitted
The PM signal is received by the receiving section 5 and sent to the data identification circuit 1.
2, the EFMFM signal tuning circuit 1 determines 1 and 0.
5EFMfi It is returned to the PGM data before Taimae. The PCM data includes music information as main information and track number, performance time, etc. as sub information.

The error detection and correction interpolation circuit receives the main fIf information as input, performs error detection and correction for one hour, and sends the corrected and interpolated information to the L-channel and R-channel by the D/A i converter 15. Converts the audio signals of the channels alternately to analog signals. Sample hold circuit 16-L, 16-
R is alternately output to the D/A converter output. Sample and hold L-channel and R-channel analog signals,
An analog audio signal is output via the LPFs 17-L and 17-R.

On the other hand, the display control circuit 18 controls the display unit 7 by inputting sub information such as the song number and playing time, and displays the song number currently being played and the playing time during disk playback. Further, when the disc reproduction is stopped, the total number of times, total time, etc. recorded on the disc are displayed. By displaying the disc playback status of the playback device 4 on the remote control device 8 in this way, the user can easily know the track number and time being played back on the remote control device even if the CD player is far away. You can remotely control the song you want to select next while checking the currently playing song number and time.
Only the disc playback part of the CD player has an indicator.℃
This has the effect of improving operability compared to the case where the

Next, another embodiment of the present invention will be described using FIG. 4. FIG. 4 shows an example of implementation of the display control unit 1B, in which the same components as those in FIG. 21 is song number time data (Q, code), and 22 is an error detection flag for the song number time data. The Q code containing the track number time data is constructed by collecting 98 bits of data, one bit for every 264 playback bits. This 98-bit Q code Q code detection circuit 19
Detected from iC, further detected error in lCQ code
The display determining unit 201C sends the song number 0 hour data 21 in the code and a flag 22 indicating its error state. Display discrimination section 2
0, the track number time data only when the error 7 lag 22 is not an error is sent to the display unit 7, and if it is an error, the immediately previous value is displayed. As described above, according to the present embodiment, there is an advantage that even if the song number and time information is erroneously transmitted, abnormal song number and time information will not be displayed.

In the above embodiments of the present invention, a case has been described in which transmission is performed using an infrared thin signal as a wireless transmission sub-actor, but the same effect can be obtained even if transmission is performed using radio waves other than at the infrared edge.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to remotely control the playback device while checking the playback status of the playback device using the remote control device, which has the effect of providing very good operability for the user.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, FIG. 21 is a block diagram of another embodiment, and FIG. FIG. 4 is a block diagram of still another embodiment. 64... Reproduction device, 6... Signal processing unit, 7... Display unit, 8... Remote control unit, 18... Display Control unit, 19...Q code detection circuit, 20... Display discrimination unit. 1st momme

Claims (1)

[Claims] 1. A playback device comprising a signal readout unit that reads out a signal recorded on a recording medium by digitally modulating an audio signal and sub information such as track number and time, and a control circuit that controls the position of the readout unit, and the control circuit. A digital audio device comprising a remote control device that sends control commands to a circuit, wherein the playback device includes a transmitter that converts the sub information into a wireless transmission means and transmits the converted information, and a transmitter of the playback device that connects the remote control device with the transmitter. The present invention further includes a receiving section that receives the transmitted wireless transmission means, a display control section that converts the output information of the receiving section into a display signal, and a display device that displays the sub-information under the control of the display control section. A digital audio transmitter/receiver with special features.