JP2000207839A - Equipment for recording and reproducing digital data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable not only music data but also additional data to be recorded to a digital recording device from a receiver by providing a digital voice data output device and a digital signal output device of additional data in a digital broadcasting receiver. SOLUTION: A system control section 19 controls the system so that, when broadcast is received by a digital broadcasting receiver 1, video voice data are restored by a decoder 16, a digital signal is outputted as a digital voice signal output 20 and the name of music, player, and the like are outputted as additional information output 23. Further, an additional information input device 33 by which this additional information is inputted to MD 2 as data is provided. When the digital voice data output device 20 of the digital broadcast receiver 1 and a digital voice data input device 30 of the MD 2 are connected and the additional information output 23 of the digital broadcasting receiver 1 and the additional information input device 33 of the MD 2 are connected, digital voice data can be recorded, while additional information also can be automatically inputted to the MD 2 and recorded. Thus, a troublesome work that additional information is inputted after recording music data can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing system for digital data, and more particularly to a recording / reproducing apparatus for data distributed using digital broadcasting as a medium.

[0002]

2. Description of the Related Art With the recent development of digital transmission technology and the like, so-called digital broadcasting, in which a plurality of digitized programs can be transmitted on one analog signal transmission channel, is being promoted. Regarding digital broadcasting using satellites, see the Technical Report of the Institute of Television Engineers of Japan (vol.19.No.42) published on September 21, 1995, `` Overview of CS Digital Broadcasting System '' on pages 25 to 30, and Nikkei Electronics 1996 9
It is described in a paper on January 2, p. 149, "Japan's First Digital Satellite Broadcasting to Realize Nearly 70 Multi-Channels."

[0003] Digital transmission of cable television is described in the Telecommunications Society of Japan Technical Report (vol.19. System digital cable television broadcast transmission experiment ". According to these reports, digital video and audio signals are compressed and transmitted by a compression / decompression technique called MPEG2 (MPEG-2), so that the frequency band of one analog channel is equivalent to the frequency band of several channels. Data can be multiplexed for efficient transmission. Various broadcasting services are being considered utilizing this advantage. Delivery of audio data such as music broadcasts is one of them.

On the other hand, recording apparatuses for music information have also been digitized prior to the broadcasting system. DAT (Digital Audio Tape Recorder) using magnetic tape as recording medium, CD (Compact Disc) using optical disc,
An MD (mini disk) using a magneto-optical disk has been put to practical use. In particular, a magneto-optical disk recording / reproducing device has a small shape and a recording / reproducing method based on a random access-based recording / reproducing method.
Widespread. Regarding the MD recording / reproducing method,
No. 5-325508 and `` M '' published by Dempa Shimbun on August 31, 1998
All of D ”and so on.

[0005]

In the above technique,
A digital broadcast receiver may be provided with an optical digital signal output for outputting digital data of a music broadcast, for example. In such a case, the digital broadcast receiver can directly input and record to a digital recording device such as an MD. Therefore, it is possible to perform recording with less deterioration in signal quality as compared with a case where a receiver converts a digital signal into an analog signal and outputs the converted signal, and a recording device converts the analog signal into a digital signal and records.

[0006] In music broadcasting, information such as a song title and a performer is also broadcast as information in a program, and a digital broadcast receiver is used for a program guide or the like. However, in the conventional MD recording method, such information is recorded in an area different from the music data, and it is assumed that the user inputs the information using the MD key. Since the information is temporarily stored in the memory, the recording of the music data is completed, and the information is recorded on the recording medium when the power is turned off or when the recording medium is taken out, the information cannot be directly output from the receiver to the MD. For this reason, the user who has recorded the music data has to perform a complicated operation of recording the title of the recorded music and the like, and then inputting the data one by one by operating the MD key.

An object of the present invention is to provide a method and an apparatus capable of recording not only music data but also additional information such as a song title and a player name from a digital broadcast receiver into a digital recording device.

[0008]

In order to solve the above-mentioned problems, the present invention provides a digital broadcast receiver with a function of outputting additional information such as a received and restored tune name and performer name, and a MD. , A function of inputting additional information, a function of storing information in a memory, and a function of recording information on a recording medium.

As another means, a digital broadcast receiver has
A function of outputting the additional information from the optical digital signal output, and a function of outputting a trigger for notifying the timing when outputting the additional information, and a function of inputting the trigger to the MD, When the content of the present optical digital signal is additional information, a function of switching the transmission destination to the case of music information, a function of storing the additional information in a memory, and a function of recording the additional information on a recording medium are provided.

As another means, the digital broadcast receiver is provided with a function of outputting the additional information from the optical digital signal output in association with the program content and a function of notifying a viewer of the timing of outputting the additional information. , MD,
A function for inputting a timing at which additional information is input from the optical digital signal, a function for switching the transmission destination to music information when the content of the optical digital signal being input is additional information, and an additional information Is provided in the memory and in the recording medium.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of the present invention. In the figure, 1 is a digital broadcast receiver, 2 is an MD, 10 is a broadcast receiving antenna, 11 is a tuner, 12 is a demodulation unit, 1
3 is a transmission line error correction unit, 14 is a descrambling unit, 1
5 is a demultiplexer, 16 is an MPEG decoder, 17 is an audio signal processor, 18 is a video signal processor, 19 is a system controller, 20 is digital audio data output, 21 is analog audio signal output, and 22 is video signal output. , 23 are additional information outputs, 30 is digital audio data input, 31 is analog audio input, 32 is analog audio output, 33 is additional information input, 34 is a sampling rate converter, 35 is an AD converter, 36 is a DA converter, 37 Is an encoder, 38 is a decoder, 39 is a memory control unit, 40 is a memory, 41 is an encoder, 42 is a decoder, 43 is an address decoder, 44 is a head drive unit, 45 is a magnetic head, 46 is an amplifier, and 47 is a servo control unit. , 48 are disk drives, 4
9 is an optical pickup, 50 is a system control unit, 51 is a key input, and 52 is a display unit.

A basic configuration of the digital broadcast receiver 1 will be described. A channel desired to be received is selected by a tuner 11 from signals received by an antenna 10, and a demodulation unit 12
Demodulates with. QP for digital satellite broadcasting using communication satellites
Since SK (Quadrature Phase Shift Keying) is used, a QPSK demodulation unit is used for the demodulation unit 12. After demodulation, the error of the data generated in the transmission path is corrected by the error correction unit 13, the descrambling is canceled by the descrambling unit 14 based on the viewing contract, and the desired program is selected from a plurality of programs multiplexed on one channel. Extracted by the demultiplexer 15, video and audio data are restored by the MPEG decoder 16,
The audio signal is subjected to decoding processing for other encoding, conversion to an analog signal, and the like in the audio signal processing unit 17. A digital signal is output from a digital signal output 20, and a signal converted to an analog signal is output from an analog signal output 21. I do.

The video signal is converted by a video signal processing section 18 into an analog signal suitable for a connected receiver and output from a video signal output 22. For example, the output to the NTSC signal television is in the video signal processing unit 18 and is converted and output by a so-called NTSC encoder that converts digital video data into an NTSC signal. The operation and cooperation of each unit are controlled by the system control unit 19.

Next, the basic configuration of the MD 2 will be described. There are two inputs, a digital audio data input 30 and an analog audio input 31. The signal from the analog audio input 31 is converted into a digital signal by sampling by the AD converter 35. The signal from the digital audio data input 30 is converted by the sampling rate converter 34 into a data frequency (sampling frequency) of 44.1 kHz used in MD2. The sampling frequency differs depending on the device. For example, 48 kHz or 32 kHz is used in DAT or satellite broadcasting, so it is necessary to convert the sampling frequency. The digital audio data is input to an encoder 37, which performs data compression such as deleting data of a part which cannot be perceived due to human auditory characteristics. After that, the memory control unit 39 stores information on the area where data is recorded, recording date and time, and the like in the memory 40.

In the MD recording / reproducing method, information of recorded data is managed using an area called UTOC (user table of content). In addition to the basic information such as the address information of the track of the recorded data on the magneto-optical disk and the address information of the free area of the disk, the title of each recorded song and the name of the player can be recorded. The encoder 41 performs processing such as data conversion and addition of an error correction code suitable for recording and reproduction on the magneto-optical disk.
From the magnetic head 45 to the magneto-optical disk.

For reproduction, a recording signal is read by an optical pickup 49 whose position is controlled by a servo control unit 47 and a driving unit 48 based on recorded UTOC information and information from an address decoder 43, and is amplified by an amplifier 46. In order to prevent the occurrence of so-called skipping in which reproduction is interrupted due to vibration during reproduction, processing such as temporarily storing data in a temporary memory 40 is performed by a memory control unit 39, and a decoder 38 for the encoder 37 And output from the analog audio output 32 through the DA converter 36. The whole control is performed by the system control unit 50. The key input 51 is for writing UTOC information and operating the device. The display unit 52 displays UTOC information, device status, and the like.

Next, the configuration of the portion according to the present invention will be described.
When the digital broadcast receiver 1 receives a music broadcast, additional information such as a song title and a performer is also broadcast as information in the program,
Digital broadcast receivers are used for program guides.
Additional information output 23 for outputting the additional information as data
Is provided. Further, the MD 2 is provided with an additional information input 33 for inputting the additional information as data. As shown in the figure, the digital audio data output 20 of the digital broadcast receiver 1 is
And MD2 digital audio data input 30, and additional information output 23 of digital broadcast receiver 1 and additional information input 3 of MD2
3 allows the user to record digital audio data, and also to automatically input and record additional information to the MD2. The user inputs the additional information using the key input 51 of the MD2 after recording the music data as in the related art. Can be eliminated.

Next, another embodiment is shown in FIG. In the figure, portions having the same functions as those of the embodiment shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. 24 is a trigger signal output for additional information, 53 is a trigger signal input for additional information, and 54 is a switching unit. In the present embodiment, the digital broadcast receiver 1 multiplexes the additional information with the digital audio data on the time axis and outputs the digital audio data. That is, after outputting the audio data, the additional information is output continuously, and thereafter the audio data is output continuously. Here, in the case of music broadcasting, the additional information is output immediately after each song is broadcast. The digital broadcast receiver 1 outputs a trigger signal from the additional information trigger signal output 24 at the end of each song.

In the MD 2, using the trigger signal input from the additional information trigger signal input 53, the output of the switching unit 54 is switched by the system control unit 50, the additional information is fetched into the system control unit 50, and the memory control unit 39. And stored in the memory 40 as information associated with the recorded audio data. The method of recording this information on the magneto-optical disk is the same as the above-described conventional MD method.

As described above, in the present embodiment, similarly to the above-described embodiment, digital audio data can be recorded, and additional information can be automatically input and recorded in the MD2. MD after recording data
The complexity of inputting additional information using the second key input 51 can be eliminated. Further, since the signals transmitted through the additional information trigger signal output 24 and the additional information trigger signal input 53 are simple trigger signals, there is an advantage that the load on the processing capability of the system control units 19 and 50 is small. Furthermore, since the trigger signal is relatively low-speed data, there is an advantage that it is not necessary to consider matching or shielding as in the case where a high-frequency signal is used for a connector or an internal wiring, and a simple configuration can be achieved.

Next, another embodiment is shown in FIG. In the figure, portions having the same functions as those of the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, similarly to the embodiment shown in FIG. 2, the digital broadcast receiver 1 multiplexes the additional information on the digital audio data on the time axis and outputs it. The viewer is made to recognize the timing of sending the additional information in the program being broadcast. Specifically, the start and end of the program are reported by the audio in the program, an indicator is provided in the digital broadcast receiver 1 and the program data distributed is used to notify the start and end times of the music by the indicator.
There is a method such as displaying on the TV screen using an OSD (On Screen Display) function to notify the user.

Among the viewers who recognize that the additional information is output by these methods, a viewer who desires to record the additional information is provided in the MD 2 and performs a key input for recording the additional information. In MD2, using the input from the key input 51,
The output of the switching unit 54 is switched from the system control unit 50, the additional information is taken into the system control unit 50, and stored in the memory 40 as information associated with the recorded audio data through the memory control unit 39. The method of recording this information on the magneto-optical disk is the same as the above-described conventional MD method.

As described above, also in the present embodiment, similarly to the above-described embodiment, digital audio data can be recorded, and additional information can be automatically input and recorded in the MD2. MD after recording data
The complexity of inputting additional information using the second key input 51 can be eliminated. Also, in order to switch the switching unit 54 by operating the MD2 key, the digital broadcast receiver 1 and MD2 are provided with the additional information output and its input shown in FIG. 1 and the additional information trigger signal output and its input shown in FIG. There is no need, and the configuration is simplified. There is also an advantage that the viewer can select whether or not to record the additional information.

In the embodiment described above, the case where the analog audio output 32 is provided in the MD 2 has been described. However, even if a digital data output is provided, the effect of the present invention is not changed, and additional information is recorded by the present invention. When data is transferred from a magneto-optical disk to another magneto-optical disk, there is an advantage that there is no conversion to an analog signal, so that there is no deterioration in the data and that additional information can be transferred together.

The present invention has a wide variety of applications. For example, by adding additional information for advertisement together with the audio data and broadcasting it, the additional information is automatically added according to the present invention.
MD played by the user for the user recorded on the MD
Can be displayed on the display unit, and the advertisement effect can be obtained for the program supply side. There is also a method in which the delivery of the additional information is made a paid service and the user is charged.

[0026]

According to the present invention, when digital audio data is recorded on a MD from a digital broadcast receiver, the digital audio data can be recorded, and additional information such as a song name and a performer's name are automatically recorded on the MD. It is possible to input and record, and it is possible to eliminate the trouble of the user to input the additional information using the MD key input after recording the voice data as in the related art.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a digital data recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a digital data recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a digital data recording / reproducing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Digital broadcast receiver, 2 ... MD, 10 ... Broadcast reception antenna, 11 ... Tuner, 12 ... Demodulation part, 13 ... Transmission path error correction part, 14 ... Scramble descrambling part, 15 ... Demultiplexing part, 16 ... MPEG Decoder, 17 ... Audio signal processing unit, 1
8: video signal processing unit, 19: system control unit, 20: digital audio data output, 21: analog audio signal output,
22: video signal output, 23: additional information output, 30: digital audio data input, 31: analog audio input, 32 ...
Analog audio output, 33 additional information input, 34 sampling rate converter, 35 AD converter, 36 DA converter, 37 encoder, 38 decoder, 39
Memory control unit, 40: memory, 41: encoder, 42
... Decoder, 43 ... Address decoder, 44 ... Head drive unit, 45 ... Magnetic head, 46 ... Amplifier, 47 ... Servo control unit, 48 ... Disk drive unit, 49 ... Optical pickup, 50 ... System control unit, 51 ... Key input 52, a display unit; 24, a trigger signal output for additional information; 53, a trigger signal input for additional information; 54, a switching unit.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ikuo Murata 216 Yoshidacho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term in the AV Division of Hitachi, Ltd. 5D044 AB06 BC06 CC04 DE49 EF05 GK12 HL11

Claims (14)

[Claims] 1. A receiver for receiving a broadcast including audio data and data attached to the audio data, comprising: a digital audio data output; and a digital signal output of information associated with the audio data. Equipment related to digital data recording and playback. 2. An apparatus for recording and reproducing digital data, comprising a digital audio data input and a digital signal input of information attached to the digital audio data. 3. A receiver for receiving a broadcast including audio data and data attached to the audio data, comprising: a digital audio data output; and a digital signal of information attached to the audio data at the digital audio data output. And a trigger signal output indicating a point in time at which a digital signal of information accompanying the audio data is output. 4. A device capable of recording and reproducing digital data, comprising: a digital audio data input; a switching unit capable of switching the transmission destination of the digital audio data input to two systems; and a switching time point of the switching unit. An apparatus for recording and reproducing digital data, comprising a trigger signal input. 5. A receiver for receiving a broadcast including audio data and data attached to the audio data, comprising: a digital audio data output; and a digital signal of information attached to the audio data at the digital audio data output. A device for recording and reproducing digital data, wherein the device has a function of multiplexing and outputting a time axis. 6. An apparatus capable of recording and reproducing digital data, comprising: a digital audio data input; a switching unit capable of switching a transmission destination of the digital audio data input to two systems; and a switching unit capable of controlling switching of the switching unit. A device for recording and reproducing digital data, comprising a key input. 7. A receiver for receiving a broadcast including audio data and data attached to the audio data, wherein the receiver outputs a digital signal of the audio data and a digital signal of data attached to the audio data. Equipment related to digital data recording and playback. 8. An apparatus for recording and reproducing digital data, wherein the apparatus is capable of recording and reproducing digital data, and inputs a digital signal of audio data and a digital signal of data attached to the audio data. 9. A receiver for receiving a broadcast including audio data and data attached to the audio data, comprising: means for outputting a digital signal of the audio data; and a digital signal of the data attached to the audio data. A device for recording / reproducing digital data, characterized by comprising means for outputting the data. 10. A recording / reproducing apparatus for recording / reproducing digital data, comprising: means for inputting a digital signal of audio data; and means for inputting a digital signal of data accompanying the audio data. Equipment related to digital data recording and playback. 11. A receiver for receiving a broadcast including audio data and data accompanying the audio data, wherein the receiver multiplexes and outputs a digital signal of the audio data and a digital signal of the data incidental to the audio data. And a means for outputting a signal indicating a timing at which a digital signal of data accompanying the audio data is output. 12. A recording / reproducing apparatus for recording / reproducing digital data, comprising: means for inputting a digital signal; switching means for switching a transmission destination of the input digital signal;
An apparatus related to digital data recording / reproduction, further comprising means for inputting a signal indicating a switching timing of the switching means. 13. A receiver for receiving a broadcast including audio data and data attached to the audio data, wherein the receiver multiplexes and outputs a digital signal of the audio data and a digital signal of data attached to the audio data. An apparatus related to digital data recording / reproduction, characterized by comprising means for performing. 14. A recording / reproducing apparatus for recording / reproducing digital data, comprising: means for inputting a digital signal; switching means for switching a transmission destination of the input digital signal;
An apparatus relating to digital data recording / reproduction, wherein said switching means is provided with an instruction means for instructing switching.