KR100302561B1 - Recording device of multifunction digital apparatus - Google Patents

Abstract

PURPOSE: A recording device of a multifunction digital apparatus is provided to operate each switching member under control of a micro computer for various recording modes by connecting an external input signal with an output signal, so as to record and reproduce external input signals between each digital audio apparatus by using one digital to analog converter and one analog to digital converter, respectively. CONSTITUTION: The first digital audio apparatus(10) comprises as follows. An optical pickup(11) retrieves audio data stored in a disk. An RF amplifier(12) amplifies a retrieved signal. A signal processor(14) corrects an error of amplified data. A recording signal amplifier(15) amplifies an output signal of the signal processor(13). A data compressor and expander(13) compresses reproduction data of the signal processor(14), and expands data output from the second digital audio apparatus(50). The second digital audio apparatus(50) comprises as follows. A reproduction signal amplifier(52) amplifies data output from a reproduction head(51). The second data compressor and expander(54) compresses a signal from the first digital audio apparatus(10), and expands a reproduced audio signal. The second signal processor(53) records the compressed signal in a digital tape. Recording signal processors(20, 30, 40) comprise as follows. A switching member(21) outputs reproduction signals of the first and the second digital audio apparatuses(10, 50). A digital to analog converter(22) converts a reproduction signal into an analog signal. The first switching member(30) selects the reproduction signals and an externally-inputted audio signal. An analog to digital converter(41) converts the audio signal into a digital signal. A switching member(42) selectively outputs the digital signal to a digital audio apparatus to record the signal.

Description

Recording device of digital composite device

1 is a block diagram of a conventional digital audio composite device.

2 is a block diagram of a recording apparatus of the present invention.

3 is a flow chart of FIG.

* Explanation of symbols for main parts of the drawings

10,50: first and second digital audio equipment

21,30,42: first, second, third switching member

22: digital / analog conversion means 41: analog / digital conversion means

60: micom

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to recording of a digital audio composite device, and more particularly, to a recording device of a digital audio composite device which enables playback and recording by reducing the number of analog / digital converters and digital / analog converters.

In the conventional digital audio composite device, as shown in FIG. 1, the mini disc 10, the digital compact cassette 20, and the microcomputer 31 for controlling them are largely configured. An optical pickup unit 17 for searching; An RF unit 15 for shaping a signal detected by the optical pickup unit 17, a signal processor 14 for correcting errors of data obtained by the RF unit 15, and an output from the signal processor 14 And a digital / analog converter 12 for compressing the data obtained by the recording head 18, converting the data obtained from the input stage into a digital signal, and outputting the signal through the output stage. ) Is an analog / digital converter 10 for converting a signal input through the output terminal of the mini-disc 10 and the input terminal of the digital compact cassette 20 connected by an external line or an internal pattern, and the analog / digital A compression / extension section 3 for compressing the data obtained by the conversion section 1 in accordance with the format of the digital compact cassette, and the data extended by the compression / extension section 3 is converted into an analog signal and output. A digital / analog converter 2 for outputting to the mini-disc 10 through a stage, and a reproduction signal obtained by amplifying a signal obtained by the compression / extension unit 3 and a signal retrieved by the reproduction head 7. A signal processor 4 for correcting an error of a signal input through the amplifier 5 and a write signal amplifier 6 for amplifying the signal input through the signal processor 4 to record data through the recording head 8. It is composed of a digital compact cassette 20 and a microcom (31) for controlling the mini-disc (10) and the like configured as described above.

In the conventional digital audio composite device configured as described above, an external signal is input and converted into digital signal from the analog / digital converter 1, and then compressed and decoded the audio data from the compression / extension part 3 and transmitted to the signal processor 4. Parity is added and demodulated for error correction, and then transmitted to the write signal amplifier 6 for recording through the write head 8.

In addition, a signal read by the reproduction head 7 of the digital compact cassette 20 is amplified by the reproduction signal amplifier 5 and then transmitted to the signal processing unit 4 to correct an error of data.

In the compression / decompression unit 3, the error correction data is decompressed by the signal processing unit 4, converted to analog through the digital / analog converter 2, and then connected to the output terminal. It is connected to the input line of the) is transmitted to the analog-to-digital converter 19 of the mini-disk (10).

The analog / digital conversion unit 19 converts the analog signal input to the mini-disc 10 into digital to compress the signal through the compression / extension unit 13.

The signal compressed by the compression / expansion unit 13 is transmitted to the signal processing unit 14 and demodulated after the parity is added. The signal is amplified to a predetermined level by the recording signal amplifier 16 and the disc is moved by the recording head 18. Will be recorded on

However, as a simple complex of such a mini-disc and a digital compact cassette of the conventional digital audio composite device, there is a problem in that each of the analog / digital converter and the digital / analog converter 19 must be used.

Accordingly, the present invention provides a recording apparatus for a digital audio composite device to reduce the number of digital / analog and analog / digital converting means by using a switching member controlled by a microcomputer.

Means for achieving the object of the present invention is a reproduction for selecting a digital audio device to be reproduced in the first and second digital audio device, in the first and second digital audio device to record and reproduce the digital audio signal Selection means, input selection means for selecting a signal obtained from the reproduction selecting means and an externally input signal, recording selection means for outputting the signal obtained from the input selection means to a digital audio device to be recorded, the reproduction, According to the accompanying drawings, the present invention will be described below in detail by achieving a microcomputer that controls each input and recording selection means according to a key input.

2 is a block diagram showing an embodiment of a recording apparatus of a digital audio composite device according to the present invention. As shown in FIG. 2, first and second digital audio devices 10 and 50 for recording and reproducing a digital audio signal, Recording signal processing means 20 for selecting a digital audio device to be reproduced by the first and second digital audio devices 10 and 50 or outputting an audio signal input from an external device to a digital audio device to be recorded; 30 and 40, and the recording signal selecting means 20 and 30 and 40, and the microcomputer 60 for controlling each of the first and second digital audio devices by key operation.

The first digital audio device 10 is an optical pickup means 11 for retrieving audio data stored in the disc as a mini-disc, and an RF amplification means for formally amplifying the signal retrieved by the optical pickup means 11 ( 12) and signal processing means 13 for correcting errors in the data obtained by the RF amplification means 12, and amplifying the signals output from the signal processing means 13 onto the disc through the recording head 16. The timing is a recording signal amplifying means 15, a data compressing means 13 for compressing the reproduction data obtained by the signal processing means 13 and outputting the data output from the external or second digital audio device 50; It consists of servo means 17 for controlling said optical pickup means 11.

The second digital audio device 5 is a digital compact cassette and has a reproduction signal amplifying means 52 for amplifying the data output from the reproduction head 51 for retrieving the data stored in the reproduction tape, and the first digital audio device 10. Or a second data compression extension means 54 which compresses a signal input from an external digital audio device, and expands the reproduced audio signal, and a second compressed signal which is compressed by the second data compression extension means 54. And second signal processing means 53 which processes the recording head 56 to record on the digital tape.

The recording signal processing means 20, 30 and 40 are the reproduction signals output from the first digital audio device 10 and the reproduction signals output from the second digital audio device 50 under the control of the microcomputer 6; A switching member 21 for outputting a signal, digital / analog converting means 22 for converting a reproduction signal selected by the third switching member 21 to analog, and digital audio obtained by the digital / analog converting means 22. A first switching member 30 for selecting a reproduction signal of the device 10 or 20 and an audio signal input from the outside, and an analog / digital converting means 4 for converting the audio signal selected by the first switching member into digital; And a switching member 42 for selectively outputting from the digital signal obtained by the analog / digital converting means 4 to a digital audio device to be recorded.

The operation and effect of the present invention configured as described above will be described in detail with reference to FIGS. 2 and 3 of the accompanying drawings.

3 shows four cases as shown in the operation flowchart of the present invention, namely, external recording to the digital compact cassette 50 (second digital audio device), mini disc 10 to digital compact cassette 50, and the like. There is a case like recording from the digital compact cassette 50 to the mini disc 10.

First, the recording from the outside to the internal digital audio device 10, 50 is connected to the external connection end, and the recording method is selected on the key operating means 61, and the microcomputer 6 detects this to detect the mini disc 10 and the digital compact. The cassette and each switching member 21, 30, 42 are controlled to select " a1 " so that the first switching member 30 can be connected to an external input terminal.

The audio signal input from the external input terminal is converted into a digital signal by the analog / digital converting means 41 and output to the second switching member 42 so that the second switching member 42 is a mini disc by the microcomputer 60. 10 or the digital compact cassette 50 can be selected.

If recording to a mini-disc, the second switching member 42 is selected as "b2" and input to the first data compression / extension means 14 which compresses data by about five times, and the input audio signal is It is compressed by the first data compression / extension means 14 and then output to the first signal processing means 13.

The first signal processing means 13 receives the compressed data, arranges the data in accordance with the mini disk 10 format, modulates the data so that the data can be recorded, and then modulates the data by the first recording signal amplifying means 15. Amplification is sent to the recording head 16 for recording on the disc.

Secondly, when recording to the digital compact cassette 50, the third switching member 21 selects "b1" under the control of the microcomputer 60 to compress / extend the digitally converted audio data to the second data. The means 54 compresses the data by about four times and transmits it to the second signal processing means 53.

The second signal processing means 53 is provided with parity so as to correct an error of the received compressed data and modulates the data so that it can be recorded by the second recording head 56. Amplification is carried out through 55) and sent to the second recording head 56 to record this data on a digital tape.

Thirdly, when recording and reproducing is performed between the internal mini disc 10 and the digital compact cassette 50, that is, the mini compact disc 10 is played back and the digital compact cassette 50 is recorded. In some cases, the audio signal reproduced in the 50) is recorded on the mini-disc 10. In the case where the audio signal reproduced in the mini-disc 10 is recorded on the digital compact cassette 50, the key operating means 61 may be used. When the input is selected, the microcomputer 60 detects this and controls the servo unit 17 of the mini disc 10 to retrieve data recorded on the disc through the optical pickup unit 11.

The audio data retrieved by the optical pickup means 11 is shaped and amplified by the RF amplification means 12 and transmitted to the first signal processing means 13.

The first signal processing means 13 demodulates the amplified and shaped audio data, corrects an error, and outputs it to the first data compression / expansion means 14.

The first data compression / expansion means 14 extends the compressed audio data as it is and transmits it to the third switching member 21 so that "c1" is selected by the control of the microcomputer 60 so that the audio data is changed. The digital / analog converting means 22 converts the analog signal into the analog signal through the third switching member 21.

The analog signal converted by the digital / analog converting means 22 is output as an audible voice signal and transmitted to the first switching member 30 through parallel lines.

The first switching member 30 selects "a2" by the control of the microcomputer 60 to the audio signal transmitted from the digital / analog converting means 22, and then the audio signal converts the analog / digital converting means 41. After the digital conversion through the second switching member 42.

The second switching member 42 selects "b1" by the control of the microcomputer 60 and transmits the second switching member 42 to the second data compression / extension means 54.

The audio data inputted to the second data compression / extension means 54 compresses the received digital signal, transmits the received digital signal to the second signal processing means 53, imparts an error correction code and modulates the second recorded signal amplification means. Amplify by 55 to write to digital tape through the second recording head.

Finally, when recording the audio signal reproduced from the digital compact cassette 50 to the mini disc 10, first, the data recorded on the tape is retrieved by the reproduction head 51, and the reproduction signal amplifying means 52 is used. Through the equalized data is transmitted to the second signal processing means 53.

The second signal processing means 53 demodulates the input data, corrects an error, and transmits the data to the second data compression / expansion means 54.

In the second data compression / expansion means 54, the received compressed data is extended to the original audio signal and transmitted to the third switching member 42 along the signal line.

The third switching member 21 selects "c2" by the control of the microcomputer 60 to the signal received from the second data compression / extension means 54, the selected signal is digital / analog conversion means 22 Through converting to analog signal output.

On the other hand, the signal output from the digital / analog converting means 21 is input to the first switching member 30 along the signal line connected to the history, so that "a2" is selected by the control of the microcomputer 60, / Digital conversion means 41, and the analog / digital conversion means 41 converts the received signal to digital to be transmitted to the second switching member (42).

The second switching member 42 selects the digital conversion signal output from the analog / digital conversion means 41 as the “b2” terminal under the control of the microcomputer 60 to compress the first data of the mini disc 10. / To the expansion means (14).

The first data compression / expansion means compresses the received data, adds error correction parity to the data through the first signal processing means 13, demodulates the data, and transmits the data to the first recording signal amplifying means 15. The data amplified by the first recording signal amplifying means 15 is recorded on the disk by amplifying the signal through the first recording head 16.

As described in detail above, the present invention uses only one digital / analog converting means and one analog / digital converting means by connecting the external input signal and the output signal to operate each switching member under the control of the microcomputer in various recording modes. Each digital audio device has an effect of recording and playing back each other or an external input signal.

Claims (2)

(Correction) A plurality of digital audio devices for recording and reproducing digital audio signals, comprising: recording / reproducing selection means for selecting recording and reproduction of each of the plurality of digital audio devices; Input selection means for selecting signals obtained from the plurality of digital audio devices and signals externally input; Data processing means for recording and reproducing data of the plurality of digital audio devices; And control means for controlling the recording / reproducing selection means and the input selection means in accordance with a key input. (Correction) The apparatus according to claim 1, further comprising: digital / analog converting means for converting a hashed digital signal into an analog signal when selecting reproduction from said recording / reproducing selection means; And analog / digital converting means for converting the converted analog signal into a digital signal for recording.