JP2002230890A - Information processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the increase of a cost by dispensing with an integrated circuit exclusively used for communication control. SOLUTION: An audio apparatus 100 has a CD(compact disc) playback function and an MD(mini disc) record/playback function. A CD-DSP(digital signal processor) 113 has an interface part 113a for a USB communication. When a music file MF recorded on the HDD of a PC 300, etc., is recorded on an MD, the interface part 113a is in an operating state, communicates with the PC 300 through a USB(universal serial bus) connector part 141, and receives the music file MF to be recorded. The music file MF is supplied to a MD-DSP 125 from the CD-DSP 113, and is recorded on the MD. USB communication control for receiving the music file MF is not performed in an MD processing part 120, and the load at the time of the record of the MD microcomputer 121 or MD-dynamic support program 125 does not become large. A load during record in an MD microcomputer 121 or the MD-DSP 125 is not increased. Since it is not necessary to provide the MD processing part 120 with a USB communication control part for a USB communication, it is possible to suppress the large increase of a cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a CD (Com
pact Disc) playback function and MD (Mini Disc) recording /
The present invention relates to an information processing device suitable for application to an audio device having a reproduction function. Specifically, the first information processing unit is provided with an interface unit for receiving digital data according to a predetermined interface specification, and the digital data received by the interface unit of the first information processing unit is processed by the second information processing unit. With this configuration, an integrated circuit dedicated to communication control is not required in the second information processing unit, and an increase in cost is suppressed.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional CD reproducing function and MD.
2 shows a configuration of an acoustic device 200 having a recording / reproducing function. The acoustic device 200 has a system microcomputer 201 as a system controller for controlling the operation of the entire device. The system microcomputer 201 includes, for example, a display unit 202 configured by a liquid crystal display element and displaying the state of the device, an operation key unit 203 including a plurality of input keys for user operation, and a remote control transmitter. (Not shown) and a remote control light receiving unit 204 for receiving a remote control signal (infrared signal).

[0003] The audio device 200 includes a CD processing unit 21.
It has 0. The CD processing section 210 is a section for reproducing audio data from a CD (compact disk). The CD processing unit 210 includes a spindle motor for rotating the CD, an optical pickup for reproducing a signal from the CD, and a CD mechanical unit 211 including a thread motor for moving the optical pickup in a radial direction.
And an RF signal processing unit 212 for performing processing such as amplification and waveform shaping on a reproduction signal obtained by the optical pickup of the CD mechanism unit 211.

[0004] The CD processing section 210 performs demodulation processing and error correction processing on the reproduced signal processed by the RF signal processing section 212 to reproduce the reproduced digital audio data D.
Ac-acquired CD-DSP (CD-Digital Signal Processo)
r) 213 and the reproduced digital audio data DA
c to an analog signal to convert the analog audio signal S
A D / A converter 214 for obtaining Acc.

[0005] The CD processing section 210 has a CD-DSP
Based on the servo control signal supplied from the 213 and the tracking error signal and the focus error signal obtained by the RF signal processing unit 212, the focus and tracking of the optical pickup, the feed of the optical pickup, and the rotation of the spindle are controlled through the driver 216. And a servo circuit 215 for performing the operation.

[0006] The audio device 200 includes an MD processing unit 22.
It has 0. The MD processing unit 220 reproduces audio data from an MD (mini disc),
This is a part for recording audio data on the MD.

Under the control of the system microcomputer 201, the MD processing unit 220 includes an MD microcomputer 221 for controlling the operation of the MD processing unit 220 and a USB (Universal).
al Serial Bus) U for performing USB communication with the personal computer (PC) 300 via the connector unit 241
And an SB communication control unit 222.

The MD processing unit 220 includes a spindle motor for rotating the MD, a magnetic head for generating an external magnetic field, an optical pickup for reproducing a signal from the MD, and a thread for moving the optical pickup in a radial direction. An MD mechanism unit 223 composed of a motor and the like;
And an RF signal processing unit 224 that performs processing such as amplification and waveform shaping on the reproduction signal obtained by the optical pickup 23.

The MD processing section 220 performs demodulation processing, error correction processing and data decompression processing on the reproduction signal processed by the RF signal processing section 224 to obtain reproduction digital audio data DAm, MD-DSP (MD-Digital Signal Processor) 225 that obtains a recording signal by performing data compression processing, error correction parity addition processing, and modulation processing on data.
have.

Further, the MD processing unit 220 includes an MD-DSP
225 is amplified by the MD mechanism unit 223
Has a recording amplifier 226 to be supplied. In the MD mechanism section 223, at the time of recording, a magnetic field corresponding to the recording signal is generated from the magnetic head, and the recording signal is subjected to magnetic field modulation recording on the MD in cooperation with the laser beam from the optical pickup.

The MD processing unit 220 is an MD-DSP
Digital audio data DA obtained in step 225
m is converted to an analog signal and the analog audio signal S
A / A converter 227 for obtaining Amd, and an A / A converter for converting an analog audio signal SA obtained from an analog signal processing unit described later into a digital signal and supplying the digital signal to the MD-DSP 225 as recorded digital audio data.
And a D converter 228.

Further, the MD processing unit 220 includes an MD-DSP
Based on the servo control signal supplied from the 225 and the tracking error signal and the focus error signal obtained by the RF signal processing unit 224, the focus and tracking of the optical pickup, the feed of the optical pickup, and the rotation of the spindle are controlled through the driver 230. And a servo circuit 229 for performing the operation.

The audio apparatus 200 receives digital audio data (optical signal) DAi, converts the digital audio data DAi into an electrical signal, and supplies it to the MD-DSP 225. The MD optical input terminal 242 and the CD-DSP 213 provide the audio signal. And a CD light output terminal 243 for converting the reproduced digital audio data DAc (electric signal) into an optical signal and outputting the optical signal. The MD-DSP 225 includes a CD-DSP 21
The reproduced digital audio data DAc obtained in step 3 and the music file MF received from the PC 300 by the USB communication control unit 222 are also supplied as recorded digital audio data.

The acoustic device 200 includes an antenna 231
, A tape recorder 233, an analog audio signal SAcd obtained by the D / A converter 214, and a D / A converter 227. , The analog audio signal SAmd obtained from the tuner unit 232
An analog signal processing unit 234 for selectively outputting tu or the analog audio signal SAta reproduced by the tape recorder unit 233 is provided.

The audio device 200 also includes an analog audio signal SA output from the analog signal processor 234.
Output terminal 244, an amplifier 235 for amplifying the analog audio signal SA output from the analog signal processing unit 234, and the speaker 23 to which the analog audio signal SA amplified by the amplifier 235 is supplied.
6.

The analog signal processing section 234 also obtains an analog audio signal SA supplied as a recording audio signal to the tape recorder section 233, in addition to the above. In the analog signal processing unit 234, sound quality adjustment, volume adjustment, and the like are performed on the analog audio signal SA as necessary.

The operation of the acoustic device 200 shown in FIG. 2 will be described. Here, operations related to the CD processing unit 210 and the MD processing unit 220 will be described. First, an operation in the case where an instruction to play a CD is issued by a user's operation of the operation key unit 203 will be described.

In this case, the CD processing section 210 is in a reproduction state, and the reproduction digital audio data DAc obtained by reproducing the CD from the CD-DSP 213 is output. That is, a reproduction signal reproduced from the CD by the optical pickup is output from the CD mechanism unit 211, and the reproduction signal is subjected to processing such as amplification and waveform shaping by the RF signal processing unit 212. CD-DS for
In P213, demodulation processing and error correction processing are performed to obtain reproduced digital audio data DAc.

The reproduced digital audio data DAC output from the CD-DSP 213 is supplied to the D / A converter 21.
In step 4, the signal is converted into an analog signal. The reproduced analog audio signal SA output from the D / A converter 214
The cd is extracted as an output analog audio signal SA by the analog signal processing unit 234 and is led to the external output terminal 244. The output analog audio signal SA is further amplified by the amplifier 235 and then supplied to the speaker 236. From the speaker 236, a sound based on the reproduced analog audio signal SAcd is obtained.

The reproduced digital audio data DAc output from the CD-DSP 213 is supplied to a CD light output terminal 243, and the reproduced digital audio data DAc is output as an optical signal from the CD light output terminal 243.

Next, the operation when the user operates the operation key section 203 to give an instruction to reproduce the MD will be described. In this case, the MD processing unit 220 enters a playback state, and the MD-DSP 225 outputs the playback digital audio data DAm obtained by playing back the MD. In other words, a reproduction signal reproduced by the optical pickup from the MD is output from the MD mechanism unit 223, and the reproduction signal is subjected to processing such as amplification and waveform shaping by the RF signal processing unit 224. MD-DS for
At P225, demodulation processing, error correction processing, and data decompression processing are performed, and reproduced digital audio data DAm is obtained.

The reproduced digital audio data DAm output from the MD-DSP 225 is
At 27, it is converted to an analog signal. The reproduced analog audio signal S output from the D / A converter 227
Amd is taken out as an output analog audio signal SA by the analog signal processing section 234, and is led out to the external output terminal 244. This output analog audio signal SA is
After being amplified by the amplifier 235, it is supplied to the speaker 236. From the speaker 236, a sound based on the reproduced analog audio signal SAmd is obtained.

Next, an operation in the case where an instruction to record digital audio data DAi from the MD light input terminal 242 to the MD by a user's operation of the operation key unit 203 will be described. In this case, the MD processing unit 220
Is in the recording state, and the digital audio data DAi
Is recorded on the MD. That is, the MD light input terminal 242
MD for digital audio data DAi from
A data compression process, a process of adding parity for error correction, and a modulation process in the DSP 225 to form a recording signal, and the recording signal is amplified by the recording amplifier 226 and
The magnetic field is supplied to the magnetic head driver of the mechanical unit 223 and is recorded on the MD by modulating the magnetic field.

Next, the operation in the case where an instruction to record the reproduced digital audio data DAc from the CD on the MD by operating the operation key unit 203 by the user will be described. In this case, the CD processing unit 210 is in the reproducing state, the MD processing unit 220 is in the recording state, and the reproduced digital audio data DAc from the CD is recorded on the MD.

That is, a reproduction signal reproduced from the CD by the optical pickup is output from the CD mechanism section 211, and the reproduction signal is subjected to processing such as amplification and waveform shaping in the RF signal processing section 212. C
Demodulation processing and error correction processing are performed by the D-DSP 213 to obtain reproduced digital audio data DAc.

The reproduced digital audio data DAc is supplied to the MD-DSP 225, and the reproduced digital audio data DAc is supplied to the MD-DS 225.
In P225, a data compression process, an addition process of a parity for error correction, and a modulation process are performed to form a recording signal. The recording signal is amplified by a recording amplifier 226 and supplied to a magnetic head driver of the MD mechanism unit 223. The magnetic field modulation recording is performed. As a result, the recorded contents of the CD are dubbed to the MD.

In this case, the analog signal processing section 234
, A reproduced analog audio signal SAcd corresponding to the reproduced digital audio data DAC output from the CD-DSP 213 is extracted as an output analog audio signal SA, and the output analog audio signal SA is amplified by an amplifier 235 and supplied to a speaker 236. . Thereby, the user can monitor the sound corresponding to the reproduced digital audio data DAc.

Next, the user operates the operation key section 203 to operate the HD of the personal computer (PC) 300.
An operation in the case where an instruction to record a music file (digital audio data) MF recorded on D or the like on MD will be described. In this case, the USB communication control unit 2
22 is in the operating state, the MD processing unit 220 is in the recording state, and the music file MF received by the USB communication control unit 222 from the PC 300 through the USB connector unit 241.
Is recorded on the MD.

That is, the USB communication control unit 222
Communicates with the PC 300 through the B connector 241;
The music file MF to be recorded is received. This music file MF is recorded digital audio data as MD
-Supplied to the DSP 225. Then, data compression processing is performed on the music file MF by the MD-DSP 225,
A recording signal is formed by performing an addition process and a modulation process of the error correction code, and the recording signal is amplified by the recording amplifier 226 and supplied to the magnetic head driver of the MD mechanism unit 223, and is subjected to magnetic field modulation recording on the MD. Thereby, the PC 30
The music file recorded on the HDD 0 etc. is recorded on the MD.

Next, the user operates the operation key unit 203 to operate the HD of the personal computer (PC) 300.
The operation in the case where an instruction to reproduce the music file MF recorded on D or the like is given will be described. In this case, US
The B communication control unit 222 enters an operating state, and the PC 300 controls the USB communication control unit 22 through the USB connector unit 241.
The sound by the music file MF received in 2 is obtained from the speaker 236.

That is, the USB communication control unit 222
Communicates with the PC 300 through the B connector 241;
The music file MF to be reproduced is received. The music file MF is output from the MD-DSP 225 as reproduced digital audio data DAm. This reproduced digital audio data DAm is supplied to a D / A converter 227.
Is converted to an analog signal. This D / A converter 2
27 is a reproduced analog audio signal SAmd output from
Is extracted as an output analog audio signal SA by an analog signal processing unit 234, amplified by an amplifier 235, and supplied to a speaker 236. As a result, the sound of the music file MF received from the PC 300 is obtained from the speaker 236.

Next, the operation when the user operates the operation key unit 203 to give an instruction to record the analog audio signal SAta obtained by reproduction by the tape recorder unit 233 on the MD will be described. In this case, the tape recorder unit 233 is in the reproduction state, the MD processing unit 220 is in the recording state, and the analog audio signal SAta obtained by reproduction in the tape recorder unit 233 is recorded on the MD.

That is, the analog audio signal SAta obtained by reproduction by the tape recorder section 233 is taken out by the analog signal processing section 234 as an output analog audio signal SA. This output analog audio signal SA
Is converted to a digital signal by an A / D converter 228 and recorded as digital audio data by an MD-DSP.
225.

Then, the recorded digital audio data is subjected to data compression processing, parity addition processing for error correction, and modulation processing by the MD-DSP 225 to form a recording signal.
Is supplied to the magnetic head driver of the MD mechanism unit 223, and is subjected to magnetic field modulation recording on the MD. As a result, the recorded contents of the tape are dubbed to the MD.

In this case, the analog signal processing section 234
The output analog audio signal SA is amplified by an amplifier 235 and supplied to a speaker 236. Thus, the user can monitor the sound corresponding to the reproduced analog audio data SAta. Next, the user's operation key unit 20
When the instruction to record the analog audio signal SAtu from the tuner unit 232 to the MD is given by the operation of the tuner 3, the tuner unit 232 is activated and the MD
The processing unit 220 enters a recording state, and converts the analog audio signal SAta from the tape recorder unit 233 into an MD.
The analog audio signal SAtu from the tuner unit 232 is recorded on the MD in the same manner as when recording on the MD.

[0036]

The acoustic device 2 shown in FIG.
00, the MD microcomputer 220
US and PC-300 in addition to MD21 and MD-DSP225
A USB communication control unit 222 for performing B communication is provided. As described above, the configuration having the USB communication control unit 222 is the reason why the MD microcomputer 221 or the MD-DSP 225 is used.
If USB communication control is performed by M
This is because the load of communication control of the D microcomputer 221 and the MD-DSP 225 becomes heavy.

The USB communication control unit 222 has functions of serial data processing, data buffering, and microcomputer interface, and is a large-scale integrated circuit (IC). Therefore, as shown in FIG.
In the acoustic device 200 including the B communication control unit 222,
Since the USB communication control unit 222 is expensive, there is a problem that the cost is greatly increased. SUMMARY OF THE INVENTION It is an object of the present invention to provide an information processing apparatus which does not require an integrated circuit dedicated to communication control and suppresses an increase in cost.

[0038]

An information processing apparatus according to the present invention includes a first information processing unit for processing first information, and a second information processing unit for processing second information. The first information processing unit has an interface unit for receiving digital data according to a predetermined interface specification, and the second information processing unit is received by the interface unit of the first information processing unit, and the first information It has a function of processing digital data output from the processing unit.

In the present invention, a first information processing section for processing first information, for example, a compact disk processing section for processing information relating to a compact disk, and a first information processing section for processing second information And a mini-disc processing unit for processing information relating to the mini-disc, for example.

The first information processing unit has an interface unit, and digital data is received by the interface unit according to a predetermined interface specification, for example, USB. For example, a music file is received from a personal computer. The received digital data is stored in the second
Is supplied to the information processing section for processing. For example, the received digital data is recorded on a predetermined recording medium by the second information processing unit.

As described above, the digital data received by the first information processing section is processed by the second information processing section, and the second information processing section performs the digital data receiving operation at the time of processing. There is no need to do it. Therefore, it is not necessary to provide an integrated circuit dedicated to communication control in the second information processing unit, and it is possible to suppress an increase in cost.

[0042]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an audio device 100 having a CD reproducing function and an MD recording / reproducing function.
Is shown. The acoustic device 100 has a system microcomputer 101 as a system controller for controlling the operation of the entire device. The system microcomputer 101 includes, for example, a display unit 102 configured by a liquid crystal display element and displaying the state of the apparatus, and an operation key unit 103 including a plurality of input keys and the like for user operation.
And a remote control light receiving unit 1 for receiving a remote control signal (infrared signal) from a remote control transmitter (not shown)
04.

The audio device 100 includes a CD processing unit 11
It has 0. The CD processing section 110 is a section for reproducing audio data from a CD (compact disk). The CD processing unit 110 includes a spindle motor for rotating the CD, an optical pickup for reproducing signals from the CD, a CD mechanical unit 111 including a thread motor for moving the optical pickup in a radial direction, and the like.
And an RF signal processing unit 112 for performing processing such as amplification and waveform shaping on a reproduction signal obtained by the optical pickup of the CD mechanical unit 111.

The CD processing section 110 performs demodulation processing and error correction processing on the reproduction signal processed by the RF signal processing section 112 and performs reproduction digital audio data D
It has a CD-DSP 113 for obtaining Ac, and a D / A converter 114 for converting the reproduced digital audio data DAc to an analog signal to obtain an analog audio signal SAcd.

Here, the CD-DSP 113 is connected to a personal computer (P
C) It has a USB interface unit 113a for performing USB communication with 300. The CD-DSP originally has a serial data signal processing function and a data buffering function necessary for USB communication control. Therefore, the CD-DSP 113 is further compared with the CD-DSP 213 in the audio device 200 of FIG.
An SB processing algorithm is added, and a USB input pin is added.

Also, the CD processing unit 110 has a CD-DSP
Based on the servo control signal supplied from 113 and the tracking error signal and focus error signal obtained by the RF signal processing unit 112, the focus and tracking of the optical pickup, the feed of the optical pickup, and the rotation of the spindle are controlled through the driver 116. And a servo circuit 115 for performing the operation.

The audio device 100 includes the MD processing unit 12
It has 0. The MD processing unit 120 reproduces audio data from an MD (mini disc),
This is a part for recording audio data on the MD.

The MD processing unit 120 includes a spindle motor for rotating the MD, a magnetic head for generating an external magnetic field, an optical pickup for reproducing a signal from the MD, and a thread for moving the optical pickup in a radial direction. An MD mechanism 123 including a motor and the like, and the MD mechanism 1
And an RF signal processing unit 124 for performing processing such as amplification and waveform shaping on the reproduction signal obtained by the optical pickup 23.

The MD processing section 120 performs demodulation processing, error correction processing, and data decompression processing on the reproduction signal processed by the RF signal processing section 124 to obtain reproduction digital audio data DAm. An MD-DSP 125 is provided that obtains a recording signal by performing data compression processing, error correction parity addition processing, and modulation processing on data.

The MD processing unit 120 is an MD-DSP
Amplifying the recording signal obtained at 125 and MD mechanism unit 123
And a recording amplifier 126 for supplying the recording amplifier 126. In the MD mechanism section 123, during recording, a magnetic field corresponding to the recording signal is generated from a magnetic head, and the recording signal is subjected to magnetic field modulation recording on the MD in cooperation with laser light from an optical pickup.

The MD processing unit 120 is an MD-DSP
125. The reproduced digital audio data DA obtained at 125
m is converted to an analog signal and the analog audio signal S
A / A converter 127 for obtaining Amd, and an A / A converter that converts an analog audio signal SA obtained from an analog signal processing unit described later into a digital signal and supplies the digital signal to the MD-DSP 125 as recorded digital audio data.
And a D converter 128.

The MD processing unit 120 is an MD-DSP
The focus and tracking of the optical pickup, the feed of the optical pickup, and the rotation of the spindle are controlled through the driver 130 based on the servo control signal supplied from 125 and the tracking error signal and focus error signal obtained by the RF signal processing unit 124. And a servo circuit 129 for performing the operation.

The audio apparatus 100 receives the digital audio data (optical signal) DAi, converts it into an electric signal, and supplies it to the MD-DSP 125. The MD optical input terminal 142 and the CD-DSP 113 obtain this signal. And a CD light output terminal 143 for converting the reproduced digital audio data DAc (electric signal) into an optical signal and outputting the optical signal. The MD-DSP 125 includes a CD-DSP 11
3. The reproduced digital audio data DAC obtained in step 3.
(Including the music file MF received from the PC 300 by the USB interface unit 113a) is also supplied as recorded digital audio data.

The acoustic device 100 includes an antenna 131
, A tuner section 132 for processing an AM broadcast signal or an FM broadcast signal received by the D / A converter 114 to obtain an analog audio signal SAtu, a tape recorder section 133, an analog audio signal SAcd obtained by a D / A converter 114, and a D / A converter 127. , The analog audio signal SAmd obtained from the tuner unit 132
The analog signal processing unit 134 selectively outputs the tu or the analog audio signal SAta reproduced by the tape recorder unit 133.

Further, the audio device 100 includes an analog audio signal SA output from the analog signal processing unit 134.
, An amplifier 135 that amplifies the analog audio signal SA output from the analog signal processing unit 134, and the speaker 13 to which the analog audio signal SA amplified by the amplifier 135 is supplied.
6.

The analog signal processing section 134 also obtains an analog audio signal SA supplied as a recording audio signal to the tape recorder section 133 in addition to the above. In the analog signal processing unit 134, sound quality adjustment, volume adjustment, and the like are performed on the analog audio signal SA as necessary.

The operation of the acoustic device 100 shown in FIG. 1 will be described. Here, operations related to the CD processing unit 110 and the MD processing unit 120 will be described. First, an operation in the case where an instruction to play a CD is made by a user's operation of the operation key unit 103 will be described.

In this case, the CD processing section 110 is in a reproduction state, and the reproduction digital audio data DAc obtained by reproducing the CD from the CD-DSP 113 is output. That is, a reproduction signal reproduced from the CD by the optical pickup is output from the CD mechanical unit 111, and the reproduction signal is subjected to processing such as amplification and waveform shaping by the RF signal processing unit 112. CD-DS for
At P113, demodulation processing and error correction processing are performed, and reproduced digital audio data DAc is obtained.

The reproduced digital audio data DAC output from the CD-DSP 113 is supplied to the D / A converter 1.
At 14 it is converted to an analog signal. The reproduced analog audio signal S output from the D / A converter 114
Acd is taken out as an output analog audio signal SA by the analog signal processing unit 134 and led out to the external output terminal 144. This output analog audio signal SA is
Further, after being amplified by the amplifier 135, it is supplied to the speaker 136. From the speaker 136, a sound based on the reproduced analog audio signal SAcd is obtained. Also CD
-The reproduction digital audio data DAc output from the DSP 113 is supplied to the CD light output terminal 143,
Reproduced digital audio data DAc is output from the CD light output terminal section 143 as an optical signal.

Next, the operation when the user operates the operation key section 103 to give an instruction to reproduce the MD will be described. In this case, the MD processing unit 120 enters a playback state, and the MD-DSP 125 outputs playback digital audio data DAm obtained by playing back the MD. That is, a reproduction signal reproduced by the optical pickup from the MD is output from the MD mechanism unit 123, and the reproduction signal is subjected to processing such as amplification and waveform shaping by the RF signal processing unit 124, and further, the reproduction signal after the processing is performed. MD-DS for
At P125, demodulation processing, error correction processing, and data decompression processing are performed to obtain reproduced digital audio data DAm.

The reproduced digital audio data DAm output from the MD-DSP 125 is supplied to the D / A converter 1.
At 27, it is converted to an analog signal. The reproduced analog audio signal S output from the D / A converter 127
Amd is extracted by the analog signal processing unit 134 as an output analog audio signal SA, and is output to the external output terminal 144. This output analog audio signal SA is
Further, after being amplified by the amplifier 135, it is supplied to the speaker 136. From this speaker 136, a sound based on the reproduced analog audio signal SAmd is obtained.

Next, a description will be given of an operation in the case where an instruction to record digital audio data DAi from the MD light input terminal section 142 has been given to the MD by operating the operation key section 103 by the user. In this case, the MD processing unit 120
Is in the recording state, and the digital audio data DAi
Is recorded on the MD. That is, the MD light input terminal section 142
MD for digital audio data DAi from
-A recording signal is formed by the data compression processing, the addition processing of the parity for error correction, and the modulation processing by the DSP 125, and the recording signal is amplified by the recording amplifier 126 and
The magnetic field is supplied to the magnetic head driver of the mechanical unit 123 and is recorded on the MD by modulating the magnetic field.

Next, the operation when the user operates the operation key section 103 to instruct the MD to record the reproduced digital audio data DAc from the CD on the MD will be described. In this case, the CD processing unit 110 is in the reproducing state, the MD processing unit 120 is in the recording state, and the reproduced digital audio data DAc from the CD is recorded on the MD.

That is, a reproduction signal reproduced from the CD by the optical pickup is output from the CD mechanical section 111, and the reproduction signal is subjected to processing such as amplification and waveform shaping in the RF signal processing section 112. C
Demodulation processing and error correction processing are performed by the D-DSP 113 to obtain reproduced digital audio data DAc.

The reproduced digital audio data DAc is supplied to the MD-DSP 125, and the reproduced digital audio data DAc is supplied to the MD-DS 125.
In P125, a data compression process, an addition process of a parity for error correction, and a modulation process are performed to form a recording signal. The recording signal is amplified by the recording amplifier 126 and supplied to the magnetic head driver of the MD mechanism unit 123. The magnetic field modulation recording is performed. As a result, the recorded contents of the CD are dubbed to the MD.

In this case, the analog signal processing unit 134
, A reproduced analog audio signal SAcd output from the CD-DSP 113 and corresponding to the reproduced digital audio data DAc is extracted as an output analog audio signal SA, and the output analog audio signal SA is amplified by an amplifier 135 and supplied to a speaker 136.
Thereby, the user can monitor the sound corresponding to the reproduced digital audio data DAc.

Next, the user operates the operation key section 103 to operate the HD of the personal computer (PC) 300.
An operation in the case where an instruction to record a music file (digital audio data) MF recorded on D or the like on MD will be described. In this case, the CD-DSP 113
USB interface unit 113a becomes active,
The MD processing unit 120 enters the recording state, and the PC 300
The music file MF received by the USB interface unit 113a through the SB connector unit 141 is recorded on the MD.

That is, the USB interface unit 113a of the CD-DSP 113 communicates with the PC 300 through the USB connector unit 141 to receive the music file MF to be recorded. This music file MF is supplied to the MD-DSP 125 as recorded digital audio data. Then, the MD-D
A data compression process, a process of adding parity for error correction, and a modulation process are performed in SP125 to form a recording signal.
The recording signal is amplified by the recording amplifier 126 and supplied to the magnetic head driver of the MD mechanism unit 123, where the recording signal is subjected to magnetic field modulation recording on the MD. Thereby, the music file MF recorded on the HDD or the like of the PC 300 is recorded on the MD.

As described above, when the music file (digital audio data) MF recorded on the HDD or the like of the PC 300 is recorded on the MD, the reproduction process of the CD is not performed. Even if the control is performed, the load on the CD-DSP 113 does not increase.

In this case, data such as a music file name in the USB data is transferred from the CD-DSP 113 to the MD microcomputer 121 via the system microcomputer 101 and the MD microcomputer 121.
-The data is supplied to the DSP 125 and recorded on the MD. At this time, the processing load of the system microcomputer 101 is larger than that of the system microcomputer 201 in the audio device 200 shown in FIG.
It has the function of inputting the music file name during D recording,
The processing load does not increase so much.

Next, the user operates the operation key section 103 to operate the HD of the personal computer (PC) 300.
The operation in the case where an instruction to reproduce the music file MF recorded on D or the like is given will be described. In this case, CD
-The USB interface unit 113a of the DSP 113 is in an operating state, and the USB connector unit 141 is
The sound by the music file MF received by the USB interface unit 113a through the speaker 136 is obtained.

That is, the USB interface unit 113a of the CD-DSP 113 communicates with the PC 300 through the USB connector unit 141 to receive the music file MF to be reproduced. This music file MF is a CD-DSP
From 113, it is output as reproduced digital audio data DAc. This reproduced digital audio data D
Ac is converted into an analog signal by the D / A converter 114. The reproduced analog audio signal SAcd output from the D / A converter 114 is supplied to the analog signal processing unit 1.
At 34, it is extracted as an output analog audio signal SA, and is amplified by an amplifier 135 and supplied to a speaker 136. As a result, the speaker 136 outputs the PC 30
0, the sound by the received music file MF is obtained.

Next, a description will be given of the operation in the case where an instruction to record the analog audio signal SAta obtained by reproduction by the tape recorder unit 133 on the MD is made by the operation of the operation key unit 103 by the user. In this case, the tape recorder 133 enters a playback state, the MD processing section 120 enters a recording state, and the analog audio signal SAta obtained by the playback by the tape recorder 133 is recorded on the MD.

That is, the analog audio signal SAta obtained by reproduction by the tape recorder 133 is taken out by the analog signal processor 134 as an output analog audio signal SA. This output analog audio signal SA
Is converted to a digital signal by an A / D converter 128 and recorded as digital audio data by an MD-DSP.
125.

The recording digital audio data is subjected to data compression processing, addition processing of parity for error correction and modulation processing by the MD-DSP 125 to form a recording signal.
The amplified signal is supplied to the magnetic head driver of the MD mechanism unit 123, and is subjected to magnetic field modulation recording on the MD. As a result, the recorded contents of the tape are dubbed to the MD.

In this case, the analog signal processing unit 134
The output analog audio signal SA is amplified by an amplifier 135 and supplied to a speaker 136. Thus, the user can monitor the sound corresponding to the reproduced analog audio data SAta. Next, the user's operation key unit 10
When an instruction to record the analog audio signal SAtu from the tuner unit 132 on the MD is given by the operation of the tuner 3, the tuner unit 132 enters the operating state and the MD
The processing unit 120 enters a recording state, and converts the analog audio signal SAta from the tape recorder unit 133 into an MD.
The analog audio signal SAtu from the tuner unit 132 is recorded on the MD in the same manner as when recording on the MD.

As described above, in this embodiment, when the music file MF recorded on the HDD or the like of the PC 300 is recorded on the MD, the CD-DSP 113
The B interface unit 113a enters the operating state, and the USB
It communicates with the PC 300 through the connector unit 141 and receives a music file MF to be recorded. Then, the music file MF is transmitted from the CD-DSP 113 to the MD-DSP1.
25 and recorded on the MD. Thus, MD
US for receiving music file MF in processing unit 120
B does not perform communication control.
The load at the time of recording of the D-DSP 125 does not increase. Therefore, as in the acoustic device 200 shown in FIG.
It is not necessary to have the B communication control unit 222, and a large increase in cost can be suppressed.

As described above, the CD-DSP 11
3 is a CD-DSP 21 in the audio device 200 of FIG.
In addition to the addition of the USB processing algorithm to No. 3, a USB input pin has been added, but none of them will increase the cost.

In this embodiment, the CD-D
The SP 113 has a USB interface unit 113a, and the CD-DSP 113 is connected to the PC 300 via the USB connector unit 141. Therefore,
Even without the above, the digital audio data reproduced from the CD can be easily transmitted to the PC 300 and recorded on the HDD or the like.

In the above embodiment, the PC 3
Although the interface specification for connection with 00 is USB, the present invention can be similarly applied to those adopting other interface specifications. In the above-described embodiment, the present invention is applied to the audio device 100 having the CD reproducing function and the MD recording / reproducing function. However, the present invention is also applicable to other information processing devices that handle video data, program data, and the like. The present invention can be similarly applied. Further, the processing for the received digital data is not limited to recording.

[0081]

According to the present invention, the first information processing section is provided with an interface section for receiving digital data according to a predetermined interface specification, and the digital data received by the interface section of the first information processing section is transmitted to the first information processing section. The configuration is such that processing is performed by the second information processing unit, and an integrated circuit dedicated to communication control is not required in the second information processing unit, so that a significant increase in cost can be suppressed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an audio device according to an embodiment.

FIG. 2 is a block diagram illustrating a configuration of a conventional acoustic device.

[Explanation of symbols]

 Reference Signs List 100 audio device 101 system microcomputer 103 operation key unit 110 CD processing unit 113 CD-DSP 113a USB interface unit 120 MD processing unit 121 MD microcomputer 125 MD-DSP 134 analog signal processing unit 136 speaker 141 USB connector unit 300 personal computer (PC)

Claims (4)

[Claims] A first information processing unit for processing first information; and a second information processing unit for processing second information, wherein the first information processing unit has a predetermined interface specification. The second information processing section processes digital data received by the interface section of the first information processing section and output from the first information processing section. An information processing apparatus having a function of performing 2. The predetermined interface specification is USB
The information processing apparatus according to claim 1, wherein 3. The first information processing section is a compact disk processing section for processing information on a compact disk, and the second information processing section is a mini disk processing section for processing information on a mini disk. The information processing apparatus according to claim 1, wherein: 4. The processing of the digital data in the second information processing section is a processing of recording the digital data on a predetermined recording medium.
An information processing apparatus according to claim 1.