JPH10112125A - Signal processing semiconductor device and signal processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a sharable device independent of recording medium by providing a signal processing selective function corresponding to plural recording media. SOLUTION: Since various kinds of recording media 1-1, 1-2, 1-n have different recording systems from each other, a recording/reproducing signal processing semiconductor device has also corresponding signal processing parts and a common part. A signal processing corresponding to each recording medium is selected by an output of a selective control signal generator 3, for recording/ reproducing signal processing. Data inputted through an interface part 4 from external equipment such as a host computer, etc., are written through a write- purpose signal processing circuit corresponding to a recording medium selected by a control signal from the selective control signal generator 3. Also, the control signal outputs a signal from a recording medium to the interface part 4 through a read-purpose signal processing circuit. Thus, it becomes possible to achieve a device sharable with plural recording media by providing a signal processing system which can correspond to plural recording media.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiconductor device for identifying and processing signals from a plurality of recording media in a system for recording and reproducing data on and from a recording medium from an external device such as a host computer. The present invention relates to a recording / reproducing signal processing semiconductor device for sharing a semiconductor device by a medium identification unit.

[0002]

2. Description of the Related Art A conventional recording / reproducing signal processing system for recording data on a recording medium or reproducing data from the recording medium will be described below. FIG. 11 is a configuration diagram of a conventional recording / reproducing signal processing system, where 1 is a recording medium, 5 is a head amplifier,
Reference numeral 6 denotes a read / write channel, and reference numeral 4 denotes an interface unit.

The operation of the recording / reproducing signal processing system configured as described above will be described below.

[0004] The read / write channel is used to transfer data obtained from the host computer via the interface unit.
It performs data modulation, write compensation, signal amplification, etc., and records data on a recording medium via a head amplifier (write head amplifier). Further, the data recorded on the recording medium is amplified by a head amplifier (read head amplifier), signal amplification, data discrimination, data demodulation, etc. are performed, and the data is transmitted to an external device such as a host computer via an interface unit.

[0005] The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also corresponds to each.

[0006]

The above-mentioned recording / reproducing system has a problem that if the recording medium changes, the recording / reproducing signal processing device such as a head amplifier and a read / write channel also changes.

It is an object of the present invention to provide a recording / reproducing signal processing semiconductor device and a recording / reproducing signal processing device for solving the above-mentioned conventional problems.

[0008]

SUMMARY OF THE INVENTION The present invention performs signal processing corresponding to a recording medium, and performs recording and processing independent of the recording medium.
It is an object to realize a reproduction signal processing semiconductor device and a recording / reproduction signal processing device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 1, 1-1, 1-2, 1-n are recording media (media 1 to n), 2 is a semiconductor device for processing a recording / reproducing signal, 3 is a selection control signal generator, and 4 is an interface unit.

[0011] The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes a corresponding signal processing unit and a common unit.

The signal processing corresponding to each recording medium is selected by the output of the selection control signal generator, and
Performs signal processing for reproduction. Data input from an external device such as a host computer via the interface unit is transferred to a recording medium via a write signal processing circuit corresponding to a recording medium selected by a control signal from a selection control signal generator. Written. In addition, a signal from a certain recording medium is output to an interface unit via a signal processing circuit for reading in response to a control signal from a selection control signal generator.

By adopting a configuration including a signal processing method that can support a plurality of recording media, a recording / reproducing signal processing semiconductor device that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 2) FIG. 2 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 2, 1-1, 1-2, 1-n are recording media (media 1 to n), 2 is a recording / reproducing signal processing semiconductor device, 2-1 is a recording medium identification unit, and 4 is an interface unit. .

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes a corresponding signal processing unit and a common unit.

The signal processing corresponding to each recording medium is selected based on the output of the recording medium identification unit, and performs signal processing for recording and reproduction. At the time of recording, a recording signal processing section in the recording / reproducing signal processing semiconductor device is selected so that a desired recording medium is selected by a control signal from the interface section. At the time of reproduction, the recording medium is identified by the recording medium identification unit with reference to the reproduction signal from the recording medium, and the signal is selected for reproduction signal processing by a control signal via an external selection control signal generator. Output the reproduction signal to the unit.

By adopting a configuration including a signal processing method that can handle a plurality of recording media, a recording / reproducing signal processing semiconductor device that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 3) FIG. 3 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 3, 1-1, 1-2, 1-n are recording media (media 1 to n), 2 is a recording / reproducing signal processing semiconductor device, 2-1 is a recording medium identification unit, and 2-2 is data demodulation. Part 2,
Reference numeral -3 denotes a data modulation unit, and reference numeral 4 denotes an interface unit.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes a corresponding data modulation / demodulation unit and a common unit.

Data demodulation corresponding to each recording medium is selected by the output of the recording medium identification unit, and data modulation is selected by a control signal from the interface unit to perform modulation / demodulation of recording / reproduction. At the time of recording, the data modulation section in the recording / reproducing signal processing semiconductor device is selected so that desired data modulation is selected by a control signal from the interface section. At the time of reproduction, the recording medium is identified by the recording medium identification section with reference to the reproduction signal from the recording medium, the data demodulation section is selected by the identification signal of the recording medium identification section, and the reproduction signal is output to the interface section.

By adopting a configuration including a data modulation / demodulation method capable of supporting a plurality of recording media, a recording / reproducing signal processing semiconductor device which can be shared by a plurality of recording media independently of the recording media can be realized. it can.

(Embodiment 4) FIG. 4 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 1, 1-1, 1-2, 1-n are recording media (media 1 to n), 2 is a semiconductor device for processing recording / reproducing signals, 2-1 is a recording medium identification unit, 2-4 is an amplifier, 2-5 is a reproduction signal processing unit, and 4 is an interface unit.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes a corresponding signal processing unit and a common unit.

The signal processing corresponding to each recording medium is selected by the output of the recording medium identification unit, and performs the signal processing of the reproduction system. At the time of data reproduction, the recording medium is identified by the recording medium identification unit with reference to the reproduction signal from the recording medium, and the characteristics of the amplifier and the reproduction signal processing unit are changed to desired characteristics using the identification signal as a control signal.

By adopting a configuration including a signal processing method that can support a plurality of recording media, a semiconductor device for processing recorded / reproduced signals that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 5) FIG. 5 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 5, 1-1, 1-2, and 1-n are recording media (media 1 to n), 2 is a semiconductor device for processing recorded / reproduced signals, 2-41, 2-42, and 2-4n are amplifiers, -61, 2-
62, 2-6n are read channels, 2-71, 2-72, 2
-7n is a modulation encoder, 2-b3 is a selection control input section for the plurality of amplifiers and the plurality of read channels, and 2-b3.
Reference numeral 4 denotes a selection control input section of the plurality of modulation encoders.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes an amplifier, a read channel, a modulation encoder, and a common unit corresponding to each.

The signal read from each recording medium is reproduced by an amplifier and a read channel corresponding to each recording medium, and written into each recording medium by a modulation encoder corresponding to each recording medium. The selection control input port 2-b3 selects an amplifier and a read channel corresponding to one of the recording media, and the selection control input port 2-b4 selects one or a plurality of modulation encoders. The output of the read channel is the input of the modulation encoder, and the signal read from one recording medium is written to another recording medium.

By adopting a configuration including a signal processing method that can support a plurality of recording media, a recording / reproducing signal processing semiconductor device that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 6) FIG. 6 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 6, 1-1, 1-2, and 1-n are recording media (media 1 to n), 2 is a semiconductor device for processing recording / reproducing signals, 2-41, 2-42, and 2-4n are amplifiers, -61, 2-
62, 2-6n are read channels, 2-71, 2-72, 2
-7n is a modulation encoder, 2-8 is a switch, 2-4 is an interface unit, 2-b3 is a selection control input unit of the plurality of amplifiers and the plurality of read channels, and 2-b4 is a plurality of the plurality of read channels. This is a selection control input port of the modulation encoder.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes an amplifier, a read channel, a modulation encoder, and a common unit corresponding to each.

The signal read from each recording medium is reproduced by an amplifier and a read channel corresponding to each recording medium, and is written to each recording medium by a modulation encoder corresponding to each recording medium. The selection control input port 2-b3 selects an amplifier and a read channel corresponding to one of the recording media, and the selection control input port 2-b4 selects one or a plurality of modulation encoders and switches. By selecting the switch,
Either a signal read from the recording medium via the amplifier and the read channel or a signal from the interface unit is written to another recording medium.

By adopting a configuration including a signal processing method that can support a plurality of recording media, a recording / reproducing signal processing semiconductor device that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 7) FIG. 7 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 7, 1-1, 1-2, and 1-n are recording media (media 1 to n), 2 is a semiconductor device for processing recorded / reproduced signals, 2-41, 2-42, and 2-4n are amplifiers, -61, 2-
62, 2-6n are read channels, 2-71, 2-72, 2
-7n is a modulation encoder, 2-8 is a switch, 2-9 is a multiplexer, 2-4 is an interface unit, and 2-b5 is a control input unit of the multiplexer.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes an amplifier, a read channel, a modulation encoder, and a common unit corresponding to each.

The signal read from each recording medium is reproduced by an amplifier and a read channel corresponding to each recording medium, and is written to each recording medium by a modulation encoder corresponding to each recording medium. The multiplexer is controlled by the selection control input port 2-b5, an amplifier and a read channel corresponding to one of the recording media are selected, and one or a plurality of modulation encoders and switches are selected. By the selection of the switch, either a signal read from the recording medium via the amplifier and the read channel or a signal from the interface unit is written to another recording medium.

By adopting a configuration including a signal processing method that can handle a plurality of recording media, a recording / reproducing signal processing semiconductor device that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 8) FIG. 8 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 8, 1-1, 1-2, and 1-n are recording media (media 1 to n), 2 is a recording / reproducing signal processing semiconductor device, 2-41, 2-42, and 2-4n are amplifiers, -61, 2-
62, 2-6n are read channels, 2-71, 2-72, 2
-7n is a modulation encoder, 2-9 is a multiplexer, 2-10
Is a matrix switch section, 2-4 is an interface section, and 2-b5 is a control input section of the multiplexer.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes an amplifier, a read channel, a modulation encoder, and a common unit corresponding to each.

The signal read from each recording medium is reproduced by an amplifier and a read channel corresponding to each recording medium, and is written to each recording medium by a modulation encoder corresponding to each recording medium. The multiplexer is controlled by the selection control input section 2-b5,
An amplifier and a read channel corresponding to one or a plurality of recording media, one or a plurality of modulation encoders, and a state of a matrix switch unit are selected. Depending on the selection of the state of the matrix switch section, either a signal read from the recording medium via the amplifier and the read channel or a signal from the interface section is written to another recording medium. At this time, reading and writing of a plurality of signals can be performed depending on the control signal from the multiplexer and the state of the matrix switch unit.

By adopting a configuration including a signal processing method that can support a plurality of recording media, a recording / reproducing signal processing semiconductor device that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 9) FIG. 9 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 9, 1-1, 1-2, and 1-n are recording media (media 1 to n), 2 is a semiconductor device for processing recording / reproducing signals, 2-41, 2-42, and 2-4n are amplifiers, -61, 2-
62, 2-6n are read channels, 2-71, 2-72, 2
-7n is a modulation encoder, 2-9 is a multiplexer, 2-10
Is a matrix switch section, 2-4 is an interface section, 2-b5 is a multiplexer control input section, 2-b6
Is a control input unit of the matrix switch unit.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes an amplifier, a read channel, a modulation encoder, and a common unit corresponding to each.

The signal read from each recording medium is reproduced by an amplifier and a read channel corresponding to each recording medium, and is written into each recording medium by a modulation encoder corresponding to each recording medium. The multiplexer is controlled by the selection control input section 2-b5,
An amplifier and a read channel corresponding to one or a plurality of recording media are selected, one or a plurality of modulation encoders are selected, and a matrix switch section control input section 2-b is selected.
6, the state of the matrix switch section is selected.
Depending on the selection of the state of the matrix switch unit, either a signal read from the recording medium via the amplifier and the read channel or a signal from the interface unit is written to another recording medium. At this time, reading and writing of a plurality of signals can be performed depending on the control signal from the multiplexer and the state of the matrix switch unit.

By adopting a configuration including a signal processing method that can handle a plurality of recording media, a recording / reproducing signal processing semiconductor device that can be shared by a plurality of recording media without depending on the recording medium can be realized. it can.

(Embodiment 10) FIG. 10 shows a configuration diagram of a recording / reproducing signal processing semiconductor device according to the present embodiment. In FIG. 10, 1-1, 1-2, and 1-n are recording media (media 1 to n), 2 is a semiconductor device for processing recording / reproducing signals, 2-41, 2-42, and 2-4n are amplifiers, -6
1, 2-62, 2-6n are read channels, 2-71, 2-
72, 2-7n are modulation encoders, 2-11 is an asynchronous transfer mode transmission processing unit, and 2-12 is an asynchronous transfer mode reception processing unit.

The recording medium here is of various types such as a hard disk, an optical disk, a magnetic tape, and a DVD, and the data recording method differs depending on the recording medium.
The recording / reproducing signal processing semiconductor device also includes an amplifier, a read channel, a modulation encoder, and a common unit corresponding to each.

The signal read from each recording medium is reproduced by an amplifier and a read channel corresponding to each recording medium, and is written into each recording medium by a modulation encoder corresponding to each recording medium. Signals having different amounts of information reproduced by the amplifier and the read channel are processed in accordance with the amount of information to be transferred by the asynchronous transfer mode transmission processing unit, and transmitted in the asynchronous transfer mode. Also, the signal received in the asynchronous transfer mode is
The signal is processed by an asynchronous transfer mode reception processing unit so that the signal has an information amount corresponding to a plurality of recording media, and is modulated and coded by each modulation coder and written to the recording medium.

As described above, by adopting a configuration including the signal processing method and the asynchronous transfer mode transmission / reception processing unit capable of supporting a plurality of recording media, the recording media can be shared by a plurality of recording media and asynchronous transfer is possible. It is possible to realize a recording / reproducing signal processing semiconductor device.

[0050]

As described above, according to the present invention, the recording / reproducing signal processing semiconductor device can be shared for a plurality of recording media.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a first embodiment.

FIG. 2 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a second embodiment.

FIG. 3 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a third embodiment;

FIG. 4 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a fourth embodiment.

FIG. 5 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a fifth embodiment.

FIG. 6 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a sixth embodiment.

FIG. 7 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a seventh embodiment.

FIG. 8 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to an eighth embodiment.

FIG. 9 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a ninth embodiment;

FIG. 10 is a configuration diagram of a recording / reproducing signal processing semiconductor device according to a tenth embodiment.

FIG. 11 is a configuration diagram of a conventional recording / reproducing signal processing semiconductor device.

[Explanation of symbols]

1-1, 1-2, 1-n Recording medium 2 Recording / playback signal processing semiconductor device 2-1 Media identification unit 2-2 Data demodulation unit 2-3 Data modulation unit 2-4, 2-41, 2-42 , 2-4n Amplifier 2-5 Reproduction signal processing unit 2-61, 2-62, 2-6n Read channel 2-71, 2-72, 2-7n Modulation encoder 2-8 Switch 2-9 Multiplexer 2- 10 Matrix switch unit 2-11 Asynchronous transfer mode transmission processing unit 2-12 Asynchronous transfer mode reception processing unit 2-a1, 2-a2, 2-an Input / output unit from media 2-b1 Input from selection control signal generator Unit 2-b2 Output unit to selection control signal generator 2-b3, 2-b4 External control input unit 2-b5 Multiplexer control input unit 2-b6 Matrix switch unit control input unit 2-c interface Parts and output unit 2-d to the external device, 2-e interface unit and the input unit 3 selects the control signal generator 4 interface unit from the external device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Yoshifumi Okamoto, Inventor 1006 Odakadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (14)

[Claims] 1. An input / output unit having the same number of input / output units as the plurality of recording media connected to a plurality of recording media, an input / output unit with an interface unit connected to an external device, and selection control for selecting any of the plurality of recording media. A signal processing semiconductor device for performing recording / reproducing signal processing with the plurality of recording media having a control signal input unit from a signal generator. 2. An input / output unit as many as the plurality of recording media connected to a plurality of recording media, an input / output unit with an interface connected to an external device, and selection control for selecting any one of the plurality of recording media. A signal processing semiconductor having an input unit from a signal generator and a recording medium determination output unit, and performing a recording / reproducing signal process with the plurality of recording media internally provided with a recording medium identification unit for identifying the plurality of recording media apparatus. 3. A signal processing device comprising: the signal processing semiconductor device according to claim 1; a plurality of recording media connected to the signal processing semiconductor device; an interface unit; and a selection control signal generator. 4. A recording medium identification having the same number of input / output units as the plurality of recording media connected to a plurality of recording media, and an input / output unit with an interface unit connected to an external device, and identifying the plurality of recording media. A plurality of recording media, each of which includes a unit, a data demodulation unit that selects a data demodulation method based on a signal from the recording medium identification unit, and a data modulation unit that selects a data modulation method based on a signal from the recording medium identification unit. And a signal processing semiconductor device for performing recording / reproduction signal processing. 5. A recording medium identification having the same number of input / output units as the plurality of recording media connected to a plurality of recording media, and an input / output unit with an interface unit connected to an external device, and identifying the plurality of recording media. And a plurality of recording media internally provided with an amplifier for selecting an amplifier characteristic by a signal from the recording medium identification unit and a reproduction signal processing unit for selecting reproduction signal processing by a signal from the recording medium identification unit. A signal processing semiconductor device for performing a recording / reproducing signal processing of a signal. 6. An input / output unit having the same number of input / output units as the plurality of recording media connected to a plurality of recording media, an input / output unit with an interface unit connected to an external device, and a plurality of external control input units,
The plurality of recording media internally provided with the same number of amplifiers, the same number of read channels and the same number of modulation encoders as the plurality of recording media, and a switch for switching between an internal reproduction output signal line and an input signal line from an external interface. And a signal processing semiconductor device for performing recording / reproduction signal processing. 7. An input / output unit having the same number of input / output units as the plurality of recording media connected to a plurality of recording media, an input / output unit with an interface unit connected to an external device, and an external control input unit. The same number of amplifiers, the same number of read channels and the same number of modulation encoders, a switch for switching between an internal reproduction output signal line and an input signal line from an external interface, and the selection of the plurality of amplifiers, the read channel and the modulation encoder A signal processing semiconductor device for performing a recording / reproducing signal process with the plurality of recording media internally provided with a multiplexer for performing control. And a plurality of recording media connected to a plurality of recording media, the same number of input / output units as the plurality of recording media, an input / output unit for an interface unit connected to an external device, and an external control input unit. The same number of amplifiers, the same number of read channels and the same number of modulation encoders, the matrix switch unit for selecting a plurality of signal lines, and the selection control of the plurality of amplifiers, the read channel and the modulation encoders, and the matrix switch unit A signal processing semiconductor device for performing a recording / reproducing signal process with the plurality of recording media internally provided with a multiplexer for performing the processing. 9. An input / output unit having the same number of input / output units as the plurality of recording media connected to a plurality of recording media, an input / output unit with an interface unit connected to an external device, and a plurality of external control input units,
The same number of amplifiers, the same number of read channels, and the same number of modulation encoders as the plurality of recording media, the matrix switch section for selecting a plurality of signal lines, and the selection of the plurality of amplifiers, the read channel, and the modulation encoder A signal processing semiconductor device for performing a recording / reproducing signal process with the plurality of recording media internally provided with a multiplexer for performing control. 10. A signal processing apparatus comprising: the semiconductor device according to claim 4; a plurality of recording media connected to the semiconductor device; and an interface unit. 11. A plurality of recording media connected to a plurality of recording media, the same number of input / output units, a plurality of external control input units, the same number of amplifiers and the same number of read channels as the plurality of recording media, and the number of read channels. A signal processing semiconductor device for performing recording / reproducing signal processing with the plurality of recording media internally provided with the same number of modulation encoders as the plurality of recording media to which the output of the read channel is input. 12. A signal processing device comprising: the signal processing semiconductor device according to claim 11; and a plurality of recording media connected to the signal processing semiconductor device. 13. An input / output unit having the same number of input / output units as connected to a plurality of recording media and an external input / output unit,
The same number of amplifiers and the same number of read channels and the same number of modulation / encoders as the plurality of recording media; the asynchronous transfer mode transmission processing unit having the outputs of the plurality of read channels as inputs; A signal processing semiconductor device for performing recording / reproduction signal processing with the plurality of recording media, which internally includes an asynchronous transfer mode reception processing unit for outputting. 14. A signal processing device comprising: the semiconductor device according to claim 13; a plurality of recording media connected to the semiconductor device; and an asynchronous transfer mode input / output unit.