JPH01100623A - Optical disk processor - Google Patents

Abstract

PURPOSE:To improve an effective data transfer ability by providing a first data buffer for a master and plural second data buffers corresponding to plural optical disk device portions. CONSTITUTION:The first data buffer 2 transmits and receives the data from a host device 1 and the data between the second data buffers 61-6n. The second buffers 61-6n are applied time-division by a selector 5, separately connected to the first data buffer 2, the data from the first data buffer 2 are received, the writing data to optical disk devices 101-10n are stored, the reading data from the optical disk devices 101-10n are received, the data are transmitted to the first data buffer 2, and the data from the host device are transmitted at high speed, and even if the data transfer ability between the optical disk is low, the data transfer between the host device 1 is not interrupted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical disc processing device, and more particularly to an optical disc processing device that performs high-speed data transfer with a host device.

[Conventional technology]

As shown in FIG. 4, a conventional optical disk processing device of this type includes a data buffer 32, an FCC encoder 33, a write control circuit 34, a parallel-to-serial conversion circuit 35, and a demodulation circuit 3.
7. One serial-parallel conversion circuit 38 and one ECC decoder 39 were used.

[Problem that the invention seeks to solve]

The conventional optical disk processing device described above has a host device 31.
Effective data transfer speed with optical disk device 36□, 36
□...3611, especially the optical disk devices 361, 362...36rl have a lower data transfer rate than magnetic disk devices or magnetic tape devices, The drawback is that even though data transfer speeds have been increased, the throughput of the entire system has not been improved.

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical disc processing device that solves the above problems.

[Means for solving problems]

The present invention provides multiple write/read methods for writing and reading data to and from an optical disk device based on commands from a host device.
A first device that collectively transmits and receives data to and from the plurality of optical disk devices between a reading circuit and the host device.
a plurality of second data buffers that individually transmit and receive data between the data buffers and the write/read circuit; The present invention is an optical disc processing device characterized by having a selector connected to a buffer.

〔Example〕

Hereinafter, the present invention will be explained with reference to the drawings.

In FIG. 1, the present invention includes a plurality of write/read circuits that write and read data to and from optical disk devices 101-10° based on commands from a host device 1, and a plurality of optical disk devices 10□-10. A first data buffer 2 that collectively transmits and receives data to and from the host device 1, and a plurality of second data buffers 61 to 61 that individually transmit and receive data between the write/read circuit and the host device 1.
6o, a selector 5 that connects the plurality of second data buffers 6□ to 6Il individually to the first data buffer 2 in a time-sharing manner, a first microprocessor 3, and a plurality of second data buffers 6□ to 6Il.
It has 4□ to 4 microprocessors.

The write/read circuits include FCC encoders 71 to 7I1. Write control circuits 81 to 8Il, parallel/serial conversion circuits 91 to 9n, demodulation circuits 11□ to 1111. Serial-to-parallel conversion circuits 121 to 1211. ECC decoder 13
It consists of □~13°.

Further, the selector 5 may have either a mechanical structure or an electronic structure.

The host device 1 performs high-speed data transfer between the optical disk devices 101 to 1o and l. First data buffer 2
transmits and receives data from the host device 1 and transmits and receives data to and from the second data buffers 61 to 6o. The first microprocessor 3 controls the operation of the entire system of the processing device. The second microprocessors 4□ to 4n control the data processing of the optical disk devices 101 to 1oI, and the second data buffers 61 to 6□ receive data from the first data buffer 2 and control the data processing of the optical disk devices 101 to 1oI.
0Ill, and also receives read data from the optical disk devices 100 to 10n,
Data is transmitted to the first data buffer 2. E.C.C.
Encoders 71 to 7n generate error correction codes and add them to write data. The write control circuit 8□~card generates a recording format and modulates data. The parallel/serial conversion circuits 91 to 9n convert byte parallel data to bit serial data and transfer the data to the optical disk devices 101 to 1ol.

Demodulation circuit 11. ~lln is an optical disk device lo1~10
demodulate the n data. Serial-to-parallel conversion circuit 12□~1
2° converts bit serial data to byte parallel data. ECC decoders 131 to 13° correct errors in read data.

A case will be described in which data is written to an optical disk device using the circuit of the present invention. First, in data writing, data from the host device 1 is transferred to the first data buffer 2, and data is read from the first data buffer 2 according to a command from the first microprocessor 3, and the data buffers 61 to 6Il At the same time, a command is given to the frame master processor 4□, and a write instruction to the optical disk device 1o□ is given. Next, when a certain amount of data is read from the first data buffer 2, the first microprocessor 3 stores the data in the second data buffer 6°, and at the same time gives a command to the second microprocessor 4°, and the optical disc device 1011 Give instructions to write to.

FIG. 3 shows the main signals shown in FIG. 1 and shows how data is transferred. Signal 101 is a high-speed write data signal from the host device. A signal 201 is a write data sending signal from the first data buffer 2 to the second data buffer 61. Signal 202 is the first data buffer 2
This is a write data sending signal from to the second data buffer 611. A signal 301 is a valid signal for reading data from the first data buffer 2 and sending write data to the second data buffer 6□. When this signal is ON, the signal 201 becomes valid. When this signal turns ON, it gives a command to the microprocessor 41 and
The write start signal 401 to 01 turns ON, the data signal 601 from the data buffer 6□ is output, and the data
The data is the FCC encoder 7□, the write control circuit 81. It passes through the parallel-to-serial conversion circuit 9□ and is written to the optical disk device IO□.

Signal 302 is a valid signal for reading data from data buffer 2 and sending write data to data buffer 6Il. When this signal is ON, signal 202 becomes valid. Also, when this signal turns ON, the microprocessor 4f
1, the write start signal 501 to the optical disk device 10n is turned ON, and the data buffer 6! A data signal 1401 is output from FCC encoder 71.1. Write control circuit 8nl parallel-serial conversion circuit 9r
1 through the optical disc device 10. Figure 2 shows data buffer 2 and data buffers 61 to 6.
A conceptual diagram of data storage addresses of Il is shown.

The contents of the data buffer 6□ are written to the optical disk device 101, and the contents of the data buffer 6□ are written to the optical disk device 10. written to l.

Now, in FIG. 3, a write data signal 101 from the host device 1 is a write signal 601 to the optical disk device.
Or, the data transfer speed is faster than 1401, but if there are n optical disk devices, the data transfer speed with the host x 1
An optical disk device with a speed of /n can receive data using this signal without interrupting the write data signal 101 from the host device 1. Reproduction of data from an optical disc device can be similarly explained.

〔Effect of the invention〕

As explained above, the present invention has a first data buffer for masking and a plurality of second data buffers corresponding to a plurality of optical disk devices, so that data can be transferred from a host device at high speed. Even if the data transfer capability with the optical disk is lower than that with the host device, the effective transfer capability can be improved without interrupting the data transfer with the host device.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the present invention in a block diagram;
FIG. 2 is a conceptual diagram showing the data storage relationship between the first data buffer and the second data buffer, FIG. 3 is a timing chart showing the operation of the present invention, and FIG. 4 is a diagram showing a conventional optical disk processing device. FIG.

Claims (1)

[Claims] (1) A plurality of write/read circuits that write and read data to and from an optical disk device based on commands from a host device, and a circuit that collectively transmits and receives data to and from the plurality of optical disk devices between the host device and the host device. 1 data buffer, a plurality of second data buffers that individually transmit and receive data between the write/read circuit, and a plurality of second data buffers that are time-divided and individually connected to the first data buffer. An optical disc processing device comprising: a selector connected to a data buffer.