Optical disc apparatus with multiple reproduction/record units for parallel operation

A recording unit and optical disc technology, which is applied to the recording of information on the magnetic disc, the input/output to the record carrier, and the recording/reproducing by optical methods, etc., can solve the problems of complex setting conditions, etc. Easy to connect effects

Inactive Publication Date: 2005-06-08
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, playback / recording operations occur asynchronously between the two systems, further complicating setting conditions

Method used

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  • Optical disc apparatus with multiple reproduction/record units for parallel operation
  • Optical disc apparatus with multiple reproduction/record units for parallel operation
  • Optical disc apparatus with multiple reproduction/record units for parallel operation

Examples

Experimental program
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Embodiment Construction

[0036] figure 1 Shown is a block diagram of an optical disc device as an embodiment of the present invention.

[0037] The optical disc apparatus 1 writes (records) data into and reads (reproduces) data from one optical disc 10 using two optical pickup units 12 (12A and 12B). The optical disk 10 is held by a disk holding mechanism (not shown) including a turntable and the like, and driven to rotate by a spindle motor 11 .

[0038] The optical pickup unit 12A is connected to an analog front-end circuit 13A and a signal processing unit 14A. The internal buffer memory 15A is connected to the signal processing unit 14A. The optical pickup unit 12A, the analog front-end circuit 13A, the signal processing unit 14A, and the buffer memory 15A constitute a system A of reproducing / recording units.

[0039] The optical pickup unit 12B is connected to an analog front-end circuit 13B and a signal processing unit 14B. Another internal buffer memory 15B is connected to the signal process...

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Abstract

A disk drive device configured to drive an optical disk while communicating with a host device. The disc drive device is composed of the following components: a rotary driving part, which rotationally drives an optical disc; a plurality of reproducing / recording units connected in parallel to each other, for writing or reading information on the optical disc; a control part, which controls the rotary driving part, and controlling the plurality of reproduction / recording units simultaneously and independently of each other; and an input / output port connecting the plurality of reproduction / recording units to the host device. Each reproducing / recording unit includes: an optical pickup for irradiating a beam of light to write or read information on the disc; an analog front-end circuit for processing information to be input to or picked up from the optical pickup The form of the analog signal output by the device; the digital processing part, which is connected to the analog front-end circuit, is used to process the information into the form of digital data; and the host interface, which is used to control the connection between the digital processing part and the host device through the input / output port communication.

Description

technical field [0001] The present invention relates to an optical disc device that enables high-speed writing or reading of data from an optical disc. Background technique [0002] A conventional optical disc device is configured to perform a reproducing / recording operation of information on the optical disc using one optical head (a reproducing / recording unit) per optical disc. Recently, the speed of reproducing / recording operation has been greatly increased several to several tens of times than the standard speed of reproducing / recording operation. However, using only one optical head limits the reproduction / recording speed, and takes a long time for the reproduction / recording process on a large-capacity optical disk such as a digital versatile disk (DVD). [0003] In recent years, optical disc devices having a plurality of optical heads have been proposed, as disclosed in Patent Documents 1 and 2, for example. [0004] According to the device in Patent Document 1, two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F3/08G11B7/00G11B7/004G11B7/14G11B19/02G11B20/10
CPCG11B7/14G11B19/02G11B2007/0006
Inventor 村田守启
Owner YAMAHA CORP
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