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Optical disk device, pickup device and method for controlling optical transmission operation

An optical disc device and laser emission technology, which are applied in the field of optical disc device control of light emission operation and control of light emission operation, can solve the problems that it is difficult to obtain suppression of temperature, rise, temperature rise of laser emission part, etc., so as to shorten the driving time, suppress the Effects of power consumption and life extension

Inactive Publication Date: 2004-12-01
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the heat generated by the drive unit will cause the temperature of the laser emitting part to rise
Thus, it may be difficult to obtain the effect of suppressing the temperature rise

Method used

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  • Optical disk device, pickup device and method for controlling optical transmission operation
  • Optical disk device, pickup device and method for controlling optical transmission operation
  • Optical disk device, pickup device and method for controlling optical transmission operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] figure 1 An optical disc device 100 according to Embodiment 1 of the present invention is shown. figure 2 , 3 and 4 are timing charts for explaining the operation of the optical disc device 100 .

[0063] For simplicity, figure 1 Only main components constituting the present invention are shown. Other components of the optical disc device are omitted and their descriptions are omitted.

[0064]An optical disc 101 is mounted on the optical disc device 100 . As for the optical disc 101, the optical disc device 100 performs at least one of data recording and reproducing operations, that is, the optical disc device 100 may be a recording device, a reproducing device, or a recording / reproducing device. Into the guide groove of the optical disc 101, information such as user data or the like is recorded. Address information is pre-recorded on the optical disc 101 by wobbling the guide groove of the optical disc 101 .

[0065] The optical disc device 100 includes a disc...

Embodiment 2

[0110] In Embodiment 2, the operations of the optical head section 103, the laser control section 104, the signal generating section 112, and the like in the optical disc device 100 will be further described.

[0111] Figure 5 and 6 are schematic diagrams showing the optical head section 103 and the laser control section 104, and their external components. The optical disc device 100 of Embodiment 2 is designed to include some components similar to those of conventional optical disc devices, and is designed to perform the intermittent idling of the present invention. Thus, the time period and manufacturing cost required for developing an optical disc device can be reduced.

[0112] exist Figure 5 among those with figure 1 The same parts are denoted by the same reference numerals. The optical disc 101 includes a substrate, a recording film, and a protective layer 101C. Grooves (guide grooves) 101G and lands 101L between each groove are formed on the recording film. The ...

Embodiment 3

[0128] Figure 7 is a block diagram showing an imaging device 400 including an optical disk drive section according to Embodiment 3 of the present invention. This imaging device 400 can be called an optical disc device having an imaging function.

[0129] The intermittent idle of the present invention is particularly effective when video data is compressed and recorded onto an optical disc. This is because even when the data processing speed for the optical disc is close to the writing speed, it is possible to achieve low power consumption and suppress temperature rise without stopping the operation of the optical disc device. According to this embodiment, it is possible to provide a convenient image pickup device which utilizes the random access property of the optical disk and has excellent temperature resistance.

[0130] The camera device 400 includes a disc drive section 401, a camera section 402, a video processing section 403, a video display section 404, a buffer mem...

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PUM

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Abstract

An optical disc apparatus is provided, which comprising a laser light emitting portion for generating laser light for irradiating an optical disc, and a laser control portion for controlling a light emission operation of the laser light emitting portion. The laser control portion causes the laser light emitting portion to emit light with a first period during a first operation, and the laser control portion causes the laser light emitting portion to emit light with a second period during a second operation. The first period and the second period are different from each other.

Description

[0001] This non-provisional application claims priority under 35 U.S.C.S119(a) to Patent Application No. 2003-130105 filed in Japan on May 8, 2003, the entire contents of which are hereby incorporated by reference . Technical field: [0002] The present invention relates to an optical disc device, a camera device and a method for controlling a light emitting operation. In particular, the present invention relates to an optical disc device, camera device and method for controlling light emitting operations in which power consumption and temperature rise due to a laser emitting portion provided on an optical head portion are suppressed. Background technique [0003] In recent years, the development of technology for writing data on phase-change rewritable optical discs using blue laser light and an objective lens with a high numerical aperture (NA) such as 0.85 has reached close to having a diameter as small as about 5 to 8 cm At the level of an optical disc, the disc can sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/125
CPCG11B7/126A61H23/0218A61H23/006A61H2201/0169
Inventor 石桥谦三吉川昭一之濑亮后藤克巳行正隆俊
Owner PANASONIC CORP