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Recording medium reproducing apparatus and method and recording medium recording, reproducing apparatus

A recording medium and reproducing device technology, applied in digital recording/reproduction, optical recording/reproduction, data recording, etc., which can solve the problems of increased power consumption, low digital signal, and inability to reproduce sound quality to express satisfaction, etc. To achieve the effect of preventing illegal copying and preventing degradation

Inactive Publication Date: 2003-12-31
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the user cannot clearly recognize that the quality of the digital signal output from the player is low, he or she will not be able to express satisfaction with the quality of the reproduced sound of the digital output signal output from the player
On the player side, a signal processing section such as a down-converter that determines quality is required, so the hardware will become complicated and its power consumption will increase

Method used

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  • Recording medium reproducing apparatus and method and recording medium recording, reproducing apparatus
  • Recording medium reproducing apparatus and method and recording medium recording, reproducing apparatus
  • Recording medium reproducing apparatus and method and recording medium recording, reproducing apparatus

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Embodiment Construction

[0015] Embodiments of the present invention will be described below. According to this embodiment, the present invention is applied to an optical disc. In FIG. 2, reference numeral 21A denotes an example of an optical disc as a recording medium according to the present invention. The optical disc 21A has two signal recording layers R1 and R2. A reproduction laser beam is incident from one side of the optical disc 21A, and when the laser beam is focused on the signal recording layers R1 and R2, data can be read from the signal recording layers R1 and R2.

[0016] In FIG. 3, reference numeral 21B denotes another example of an optical disc as a recording medium according to the present invention. In FIG. 3, an optical disc 21B has two recording areas. That is, the recording area is divided into two parts in the radial direction, and the divided parts are referred to as a first recording area PA1 and a second recording area PA2. The lead-in area LI1 is located on the outer edg...

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Abstract

A recording medium reproducing method of a recording medium is disclosed, containing at least content data of first quality and content data of second quality which is lower than the first quality. In a reproduction mode of the recording medium, the content data of the first quality is read from the recording medium and after decoding the content data of the first quality which has been read out, the decoded data is output as output data.

Description

technical field [0001] The present invention relates to a recording medium reproducing device and its method, and a recording medium recording and reproducing device. In particular, it relates to an apparatus and method for recording content data, such as digital audio signals, to a recording medium having a relatively large storage capacity. Background technique [0002] In recent years, discs corresponding to the SACD (Super Audio CD: Registered Trademark) standard and DVD (Digital Versatile Disc or Digital Video Disc) audio that allow higher-quality digital audio data to be recorded than so-called CDs (Compact Disc) Standard discs are already on the market. As far as copyright protection is concerned, digital audio signals are allowed to be output from those discs only if they have been down-converted to a signal of lower quality than that of CDs. [0003] Figure 1 shows the external structure of a player corresponding to the traditional DVD-Audio standard. Reference n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/14G06F21/10G10L19/00G10L25/51G11B7/00G11B20/00G11B20/10
CPCG11B20/00086G11B20/0021G11B20/00362G11B20/10G11B20/00115G11B20/00478G11B20/00818G11B7/00
Inventor 佐古曜一郎
Owner SONY CORP