Device for storing and reproducing audio and/or video

A kind of equipment and audio technology, which is applied in the field of equipment for storing and reproducing audio and/or video data, and can solve problems such as illegal copying of data and unusability

Inactive Publication Date: 2003-02-19
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of these devices is that the user has access to digital audio and / or video data, which leads to the aforementioned possibility of illegal copying and distribution of said data
Furthermore, reproducing devices need to follow the given technical standards regarding coding, with the result that they have to adapt to every technical improvement, otherwise they cannot take advantage of these improvements

Method used

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  • Device for storing and reproducing audio and/or video
  • Device for storing and reproducing audio and/or video
  • Device for storing and reproducing audio and/or video

Examples

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Embodiment Construction

[0024] figure 1 Components of a system for reproducing audio and / or video data are presented. On the one hand, the system comprises a removable storage medium 1 for storing and providing data comprising audio and / or video data in encoded digital form. Encoding is, for example, MP3 compression of audio data.

[0025] On the other hand, the system comprises a reproduction device 2 having a decoder 4 for decoding the retrieved data from the semiconductor memory 3, for digital-to-analog conversion of digital data into analog useful signals device 5, and amplifier 6 and loudspeaker 7.

[0026] Since the removable medium 1 in known devices only stores (encoded) audio and / or video data, there may be incompatibility between the data on the medium and the decoder 4 in the reproduction device 2 . There is a case, for example, when the latest data is stored, the decoder 4 does not know the technically more advanced format.

[0027] On the contrary, according to the figure 2 In the ...

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PUM

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Abstract

A device for storing and reproducing audio and / or video data includes a semiconductor memory (3) for storing the data in difference form and a conversion unit (4, 5) capable of converting the digital audio and / or video data into analog signals suitable for reproducing apparatuses. Preferably, only analog useful signals issuing from the conversion unit appear on the output lines. Thus, the user does not have access to the original digital data, which precludes unauthorized copying of the digital audio and / or video data. The processing logic connected to the semiconductor memory is preferably configurable in different manners so as to allow the medium to be tailored to the customer's ideas about features and quality when it is purchased.

Description

field of invention [0001] The invention relates to a device for storing and reproducing audio and / or video data comprising a semiconductor memory for storing the data in digital form. technical background [0002] In view of the achievable advantages in terms of quality, audio and video data are increasingly stored and processed in digital form. Typically, the audio and video data is then stored on an optical or magnetic storage medium such as, for example, a CD, DVD or video cassette. The data can be retrieved and reproduced audibly and visually by placing the storage medium in an appropriate playback device, such as a CD player. [0003] Another technical advantage of digitally encoding audio and video data is that they can be easily copied without loss of quality. Such a copying device poses a substantial problem economically, since it may cause unauthorized copying which infringes copyright. [0004] To this end, methods have been developed for protecting digital info...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/907G06F1/00G10L19/00G10L19/02G11B20/00G11C7/16
CPCG11B20/00086G11B2020/00057G11C2207/16G11B20/00818G11B2020/10537G11C7/16G11B20/04
Inventor E·M·A·蒂德里克斯F·尤藤博加尔德
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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