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Consumer and revocation of their equipment

A consumer and device technology, applied in the field of revocation of consumers and their devices, can solve the problem that device revocation is not easy to be seen

Inactive Publication Date: 2005-02-02
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, device sub-revocations may not be readily apparent, and malicious users may attempt to sell a revoked device at full price without informing potential buyers that the device has been revoked

Method used

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  • Consumer and revocation of their equipment
  • Consumer and revocation of their equipment
  • Consumer and revocation of their equipment

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Experimental program
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Embodiment Construction

[0029]As described above, the present invention provides potential buyers with information about the revocation status of the CE device 60 . A detailed description of exemplary embodiments of the invention, including reference to the accompanying drawings, is provided below. For purposes of describing these embodiments, the term CE device 60 refers to any electronic device used to record, transmit, play or manipulate digital or analog content. These devices include PCs, DVD players and recorders, CD players and recorders, cellular phones, video recorders (VCRs), digital televisions, and more. In these figures, components having similar functions are denoted by the same reference numerals.

[0030] Revocation of CE device 60 usually occurs in two cases: 1) the secret keys of CE device 60 have been disclosed, which can be proved by providing these keys to the device manufacturer, or 2) two or more CE devices Devices 60 have embedded and adopted exactly the same secret key, whi...

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PUM

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Abstract

A system for allowing a potential buyer of second-hand of a CE device (60) to look up an identifier of the device (60) in a revocation list (55), in order to determine if the CE device (60) has been partially or full disabled as a result of revocation. The revocation list (55) may be accessible by a user on-line, e.g., on the Internet, or may be stored in a DVD. The CE device (60) may be equipped with a revocation status indicator 61 that, when activated by the user, causes the CE device (60) to access an on-line revocation list (55), look up its revocation status, and output its revocation status to the user. Alternatively, the CE device (60) may include a revocation status indicator (61) that accesses a tamper-resistant storage mechanism (63) in the CE device (60) to determine and output the revocation status.

Description

technical field [0001] The present invention relates to the use of revocation in consumer electronic equipment to prevent unauthorized copying and distribution of information, and more particularly to methods for ensuring that a user knows the revocation status of a consumer electronic equipment (CE) prior to purchase systems and methods. Background technique [0002] Protecting intellectual property (IP) in digital form is not a new issue. Over the years, much effort has been devoted to preventing the illegal copying and distribution of software applications. However, digitization has extended to many other types of IP. Audio content, such as music and songs, is now commonly recorded and distributed in the form of compact discs (CDs) and MP3 files. Movies are being recorded and distributed as digital versatile discs (DVDs) and streaming video. Other types of IP widely distributed in digital form include images (photographs, paintings, etc.) and text (books, manuscripts,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/10G06F21/60G06F21/62G06F21/64G06Q10/00H04L9/10H04L9/32
CPCG06Q10/10
Inventor A·A·M·L·布鲁克斯A·A·M·斯塔林格
Owner KONINK PHILIPS ELECTRONICS NV