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Computing method of safety clock and terminal

A computing method and clock technology, applied in computing, computer security devices, instruments, etc., can solve problems such as abuse, increase power consumption and usability of mobile terminals, and achieve the effect of reducing interaction

Active Publication Date: 2011-01-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the prior art, there is a method of implementing a secure clock by offsetting the current device time of the mobile terminal using the mobile TV and the device time during the registration process. If the user does not change the system time of the mobile terminal, then this method is feasible However, when the user modifies the system time or the system time is abnormal, the RO will still be abused; for example, the mobile TV content purchased by the user expires on August 1, 2010, and the current time is August 2010 On August 2, the user adjusts the system time of the mobile terminal to any day before August 1, 2010, and the mobile terminal can still play scrambled streaming programs
In addition, there is another method to synchronize with the network clock source through the Network Time Protocol (NTP). This method requires the mobile terminal to keep communicating with the network at all times, so the power consumption and availability of the mobile terminal will be greatly increased.

Method used

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  • Computing method of safety clock and terminal
  • Computing method of safety clock and terminal
  • Computing method of safety clock and terminal

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Embodiment Construction

[0031] The basic idea of ​​the present invention is: when watching a TV program protected by digital rights management (DRM), the terminal calculates the safe clock.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] The terminal in this embodiment is a terminal supporting a DVB-H mobile TV, for example, a mobile terminal capable of receiving DVB-H mobile TV signals, an MP4 handheld TV or a GPS handheld TV, and the like.

[0034] The invention provides a calculation method of a safe clock, figure 1 is a schematic flow chart of the calculation method for realizing the safe clock in the present invention, as figure 1 As shown, the method includes the following steps:

[0035] Step 101, the terminal registers with the DRM server, obtains and saves the current DRM time;

[0036]Specifically, when the terminal communicates with the DRM server, that is, the copyright holder of th...

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Abstract

The invention discloses a computing method of a safety clock, comprising the following steps: when watching the TV programs protected by digital rights management (DRM), a terminal computes the safety clock according to the difference between two latest obtained TV clocks, the difference between the two-time latest recorded boot time and the obtained DRM time. The invention also provides the terminal. The safety clock of the terminal is simply and rapidly updated according to the technical scheme of the invention.

Description

technical field [0001] The invention relates to the field of mobile TV services of terminals, in particular to a calculation method of a safe clock and a terminal. Background technique [0002] Digital Video Broadcasting Handheld (DVB-H, Digital Video Broadcasting Handheld) standard is a transmission standard specified by the Digital Video Broadcasting (DVB, Digital Video Broadcasting) organization to provide multimedia services to terminals through terrestrial digital broadcasting networks. It was officially adopted by the European Telecommunications Standards Institute (ETSI, European Telecommunications Standards Institute) in November 2004, and is widely used in countries in Europe, Asia and Africa. When using the mobile TV service, the operator of the mobile TV service needs to ensure that the users of the DVB-H standard mobile TV service who pay normally can see the scrambled stream program except the clear stream program, and also need to ensure that the users who do n...

Claims

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Application Information

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IPC IPC(8): H04N7/14H04N7/16H04L7/00G06F21/00
CPCH04N21/4627
Inventor 梁洁辉施元庆彭叶斌
Owner ZTE CORP
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