A projector timing method and system

Abstract

The invention discloses a projector timing method and a projector timing system. The timing method is used for timing of a projector. The timing method comprises the following steps: obtaining an authorization file through a network operation center, wherein the authorization file is set projection time information; Decrypting the authorization file to obtain the remaining time available for projection; Judging whether the remaining time length is zero or not, and if so, the projector does not perform a light-on operation; Otherwise, the projector performs a light-on operation and generates apulse signal at the same time; Calculating a usable time length after projection according to the pulse signal, and obtaining a usable time length of projection; A light-on operation is determine whether to continue accord to that length of time the show is available. The hardware encrypted data in the timing module of security chip can not be operated through the interface of the third-party software, which avoids the possibility of tampering with the timing data and improves the security of the projector.

Description

technical field [0001] The invention relates to the field of electronic information, in particular to a timing method and system for a projector. Background technique [0002] Most movie theaters rent projectors from projector manufacturers or third parties. During use, the projector manufacturers or third parties charge fees based on the duration of the projector's use confirmed by the projector's timing system. However, in the existing projector timing system, the timing data is usually written into the program memory directly after being encrypted by software, or is used to record the duration of use by saving some data that needs to be powered off and not lost when the program is running. Due to the software encryption method, It is easy to be rewritten by third-party software, so there is a problem that the timing file is maliciously modified. The security of the projector timing system is low. SUMMARY OF THE INVENTION [0003] An object of the present invention is ...

AI Technical Summary

Problems solved by technology

However, the existing projector timing system usually encrypts the timing data software and directly writes it into the program memory or uses it to save some data that needs to be powered off to record the duration of use when the program is running. Due to the use of software encryption, It is easy to be rewritten by third-party software, so there is a problem that timing files are maliciously modified

Low security of projector timing system

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