A method and system for time a projector

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 projector manufacturers or third-party projectors for use. During use, the projector manufacturers or third parties charge for the duration of use of the projectors confirmed by the timing system of the projectors. 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. The security of the projector timing system is low. Contents of the invention [0003] The object of the present invention is to provide a projector timing meth...

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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