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Camera programm inspecting and updating method

An update method and camera technology, which can be applied to program control devices, program loading/starting, software testing/debugging, etc., and can solve problems such as unguaranteed, unsure program errors, problems caused by main program execution, etc.

Inactive Publication Date: 2008-05-14
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantages of this method are: first, it is impossible to know exactly what part of the program is wrong, so the entire main program must be rewritten once; second, even if the comparison results are consistent, it cannot be guaranteed that there is no error at all
That is, even if the sum check is OK, the main program execution will still cause problems

Method used

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  • Camera programm inspecting and updating method
  • Camera programm inspecting and updating method
  • Camera programm inspecting and updating method

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Embodiment Construction

[0029] figure 1 It is a flowchart of a preferred embodiment of the camera program detection method of the present invention. In this embodiment, the detection method is used to detect a camera main program. A check-ready copy of the main program is stored in a memory of a camera. The memory can be a NAND type or NOR type flash memory. Such as figure 1 As shown, this process includes the following steps:

[0030] Step 11: loading a correct copy of the main program into a buffer memory of the camera;

[0031] Step 12: comparing the correct copy in the buffer memory with the waiting copy in the memory;

[0032] Step 13: If a wrong part of the copy to be checked is found, update the wrong part according to the correct copy; and

[0033] Step 14: Repeat steps 12 and 13 for the wrong part until the wrong part is correct.

[0034] In the foregoing steps, the buffer memory may be a synchronous dynamic random access memory (SDRAM) to speed up the access speed. In step 12, when ...

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Abstract

A method for detecting and updating program of camera includes loading a correct copy of program of camera into buffer storage of camera, comparing correct copy in said buffer storage with copy to be detected in storage of camera and updating error porting according to correct copy if error portion in copy to be detected is discovered.

Description

technical field [0001] The invention relates to a camera program, in particular to a method for detecting and updating a camera program. Background technique [0002] Digital cameras are very common digital products nowadays, and usually have a built-in main program (maincode) for integrating the operation of various functions of the camera and providing related operation interfaces. Generally, before the digital camera leaves the factory, the manufacturer will pre-write the main program into the memory in the camera (commonly such as flash memory (flash memory)). However, in the production line, this writing process may cause damage or error to part of the data written in the main program due to accidental electrical damage, resulting in unexpected crashes or abnormal phenomena of the camera. [0003] For this kind of problem, in the traditional way, it is mainly to detect errors by randomly inspecting each batch of shipped products, or adding a checksum mechanism in the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/36G06F9/445H04N5/225
Inventor 蔡忠育陈淑惠
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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