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Coding mode suitable for different refrared control signal

A technology of control signal and encoding method, applied in the field of encoding method, can solve the problems of increased hardware cost, large amount of control signal data, and large memory space, and achieve the effect of improving work efficiency and efficiency

Inactive Publication Date: 2005-03-23
ZHEJIANG UNIV
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Problems solved by technology

[0014] Disadvantages: The control signal has a large amount of data, which will occupy a large memory space, and the related hardware cost will be greatly increased, and the data cannot reflect the characteristics of the infrared signal and the correlation between different keys

Method used

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  • Coding mode suitable for different refrared control signal
  • Coding mode suitable for different refrared control signal
  • Coding mode suitable for different refrared control signal

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Embodiment Construction

[0030] The specific embodiments of the present invention will be described below according to the accompanying drawings.

[0031] The width of the pulse and interval of the infrared remote control signal is read by the single-chip microcomputer, and the data is temporarily stored in the memory buffer. The feature code of the remote control signal is obtained according to the scheme of feature code induction, and then the specific value of the function control code is calculated.

[0032] (1) Record of pulse width

[0033] The infrared coding signal is composed of a series of high and low levels. When there is no signal, it is high level, and the start bit must be low. There is a jump every time there is a high-low level transition, and recording the time interval between each jump is equivalent to knowing the width of each pulse and interval. There are many ways to record time intervals, such as loop detection method, external interruption method, etc. During the sampling p...

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Abstract

The invention relates to a encoding method adaptable to various infrared control signals and includes the 5 steps of defining the feature codes, collecting the data, confirming the type of the data, perfecting the data of the feature codes and concluding the data code. The encoding method of the invention has the commonality and can adjust the encoding method of the infrared signal, recognize the modal type of the infrared encoding and increase the work efficiency.

Description

technical field [0001] The present invention relates to a coding method, in particular, the present invention relates to a coding method applicable to infrared control signals in various formats. Background technique [0002] Existing infrared remote control signals all adopt a certain signal encoding method, such as commonly used infrared signals in the form of binary, the difference is only the length of the signal time and the number of digits. Commonly used signal encoding methods are: [0003] 1. Pulse encoding [0004] According to different coding methods of pulse width, Sony (SONY) company adopts this coding method. [0005] 2. Interval coding [0006] According to the way of encoding according to the length of the pulse interval, Panasonic (Panasonic) company adopts this encoding method, which is also often called the REC-80 method. [0007] 3. Convert encoding [0008] The method of encoding according to the change of the pulse and interval time sequence, Phil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/00
Inventor 宋建华张宇燕杜爱明常志华
Owner ZHEJIANG UNIV
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