Infrared data association system and method for operating infrared data association (IrDA) module in same

A technology of data transmission protocol and operation method, applied in the field of infrared optical data transmission protocol system, can solve the problems of wrong data, transmission failure, data transmission system receiving and so on

Inactive Publication Date: 2011-10-19
KINPO ELECTRONICS +1
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  • Abstract
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Problems solved by technology

The CPU may regard this meaningless signal as a normal transmission signal, thus cau

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  • Infrared data association system and method for operating infrared data association (IrDA) module in same
  • Infrared data association system and method for operating infrared data association (IrDA) module in same
  • Infrared data association system and method for operating infrared data association (IrDA) module in same

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Embodiment Construction

[0025] figure 1 It is a schematic diagram of functional modules of an infrared light data transmission protocol system according to an embodiment of the present invention. figure 2 yes figure 1 A schematic diagram of an implementation example of an IrDA system. image 3 yes figure 2 Schematic diagram of signal timing shown. The IrDA system 100 includes a controller 110 , a clamping circuit 120 and an IrDA module 130 . The IrDA module 130 has a sleep terminal SD, a data terminal RXD and a data terminal TXD. This IrDA module 130 can be any type of IrDA module now or in the future. For example, the IrDA module 130 may be an IrDA module such as software number KOI-6002AE.

[0026] see figure 1 , figure 2 with image 3 , the controller 110 can be a central processing unit (central processing unit, CPU), a digital signal processor (digital signal processor, DSP), a microcontroller (micro-controller), a microprocessor (micro-processor), a programmable logic device (Progr...

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Abstract

The invention provides an infrared data association system and a method for operating an infrared data association (IrDA) module in the same. The IrDA system comprises the IrDA module, a controller and a clamping circuit, wherein the IrDA module is provided with a dormancy end and a data end; the controller is connected to the dormancy end and the data end; and the clamping circuit detects the logic level of the dormancy end, and clamps the data end at a first logic level in a signal invalid period when the logic level of the dormancy end is transited.

Description

technical field [0001] The present invention relates to a data transmission system, and in particular to an infrared data association (hereinafter referred to as IrDA) system and an operation method of the IrDA module. Background technique [0002] When transitioning from sleep mode to active mode, the data terminal RXD of some IrDA modules will transmit a meaningless signal for a short period of time (hereinafter referred to as the signal invalid period). This meaningless signal will enter the central processing unit (CPU). The CPU may regard this meaningless signal as a normal transmission signal, thus causing the data transmission system to receive wrong data or cause transmission failure. [0003] The previous technologies are all improved by means of software. That is to say, during a preset period when the sleep mode transitions to the action mode (that is, during the signal invalid period), the CPU is used to ignore the meaningless RXD signal sent by the IrDA module...

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Application Information

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IPC IPC(8): G06F13/42H04B10/10H05K13/00H04B10/11
Inventor 张全汪
Owner KINPO ELECTRONICS
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