Interface device between digital signal processor and standard computer keyboard

A digital signal and interface device technology, applied in the field of electronics, to achieve the effect of simple hardware interface, easy software, and large selection of keyboards
CN1728052AInactive Publication Date: 2006-02-01CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Publication Date
2006-02-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

An interface for digital signal processor to standard computer keyboard is prepared as connecting four data ports of said processor separately to phase inverter and base electrode of two triodes, connecting phase inverter to two resistances and collecting electrode of two triodes as another end of resistance to power pin of keyboard connector, connecting the collecting electrode of two triodes separately to data and clock pins of keyboard connector and connecting emission electrode of two triodes to power earthing pin of keyboard connector.
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Description

technical field

[0001] The invention belongs to the technical field of electronics and relates to a communication interface technology, in particular to an interface device between a digital signal processor and a standard computer keyboard. technical background

[0002] At present, in the fields of signal processing and digital image processing, digital signal processors (DSP) are used more and more, and the complexity of tasks is also increasing, which requires a good relationship between the operator and the DSP equipment. In the interactive interface, the operator should be able to input relatively rich control and debugging instructions to the DSP equipment.

[0003] At present, the more common DSP device command input methods are only some relatively simple joysticks, simple buttons, mouse, etc., which can meet the requirements for simple DSP applications, but for more complex digital image processing and tracking applications, The operating parameters of DSP equipmen...

Claims

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