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Electronic device and method for communicating with external connection module

An electronic device and external connection technology, applied in the direction of image communication, television, electrical components, etc., can solve the problems that products cannot be used with each other, sacrifice device compatibility, limit user choice, etc.

Inactive Publication Date: 2007-10-31
QISDA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of using a dedicated video interface 206 is that it sacrifices device compatibility
Usually different manufacturers will use their own designed dedicated interfaces, thus making the products of different manufacturers unable to use each other, thus limiting the user's choice

Method used

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  • Electronic device and method for communicating with external connection module
  • Electronic device and method for communicating with external connection module
  • Electronic device and method for communicating with external connection module

Examples

Experimental program
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Embodiment Construction

[0047] FIG. 3 shows an electronic device 300 and an external module 320 according to a specific embodiment of the present invention. The electronic device 300 has a signal processing circuit 302 , a control circuit 304 , a memory 305 , a power supply 306 , and a transmission interface 308 . The external module 320 has a module interface 322 , an identification circuit 324 and an external module circuit 323 . The electronic device 300 communicates with the external module 320 through the transmission interface 308 . In this embodiment, the electronic device 300 is a projector, and the external module 320 can be an audio system, a component terminal, an infrared remote controller, or an Ethernet network interface circuit. The electronic device 300 transmits / receives various signals with another device (such as a notebook computer) through the external module 320 . However, those skilled in the art will know that the present invention can also be applied to other various device...

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PUM

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Abstract

The invention discloses an electronic device and method which communicates with external module. The electronic device possesses a first group of signal transmitter; a second group of signal transmitter and a third group of signal transmitter, and the electronic device possesses a preset value. The method includes following steps: (1) when the external module is not coupled to the electronic module, the first group of signal transmitter and the second group of signal transmitter can be used to transmit a data signal; (2) when the external module is coupled to the electronic module, (a) the third group of signal transmitter transmits a inquiring signal to the external module; (b) when the third group of signal transmitter receives a affirming signal of the external module; and (c) if the affirming signal inosculates the preset value, the second group of signal transmitter transmits electricity power to the external module.

Description

technical field [0001] The present invention relates to an electronic device and method for communicating with an external module, in particular to an electronic device and method for determining whether to transmit power to the external module by comparing a confirmation signal with a preset value. Background technique [0002] Various information electronic products have been widely used at present, and various applications have been proposed one after another. FIG. 1 shows a known electronic device and its application. The projector 100 is connected to a notebook computer 120 through a cable 110 to transmit video signals. At this time, the notebook computer 120 transmits the video signal to the projector 100 through the connecting cable 110 , and projects the image onto the screen 130 through the projector 120 . This application has been widely used in various occasions such as newspaper clippings, speeches, product announcements and descriptions. However, because the ...

Claims

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Application Information

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IPC IPC(8): H04N5/765G06F3/14G09G5/00
Inventor 张为钧
Owner QISDA CORP