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Switching method of projection TV set

A technology for TVs and switches, applied in the parts of color TVs, parts of TV systems, TVs, etc., can solve problems such as shortening the service life of TV sets, damage to machines and optics, and shortening the sense of waiting time, Avoid damage, clear effect of switching on and off process

Inactive Publication Date: 2006-06-28
HISENSE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such frequent hard switching will inevitably cause great damage to the machine's optics and shorten the service life of the TV.

Method used

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  • Switching method of projection TV set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1. A method for turning on and off a projection TV, the schematic diagram of which is shown in the circuit figure 1 .

[0016] It includes the following steps:

[0017] (1) On the video key, menu key, volume down key, volume up key, program down key and program plus key of the TV, indicator lights LED1-LED6 linked with the keys are set;

[0018] (2) Connect the positive poles of the above-mentioned indicator lights LED1-LED6 to the I / O port of the TV main chip one by one, and connect the positive poles to +5V voltage through the pull-up resistors R1-R6 one by one, and ground the negative poles;

[0019] (3) Set the properties of the I / O port of the main chip through the software and the internal timer, so that when the I / O port is "I input", the indicator LED of the I / O port is on, and the I / O port is "O output" The indicator LED of the I / O port is off;

[0020] (4) Use the internal timer and software to control the "on" and "off" states of a row of button i...

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Abstract

This invention relates to a switch method for an overhead projecting TV set including setting indication lamps on the video keys, connecting the positives of the indication lamps with the I / O interface of a primary chip one by one and connected with a 5V voltage via a pulling up resistor one by one and their negatives are connected with the earth, setting the attribute of the I / O interface by the software and an internal timer to let the indication lamps bright when the I / O interface is 1 and the lamps are turned off when the interface is O so as to control the on / off states of a row of key indication lamps to realize the aim of turning on or off the lights orderly and alternately.

Description

technical field [0001] The invention belongs to the technical field of projection televisions, and more specifically relates to an improvement of a method for turning on and off a projection television. Background technique [0002] In traditional projection TVs such as DLP and LCOS, since the projection bulbs used need to be preheated, it generally takes a long time to start and shut down. During this waiting period, because there is no obvious instruction, some users who are not familiar with the product features may mistakenly think that the machine has crashed and cut off the power, and restart the switch operation. Such frequent hard switching will inevitably cause great damage to the machine's optics and shorten the service life of the TV. Therefore, the switching process of this type of product should be dynamically displayed. Contents of the invention [0003] The object of the present invention is to overcome the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/63H04N5/44H04N5/445
Inventor 刘影疏
Owner HISENSE
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