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Software upgrading circuit module of TV set

A software upgrade and circuit module technology, applied to color TV parts, TV system parts, TVs, etc., can solve the problems of slow upgrade speed and low efficiency, and achieve faster upgrade speed, high feasibility, and improved production efficiency effect

Active Publication Date: 2006-02-22
HISENSE +1
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of slow upgrade speed and low efficiency caused by upgrading the FLASH chip of the TV through the serial port in the prior art, the present invention provides a new type of software upgrade circuit module of the TV. The I / O port of the parallel port simulates the IIC bus, so that it is connected to the IIC bus of the VGA socket or the DVI socket in the TV to realize the communication with the main processing chip, and then it is convenient to program the FLASH chip in parallel. Write, thus speeding up the software upgrade speed and improving production efficiency

Method used

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] figure 1 Among them, the parallel port of the computer is connected with the parallel port access device of the software upgrading circuit module of the present invention, utilizes the I / O port of the parallel port to simulate the IIC bus, receives the clock signal and the data signal output by the computer, and then realizes it by the control circuit inside the upgrading module The level conversion of the bus data, under the control of the multi-way switch selection circuit, select one of the VGA interface or DVI interface to realize the communication with the main processing chip of the TV, and then control the FLASH chip in the TV through the main processing chip to parallel The writing speed of the program is twice that of the RS232 serial port, which can save half the upgrade time. In addition, a VGA test circuit and a DV...

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Abstract

The invention discloses a software upgrading circuit module. The invention spurns the traditional serial port software upgrading mode, uses the parallel port upgrading mode, uses the I / O port with parallel 25 pins of computer to simulate the IIC bus, uses the control circuit of software upgrading circuit module to realize the switch from the positive logic bus data signal to the passive logic bus data signal, and uses the IIC bus of VGA or DVI plug of TV set to realize the communication between the main processing chips of the computer and TV set, so the writing program in parallel mode by controlling the FLASH chip is easy, while the upgrading speed of software and the producing efficiency are improved. The inventive software upgrading circuit module has simply design and high practicality. In addition, by setting the jump device of said module, any one of TV plugs can be selected to upgrade, so the versatility of said system is guaranteed.

Description

technical field [0001] The invention relates to a software upgrading circuit, in particular to a parallel port upgrading circuit module specially designed for accelerating the software upgrading speed of a TV set. Background technique [0002] With the widespread promotion of flat-screen TVs and the increasing popularity of consumption, the software of TV sets is not only more and more complicated, but also has a fast update speed. During production, the phenomenon that the FLASH chip needs to be upgraded is often encountered, and the upgrade task is very large. In the past, software upgrades were usually downloaded and updated through the serial port of the computer. The serial port upgrade took a long time and the production cycle was slow, which affected the production efficiency and was not conducive to mass production of products. Contents of the invention [0003] In order to solve the problem of slow upgrade speed and low efficiency caused by upgrading the FLASH chi...

Claims

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Application Information

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IPC IPC(8): H04N5/44G06F13/40H04N21/41
Inventor 李威王显刚刘风雷邱圣龙周建勇张明龙刘一
Owner HISENSE
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