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Solution method for analog television windowing phenomena on mobile phone

A technology for simulating TV and a solution, which is applied to parts of color TV, parts of TV system, TV and other directions, can solve the problems of screen splitting, inability to synchronize the line and field signals at the starting point, and disorder of field signals, etc. Show full effect

Inactive Publication Date: 2009-05-27
SHANGHAI SIMCOM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, in order to suppress RF interference, the data clock given by the baseband image signal processor does not match the operating frequency of the analog TV chip, causing the field signal received by the baseband image signal processor to be disordered, and the start of each frame of image data The starting point cannot be synchronized with the field signal, resulting in split screens, causing inconvenience to users

Method used

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  • Solution method for analog television windowing phenomena on mobile phone
  • Solution method for analog television windowing phenomena on mobile phone

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Experimental program
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Embodiment Construction

[0012] The invention is suitable for the application of the analog TV chip on the MTK platform (M6226 and M6228). The specific implementation process is as follows:

[0013] Such as figure 2 As shown, the TV image receiving function is realized by running the receiving program. Before entering the TV preview, first initialize the ISP (image signal processor) interrupt register, open the frame receiving interrupt and the field trigger interrupt. When the ISP (Image Signal Processor) interrupt is triggered, go to step S 2000 Image signal processing interrupted. Execute step S 2001 Read the interrupt status of the image module, step S 2002 Determine whether the frame interrupt is enabled (that is, whether a frame is fully received), if so, skip step S 2003 , otherwise go to step S 2003 Enable field-triggered interrupts. Execute step S 2004 , S 2005 , when the ISP is in a busy state and receives a full signal, step S 2006 Add one to the preview frame, step S 2007 Wait...

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Abstract

The invention relates to a solution method for split screen phenomenon of analog television on a mobile phone. Based on an MTK platform, the method comprises the following steps: S1, firstly, setting each register of a base band image signal processor to acquire size and frame frequency of an image, and setting color of a first point; S2, providing an LCD display area by an upper human-computer interactive interface program, and calculating line number of each field; S3, turning on the television to receive data, when a frame fully receives the data, sending the data to a direct memory access controller (DMAC), and triggering the DMAC by hardware to inform a liquid crystal display screen of updating display; and S4, setting a timer, and newly capturing signals of lines and fields of television images to reach complete and smooth image display. The method has the advantage that the method reliably solves the problem of split screen when playing analog television on the mobile phone.

Description

technical field [0001] The invention relates to a method for solving the split-screen phenomenon of an analog TV on a mobile phone. Background technique [0002] As a new function of mobile phones, TV is becoming a new hot spot in the development of mobile phones. With its free advantage, the analog TV mobile phone has become a transitional product of the predecessor of digital TV. In practical applications, in order to suppress RF interference, the data clock given by the baseband image signal processor does not match the operating frequency used by the analog TV chip, causing the field signal of the baseband image signal processor to receive TV disorder, and the start of each frame of image data The starting point cannot be synchronized with the field signal, and the screen is split, causing inconvenience to users. Contents of the invention [0003] The purpose of the present invention is to provide a solution to the split-screen phenomenon of simulated TV on a mobile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/44H04N5/445G09G3/36
Inventor 杨爱鹤
Owner SHANGHAI SIMCOM LTD