Solution method for analog television windowing phenomena on mobile phone
A technology for simulating TV and solutions, applied to color TV parts, TV system parts, TVs, etc. It can solve problems such as screen splitting, inconvenient viewing for users, and inability to synchronize line and field signals at the starting point. show full effect
Inactive Publication Date: 2010-08-25
SHANGHAI SIMCOM LTD
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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
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[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] As shown in Fig. 2, 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, enable frame reception interrupt and field trigger interrupt. When the ISP (image signal processor) interrupt is triggered, go to step S 2000 Image signal processing interrupted. Go to step S 2001 Read out the interrupt status of the image module, step S 2002 Determine whether the frame interrupt is turned on (that is, whether a frame is fully received), and if so, skip step S 2003 , otherwise go to step S 2003 Turn on field-triggered interrupts. Go to step S 2004 , S 2005 , when the ISP is in a busy state and receives a full field of signals, step S 2006 Preview frame plus one, step S 2007 Wait for...
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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 accesscontroller (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 phenomenon of simulating TV split screen 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, which causes the field signal received by the baseband image signal processor to be chaotic, and the start of each frame of image data. The starting point cannot be synchronized with the line and field signals, and the screen splits appear, which causes inconvenience to the user. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a solution to the phenomenon of simulatin...
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IPC IPC(8): H04N5/44H04N5/445G09G3/36
Inventor 杨爱鹤
Owner SHANGHAI SIMCOM LTD