Method for enlarging video call visual angle on mobile terminal and mobile terminal thereof
A technology for mobile terminals and video calls, which is applied to color TV parts, TV system parts, TVs, etc., and can solve problems such as reducing the viewing angle in the horizontal or vertical direction, image ratio imbalance, and affecting visual effects
Inactive Publication Date: 2009-09-16
SHANGHAI WINGTECH ELECTRONICS TECH
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Problems solved by technology
Using either of the current aforementioned two methods will greatly reduce the horizontal or vertical viewing angle, which will cause the displayed image to be out of balance and greatly affect the visual effect
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[0022] In the following specific implementation manners, the method for expanding the viewing angle of a video call and the mobile terminal implementing the method are methods and devices that comply with the TD-SCDMA standard. Of course, the scope of protection of the present invention is not limited to this, and other methods can be implemented. The transmission of video calls, as long as they are easily conceivable changes or replacements, should be covered by the scope of protection of the present invention. If the method of the present invention is adopted and the mobile terminal adopts the WCDMA or CDMA2000 standard format, it is an easily conceivable change. .
[0023] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0024] Figure 4 This is a schematic diagram of the hardware connection of a TD-SCDMA mobile terminal in this specific embodiment. The mobile terminal includes a baseband module (Basic...
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The invention relates to a method for enlarging a video call visual angle on a mobile terminal, which comprises the following steps: a, starting a video call, and receiving sent video images by a radio frequency module; b, analyzing the video images received in the step a by a baseband module and judging whether the video images are full screen videos; c, determining a corresponding cutting algorithm by the baseband module according to the analysis result in the step b; d, sending the cutting algorithm determined by the step c to a digital signal processing module by the baseband module, and cutting the video images received in the step a by the digital signal processing module; e, performing twiddle operation on the images cut in the step d by the digital signal processing module; f, sending image data after the processing in the step e to an LCD display module by the digital signal processing module, if the video call continues, turning to the step a, otherwise, turning to a step g; and g, ending the call. The steps from a to f are repeated until the call is ended in the step g. With the method, the function of enlarging the video visual angle on the mobile terminal can be achieved.
Description
Technical field [0001] The present invention relates to a mobile terminal, in particular to a method and mobile terminal for ensuring video quality in a 3G standard mobile terminal. Background technique [0002] The current 3G standards include China's TD-SCDMA, WCDMA (Wideband CDMA) from Europe and Japan, and CDMA 2000 from the United States. At present, 3G standard mobile terminals can realize video calls, and the environment image of the other party can be seen during the call. At present, due to rate limitations, the image sensor used in TD-SCDMA video calls has basically 300,000 pixels, that is, the width and height are 640 and 480 pixels, respectively; the size of the LCD used for terminal display is generally 176×220 or 240 ×320 size, therefore, the background image of the other party received from the network needs to be cropped. Generally, there are two methods of cropping, both of which tend to reduce the viewing angle. Take the LCD size of 176×220 as an example, the fi...
Claims
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Inventor 杨广福
Owner SHANGHAI WINGTECH ELECTRONICS TECH