Image data reading method of image sensor
An image sensor and image data technology, applied in the field of image sensors, can solve problems such as increased difficulty, reduced reliability, and inability to solve frame rate problems, and achieve the effect of increasing the number of transmission channels, increasing the frame rate, and increasing the number
Active Publication Date: 2018-11-02
GALAXYCORE SHANGHAI
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Only by improving the performance of the circuit, it can operate normally at nearly twice the frequency. However, if the transmission frequency is increased, the internal circuits including the analog circuit will need a higher operating frequency, which will affect the performance and power consumption of the circuit. Design pressure, and the need to support higher-speed transmission at the system level increases difficulty and reduces reliability; or in the case of MIPI and other transmission methods, instead of increasing the frequency used for transmission, increase the transmission by increasing the number of channels The amount of data, but the larger the number of channels, the more output pins the chip requires, which may become a factor restricting the chip area and cost; or in the case of a certain bandwidth, transmit data through lossy or lossless compression. But it can't solve the frame rate problem
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[0029] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0030] In one embodiment, the present invention provides a method for reading image data of an image sensor, the image sensor includes multiple rows of pixel units, the method includes the following steps: performing interlaced acquisition and classification on the pixel unit rows during odd image frames After reading to obtain the first image data, during the even image frame period adjacent to the odd image frame period, the pixel unit row is interlaced to collect and classify and then read to obtain the second image data, and...
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The invention provides an image data reading method for an image sensor. The image sensor comprises multiple lines of pixel units. The method comprises the following steps that interlacing reading is performed on pixel unit lines in an odd image frame period to obtain first image data, and interlacing reading is performed on pixel unit lines in an even image frame period adjacent to the odd image frame period to obtain second image data, wherein the pixel unit lines read in the odd image frame period and the pixel unit lines read in the even image frame period are staggered; according to the first image data and the second image data, a complete image with resolution is restored. According to the image data reading method for the image sensor, the image data of the image sensor are output in a multi-frame and staggered mode, so that the number of frames transmitted in unit time is increased, and then the frame rate is increased without enhancing transmission frequency or increasing the number of transmission channels.
Description
technical field [0001] The invention relates to the technical field of image sensors, in particular to an image data reading method of an image sensor. Background technique [0002] With the development of semiconductor technology, the development speed of image sensor technology is changing day by day, which makes the number of pixels contained in image sensors increase to 5M, 8M or even larger to improve image quality, but this also brings about data transmission problems. Assuming that 5M RAW data is transmitted at 30 frames per second, the amount of data transmitted per second will reach 5M*10bit*30fps, that is, 1.5Gbit of data needs to be transmitted per second, plus some other transmission costs, the required bandwidth is greater . With the rise of 3D and high dynamic range requirements, the required frame rate may reach 60 frames, and the required bandwidth will further increase. [0003] In the existing method for solving this problem, the image sensor still output...
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Login to View More IPC IPC(8): H04N5/374H04N5/378H04N9/04
Inventor 赵立新陈孟儒
Owner GALAXYCORE SHANGHAI