Transmission apparatus of video information, transmission system of video information and transmission method of video information

• Main Authors: MASUNO TAKASHI, KOBAYASHI HISAKAZU
• Format: Patent
• Language: English
• Published: 24.08.2004
• Edition: 7
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; BASIC ELECTRONIC CIRCUITRY; CALCULATING; CODE CONVERSION IN GENERAL; CODING; COMPUTING; COUNTING; CRYPTOGRAPHY; DECODING; DISPLAY; EDUCATION; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEALS; TRANSMISSION

The present invention provides a transmission apparatus for video information that allows wireless transmission of video information at a low rate regardless of differences in OSs. A transmission apparatus for video information according to the present invention has:an input part for inputting video information transmitted by a central processing unit; a level information generation part for generating level information of each pixel on a screen based on the video information; a memory part for storing level information of each pixel of the entire region of the screen; a comparison part for comparing level information stored in the memory part with level information outputted by the level information generation part with respect to said pixel associated with the video information and for outputting comparison information; a region extraction part for extracting a region that includes a pixel wherein the level information stored in the memory part and the level information based on the video information are different according to the comparison information; a compression part for compressing the information amount of the level information of each pixel of the extracted region of the screen; and a communication part for transmitting position information of the region of the screen and the compressed level information.