# US 5,345,250 A · Data processing system and apparatus and display system with image information memory control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,345,250 A - Document ID: US5345250A - Status: Granted - Kind: A - Application number: 08/026,175 - Filed: 1993-03-01 - Granted: 1994-09-06 - Earliest claimed: 1988-09-29 - Assignees: Canon Kabushiki Kaisha - Inventors: Hiroshi Inoue; Atsushi Mizutome; Aiko Enomoto - Web page: https://patentgrep.com/patent/US5345250A ## CPC - G09G 3/3629: {using liquid crystals having memory effects, e.g. ferroelectric liquid crystals} - G09G 2310/0227: related to multiple interlacing, i.e. involving more fields than just one odd field and one even field - G09G 2310/04: Partial updating of the display screen - G09G 2310/06: Details of flat display driving waveforms - G09G 2310/061: for resetting or blanking - G09G 2310/065: Waveforms comprising zero voltage phase or pause - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A data processing apparatus includes a controller for controlling an image information storage memory. The controller controls the storage memory so that received image information is stored in the image information storage memory as scanning line address information and display information, with the scanning line address information designating scanning lines of a display device which accesses different areas in the image information storage memory. The controller also controls the storage memory so that the scanning line address information and the display information stored in different areas are serially transferred to a drive control in the display device, and so that the scanning address information which is transferred to the drive control accesses the designated scanning lines only. In addition, the image information storage memory is controlled so that a partial rewriting, which scans only scanning lines of the display device corresponding to a rewriting area formed by a partial rewriting of image information stored in the image information storage memory, is executed in a non-interlace scanning and where the rewriting area does not exist, the image information rewriting is executed in an interlace scanning. ## Claims ### Claim 1 A data processing apparatus, comprising: first means for controlling an image information storage memory so that a received image information is stored in the image information storage memory as scanning line address information and display information, the scanning line address information designating scanning lines of a display device which accesses different areas in the image information storage memory; second means for controlling the image information storage memory so that the scanning line address information and the display information stored in different areas are serially transferred to drive control means in the display device; third means for controlling the image information storage memory so that the scanning line address information which is transferred to the drive control means in the display device accesses the designated scanning lines only; and fourth means for controlling the storage memory so that a partial rewriting, which scans only scanning lines of the display device corresponding to a rewriting area formed by a partial rewriting of image information stored in the image information storage memory, is executed in a non-interlace scanning and when the rewriting area does not exist, image information rewriting is executed in an interlace scanning. ### Claim 2 (depends on 1) An apparatus according to claim 1, further comprising means for controlling the drive control so as to distribute the scanning line address data and the display data. ### Claim 3 (depends on 1) An apparatus according to claim 1, further comprising means for controlling the image information store memory so that the drive control monitors a horizontal synchronization signal for every one horizontal scanning interval and the display information is transferred to the drive control in a synchronization with the horizontal synchronization signal. ### Claim 4 (depends on 1) An apparatus according to claim 1, wherein said scanning line address information is used for designating scanning lines subjected to partial rewriting scanning line by line. ### Claim 5 (depends on 1) An apparatus according to claim 1, wherein said address information is used for designating lines subjected to one frame scanning line by line. ### Claim 6 A display system, comprising: a matrix type display device provided with scanning lines and information lines; drive means for generating a voltage signal to sequentially apply scanning signals onto the scanning lines and apply information signals onto the information lines; drive control means for outputting said voltage signal to the scanning lines and information lines in response to image information; and first means for controlling an image information storage memory so that a received image information is stored in the image information storage memory as scanning line address information and display information, the scanning line address information designating scanning lines of a display device which accesses different areas in the image information storage memory; second means for controlling the image information storage memory so that the scanning line address information and the display information stored in different areas are serially transferred to drive control means in the display device; third means for controlling the image information storage memory so that the scanning line address information which is transferred to said drive control means in said display device accesses the designated scanning lines only; and fourth means for controlling the image information storage memory so that a partial rewriting, which scans only scanning lines of the display device corresponding to a rewriting area formed partial rewriting of image information stored in the image information storage memory, is executed in a non-interlace scanning and when the rewriting area does not exist, image information rewriting is executed in an interlace scanning. ### Claim 7 (depends on 6) A system according to claim 6, further comprising means for controlling said drive control means so as to distribute the scanning line address data and the display data. ### Claim 8 (depends on 6) A system according to claim 6, further comprising means for controlling the image information storage memory so that said drive control means monitors a horizontal synchronization signal for every one horizontal scanning interval and the display information is transferred to said drive control means in synchronization with the horizontal synchronization signal. ### Claim 9 (depends on 6) A system according to claim 6, wherein said scanning line address information is used for designating scanning lines subjected to partial rewriting scanning line by line. ### Claim 10 (depends on 6) A system according to claim 6, wherein said address information is used for designating scanning lines subjected to one frame scanning line by line.