# US 2018/0027243 A1 · System and method for sending video data over a wireless channel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0027243 A1 - Document ID: US20180027243A1 - Status: Published application - Kind: A1 - Application number: 15/288,977 - Filed: 2016-10-07 - Published: 2018-01-25 - Earliest claimed: 2016-07-21 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Ehsan Haghani; Amin Mobasher; Jalil Kamali - Web page: https://patentgrep.com/patent/US20180027243A1 ## CPC - H04N 19/172: the region being a picture, frame or field - H04N 19/174: the region being a slice, e.g. a line of blocks or a group of blocks - H04N 19/132: Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking - H04N 19/162: User input - H04N 19/164: Feedback from the receiver or from the transmission channel - H04N 19/167: Position within a video image, e.g. region of interest [ROI] - H04N 19/37: with arrangements for assigning different transmission priorities to video input data or to video coded data - H04N 19/88: involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A system and method for transmitting video. Each frame of video is divided into a number of regions, that are transmitted in order beginning with a region of most importance. The region of most importance may be different from one frame to the next. When the video is transmitted over a channel with limited channel capacity, so that some frames are not transmitted completely, the region of most importance in a current frame may be selected to be the first region not transmitted in the previous frame. The system and method may be useful for the transmission of video data over a wireless link having variable or limited channel capacity. ## Claims ### Claim 1 A method for transmitting video for a display panel comprising N regions, numbered 1 through N, wherein N is a positive integer, the method comprising: identifying, for a first frame of video, a first region of most importance, from among the N regions; transmitting data from the first frame of video, one region at a time, beginning with the first region of most importance, until a first frame transmission interval corresponding to the first frame of video has elapsed; identifying, for a second frame of video, a second region of most importance, from among the N regions, the second region of most importance being different from the first region of most importance; and transmitting data from the second frame of video, one region at a time, beginning with the second region of most importance, until a second frame transmission interval corresponding to the second frame of video has elapsed. ### Claim 2 (depends on 1) The method of claim 1, wherein the identifying of the second region of most importance comprises identifying a region from among the N regions for which a measure of the difference between data for the first frame and data for the second frame is greatest, when during the first frame transmission interval all N regions were transmitted. ### Claim 3 (depends on 1) The method of claim 1, wherein the identifying of the second region of most importance comprises selecting the region having the next region number following, in cyclic order, the region number of the last region transmitted during the first frame transmission interval, when during the first frame transmission interval not all N regions were transmitted. ### Claim 4 (depends on 3) The method of claim 3, wherein the identifying of the second region of most importance comprises identifying a region from among the N regions for which a measure of the difference between data for the first frame and data for the second frame is greatest, when during the first frame transmission interval all N regions were transmitted. ### Claim 5 (depends on 4) The method of claim 4, wherein the first frame of video comprises sub-pixel data, the second frame of video comprises sub-pixel data, and the measure of the difference is the sum, over the sub-pixel data in the region, of: the square of: the difference between: the value of the sub-pixel data of the first frame of video, and the value of the sub-pixel data of the second frame of video. ### Claim 6 (depends on 3) The method of claim 3, wherein the identifying of the second region of most importance comprises receiving from a user an indication of which region is the region of most importance. ### Claim 7 (depends on 1) The method of claim 1, wherein: the transmitting of data from the first frame of video further comprises transmitting an identifier for the first region of most importance. ### Claim 8 (depends on 1) The method of claim 1, wherein: the transmitting of data from the first frame of video, one region at a time, comprises encoding the data from the first frame of video, one region at a time; and the transmitting of data from the second frame of video, one region at a time, comprises encoding the data from the second frame of video, one region at a time. ### Claim 9 (depends on 8) The method of claim 8, further comprising: receiving data from the first frame of video, one region at a time; decoding the data from the first frame of video, one region at a time; receiving data from the second frame of video, one region at a time; and decoding the data from the second frame of video, one region at a time. ### Claim 10 (depends on 8) The method of claim 8, further comprising: supplementing the decoded data from the second frame of video with corresponding data from the first frame of video, when during the second frame transmission interval not all N regions were transmitted. ### Claim 11 (depends on 1) The method of claim 1, wherein the transmitting of data from the first frame of video, one region at a time, beginning with the first region of most importance, comprises transmitting data by region number in cyclic order. ### Claim 12 (depends on 1) The method of claim 1, wherein the transmitting of data from the first frame of video, one region at a time, beginning with the first region of most importance, comprises transmitting data by region number in order of decreasing importance. ### Claim 13 A transmitter for transmitting video for a display panel comprising N regions, numbered 1 through N, wherein N is a positive integer, the transmitter being configured to: identify, for a first frame of video, a first region of most importance, from among the N regions; transmit data from the first frame of video, one region at a time, beginning with the first region of most importance, by region number in cyclic order, until a first frame transmission interval corresponding to the first frame of video has elapsed; identify, for a second frame of video, a second region of most importance, from among the N regions, the second region of most importance being different from the first region of most importance; and transmit data from the second frame of video, one region at a time, beginning with the second region of most importance, by region number in cyclic order, until a second frame transmission interval corresponding to the second frame of video has elapsed. ### Claim 14 (depends on 13) The transmitter of claim 13, wherein the identifying of the second region of most importance comprises selecting the region having the next region number following, in cyclic order, the region number of the last region transmitted during the first frame transmission interval, when during the first frame transmission interval not all N regions were transmitted. ### Claim 15 (depends on 14) The transmitter of claim 14, wherein the identifying of the second region of most importance comprises identifying a region from among the N regions for which a measure of the difference between data for the first frame and data for the second frame is greatest, when during the first frame transmission interval all N regions were transmitted. ### Claim 16 (depends on 15) The transmitter of claim 15, wherein the first frame of video comprises sub-pixel data, the second frame of video comprises sub-pixel data, and the measure of the difference is the sum, over the sub-pixel data in the region, of: the square of: the difference between: the value of the sub-pixel data of the first frame of video, and the value of the sub-pixel data of the second frame of video. ### Claim 17 (depends on 14) The transmitter of claim 14, wherein the identifying of the second region of most importance comprises receiving from a user an indication of which region is the region of most importance. ### Claim 18 (depends on 13) The transmitter of claim 13, wherein: the transmitting of data from the first frame of video further comprises transmitting an identifier for the first region of most importance. ### Claim 19 A method for transmitting video over a wireless link, the method comprising: storing a first frame of video data in a buffer; dividing the first frame into N regions, N being a positive integer; sending, over the wireless link, video data from a first subset of the N regions, and not sending the video data from a second subset of the N regions, the first subset and the second subset being disjoint and together including all of the N regions, storing a second frame of video data in a buffer; dividing the second frame into the N regions; and sending, over the wireless link, video data from a third subset of the N regions and not sending the video data from a fourth subset of the N regions, the regions of the second subset being in the third subset. ### Claim 20 (depends on 19) The method of claim 19, wherein the regions in the fourth subset are in the first subset. ### Claim 21 (depends on 19) The method of claim 19 further comprising: before the sending of the video data from a first subset of the N regions, encoding the video data from the first subset one region at a time; and before the sending of the video data from a third subset of the N regions, encoding the video data from the third subset one region at a time. ### Claim 22 (depends on 19) The method of claim 19 further comprising: receiving the video data from a first subset of the N regions; displaying a first image including the video data from a first subset of the N regions; receiving the video data from a third subset of the N regions; and displaying a second image including: the video data from a third subset of the N regions; and video data from regions, of the first subset of the N regions, corresponding to the fourth subset of the N regions.