# US 10,872,440 B2 · Image signal processing device, and image signal transmission system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,872,440 B2 - Document ID: US10872440B2 - Status: Granted - Kind: B2 - Application number: 16/024,929 - Filed: 2018-07-02 - Published: 2019-01-10 - Granted: 2020-12-22 - Earliest claimed: 2017-07-10 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Masaru Sekizawa; Takaaki Abe; Ryoji Okubo; Kazuma Tani; Iori Hayashi - Web page: https://patentgrep.com/patent/US10872440B2 ## CPC - G06T 9/00: Image coding (bandwidth or redundancy reduction for static pictures H04N1/41; coding or decoding of static colour picture signals H04N1/64; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00) - G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units} - G09G 3/36: using liquid crystals - G09G 5/14: Display of multiple viewports - H04L 45/24: Multipath - H04L 69/04: Protocols for data compression, e.g. ROHC - H04L 69/14: Multichannel or multilink protocols - H04N 19/115: Selection of the code volume for a coding unit prior to coding - H04N 19/164: Feedback from the receiver or from the transmission channel - H04N 19/436: using parallelised computational arrangements - H04N 19/85: using pre-processing or post-processing specially adapted for video compression - G09G 2350/00: Solving problems of bandwidth in display systems - G09G 2352/00: Parallel handling of streams of display data - G09G 2370/20: Details of the management of multiple sources of image data - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An image signal processing device receives image signals from source devices and outputs image signals via a plurality of communication paths. The image signal processing device includes a plurality of compression circuits, a transmission circuit and a path/compression-rate setting circuit. The plurality of compression circuits compress image signals to be transmitted via the plurality of communication paths. The transmission circuit outputs the image signals compressed. The path/compression-rate setting circuit, based on each data amount of the image signals received, determines a communication path for transmitting a part or the whole of each of the image signal, and sets a common compression rate for all of the plurality of compression circuits. The path/compression-rate setting circuit divides an image signal having a relatively large data amount, and assigns a part of the divided image signal to a communication path for transmitting an image signal having a relatively small data amount. ## Claims ### Claim 1 An image signal transmission system comprising: an image signal processing device configured to receive image signals from a plurality of source devices and output image signals via a plurality of communication paths, the image signal processing device comprising: a plurality of compression circuits configured to compress image signals to be transmitted via the plurality of communication paths; a transmission circuit configured to output the image signals compressed by the plurality of compression circuits via the plurality of communication paths corresponding to the plurality of compression circuits; and a path/compression-rate setting circuit configured to, based on each data amount of the image signals received from the plurality of source devices, determine a communication path for transmitting a part or a whole of each of the image signals, of the plurality of communication paths, and set a common compression rate for all of the plurality of compression circuits, wherein the path/compression-rate setting circuit divides an image signal having a relatively large data amount out of the image signals, and assigns a part of the divided image signal to a communication path for transmitting an image signal having a relatively small data amount out of the image signals, of the plurality of communication paths; and a receiving device configured to receive the image signals from the image signal processing device via a network, generate a combined image based on the received image signals, and transmit an image signal indicating the combined image to a display device, wherein the receiving device includes: a receiving circuit configured to receive the image signals from the transmission circuit of the image signal processing device via the plurality of communication paths; decompression circuits configured to decompress the received image signals; and an image combining circuit configured to combine images indicated by the decompressed image signals, and wherein, when the decompressed image signals include parts of the image signal divided by the path/compression-rate setting circuit, the image combining circuit combines the parts back to the image signal, and combines the images using the combined image signal. ### Claim 2 (depends on 1) The image signal transmission system according to claim 1, wherein the path/compression-rate setting circuit assigns a part of an image signal having a largest data amount, of the image signals received from the plurality of source devices, to one communication path of the plurality of communication paths, and further divides a remaining part other than the part of the image signal having the largest data amount into one or more portions, and assigns the one or more portions to one or more other communication paths of the plurality of communication paths. ### Claim 3 (depends on 2) The image signal transmission system according to claim 2, wherein the path/compression-rate setting circuit divides the image signal having the largest data amount so that a data amount transmitted via the one communication path is substantially equal to a data amount transmitted via each of the one or more other communication paths. ### Claim 4 (depends on 2) The image signal transmission system according to claim 2, wherein when the image signals include an image signal to be divided to be transmitted, the path/compression-rate setting circuit sets the common compression rate to be lower than a compression rate set when the image signals does not include any image signal to be divided to be transmitted. ### Claim 5 (depends on 1) The image signal transmission system according to claim 1, wherein, to the receiving circuit, the transmission circuit transmits: the image signals compressed by the plurality of compression circuits; information indicating an decompression condition for decompressing the compressed image signals; assignment information indicating an assignment of the image signals to the plurality of communication paths; and information indicating a combining condition for combining the images indicated by the decompressed image signals, and wherein, when the decompressed image signals include the parts of the image signal divided, the image combining circuit combines the parts back to the image signal based on the assignment information, and combines the images using the combined image signal based on the combining condition. ### Claim 6 (depends on 1) The image signal transmission system according to claim 1, further comprising: a control device configured to supply a control signal to the image signal processing device, the control signal specifying positions and overlapping of the images indicated by the image signals in the combined image. ### Claim 7 (depends on 1) The image signal transmission system according to claim 1, wherein the receiving device includes a storage device configured to store the communication path set by the path/compression-rate setting circuit and the common compression rate. ### Claim 8 (depends on 1) The image signal transmission system according to claim 1, wherein the image signals include at least one of moving image data and still image data.