# US 2013/0159880 A1 · Dynamic screen sharing for optimal performance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0159880 A1 - Document ID: US20130159880A1 - Status: Published application - Kind: A1 - Application number: 13/326,007 - Filed: 2011-12-14 - Published: 2013-06-20 - Earliest claimed: 2011-12-14 - Assignees: International Business Machines Corporation - Inventors: Kulvir S. Bhogal; Gregory J. Boss; Rick A. Hamilton, II; Anne R. Sand - Web page: https://patentgrep.com/patent/US20130159880A1 ## CPC - H04L 65/403: Arrangements for multi-party communication, e.g. for conferences (data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15) - G06F 3/1454: {involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay} - G09G 5/04: using circuits for interfacing with colour displays - G09G 2340/0407: Resolution change, inclusive of the use of different resolutions for different screen areas - G09G 2340/0428: Gradation resolution change - G09G 2350/00: Solving problems of bandwidth in display systems - G09G 2370/022: Centralised management of display operation, e.g. in a server instead of locally - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - 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) ## Abstract Illustrative embodiments disclose sharing an area of a computer system screen. A first computer system configures a sharing session for sharing a region of the screen with a second computer system. The first computer system assesses information on performance of the sharing session, determining from the information a minimum size of the region based on the assessment, and then selects the region to share based on the assessment and a designation by a user. ## Claims ### Claim 1 A computer-implemented method to share an area of a screen, comprising: configuring, by a processor unit in a first computer system, a sharing session for sharing a region of the screen with a second computer system; assessing, by the processor unit in the first computer system, information on performance of the sharing session; determining, by the processor unit in the first computer system, from the information on performance a minimum size of the region based on the assessment; and selecting, by the processor unit in the first computer system, the region to share based on the assessment and a designation by a user. ### Claim 2 (depends on 1) The method of claim 1, wherein the information on performance of the sharing session includes latencies of the sharing session and characteristics of the second computer system. ### Claim 3 (depends on 1) The method of claim 1, further comprising: monitoring, by the processor unit in the first computer system, a characteristic of content in the sharing session, a constraint of the second computer system, and a feedback of performance from the second computer system; and modifying, by the processor unit in the first computer system, the region, a characteristic of the content being shared, or a characteristic of a data stream in the sharing session as required to maintain performance. ### Claim 4 (depends on 3) The method of claim 3, further comprising: monitoring, by the processor unit in the first computer system, the second computer system, wherein the monitoring comprises periodic polling of the second computer system for information on performance or receiving a request to modify the sharing session. ### Claim 5 (depends on 1) The method of claim 1, further comprising: determining, by the processor unit in the first computer system, characteristics of a data stream to use in the sharing session based on the information on performance of the sharing session and the region. ### Claim 6 (depends on 1) The method of claim 1, wherein the assessing information on performance comprises assessing a bandwidth requirement based on a resolution characteristic, a refresh rate characteristic, and a color depth characteristic of the region. ### Claim 7 (depends on 1) The method of claim 1, further comprising: sharing, by the processor unit in the first computer system, the region with a plurality of other computer systems; and determining, by the processor unit in the first computer system, a size of the region or a resolution characteristic to use based on a policy; wherein the policy comprises a mean policy, a mode policy, or a median policy. ### Claim 8 (depends on 1) The method of claim 1, further comprising: selecting, by the processor unit in the first computer system, one of absolute mapping and relative mapping for the region. ### Claim 9 A computer program product for sharing an area of a computer system screen, comprising: a computer readable storage medium; program code, stored on the computer readable storage medium, for selecting an application to generate a region on the screen of a first computer system to share with a second computer system in a sharing session, wherein the application configures the first computer system to share the region with the second computer system; program code, stored on the computer readable storage medium, for assessing information on performance of the sharing session; program code, stored on the computer readable storage medium, for determining from the information on performance a minimum size of the region based on the assessment; and program code, stored on the computer readable storage medium, for selecting the region to share based on the assessment and a designation by a user. ### Claim 10 (depends on 9) The computer program product of claim 9, wherein the information on performance of the sharing session includes latencies of the sharing session and characteristics of the second computer system. ### Claim 11 (depends on 9) The computer program product of claim 9, further comprising: program code, stored on the computer readable storage medium, for monitoring a characteristic of content in the sharing session, a constraint of the second computer system, and a feedback of performance from the second computer system; and program code, stored on the computer readable storage medium, for modifying the region, a characteristic of the content being shared, or a characteristic of a data stream in the sharing session as required to maintain performance. ### Claim 12 (depends on 11) The computer program product of claim 11, further comprising program code, stored on the computer readable storage medium, for monitoring the second computer system, wherein the monitoring comprises periodic polling of the second computer system for information on performance or receiving a request to modify the sharing session. ### Claim 13 (depends on 9) The computer program product of claim 9, further comprising: program code, stored on the computer readable storage medium, for determining characteristics of a data stream to use in the sharing session based on the information on performance of the sharing session and the region. ### Claim 14 (depends on 9) The computer program product of claim 9, wherein the assessing information on performance comprises assessing a bandwidth requirement based on a resolution characteristic, a refresh rate characteristic, and a color depth characteristic of the region. ### Claim 15 A data processing system for sharing an area of a computer system screen in a sharing session, the system comprising: a bus system; a storage device connected to the bus system, wherein the storage device includes program code; a processor unit configured to execute the program code to select an application to generate a region on the screen of a first computer system to share with a second computer system in a sharing session, wherein the application configures the first computer system to share the region with the second computer system; to assess information on performance of the sharing session; to determine from the information on performance a minimum size of the region based on the assessment; and to select the region to share based on the assessment and a designation by a user. ### Claim 16 (depends on 15) The data processing system of claim 15, wherein the information on performance of the sharing session includes latencies of the sharing session and characteristics of the second computer system. ### Claim 17 (depends on 15) The data processing system of claim 15, further comprising the processor unit configured to monitor a characteristic of content in the sharing session, a constraint of the second computer system, and a feedback of performance from the second computer system, and to modify the region, a characteristic of the content being shared, or a characteristic of a data stream in the sharing session as required to maintain performance. ### Claim 18 (depends on 15) The data processing system of claim 15, further comprising the processor unit configured to monitor the second computer system, wherein the monitoring comprises periodic polling of the second computer system for information on performance or receiving a request to modify the sharing session. ### Claim 19 (depends on 15) The data processing system of claim 15, further comprising the processor unit configured to determine characteristics of a data stream to use in the sharing session based on the information on performance of the sharing session and the region. ### Claim 20 (depends on 15) The data processing system of claim 15, wherein the assessed information on performance comprises an assessed bandwidth requirement based on a resolution characteristic, a refresh rate characteristic, and a color depth characteristic of the region.