# US 12,003,709 B1 · Visual data transmission by an air-gapped system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,709 B1 - Document ID: US12003709B1 - Status: Granted - Kind: B1 - Application number: 17/988,591 - Filed: 2022-11-16 - Published: 2024-05-16 - Granted: 2024-06-04 - Earliest claimed: 2022-11-16 - Assignees: International Business Machines Corporation - Applicants: International Business Machines Corporation - Inventors: Reinhold Geiselhart; Rene Blath; Frank Kuster - Web page: https://patentgrep.com/patent/US12003709B1 ## CPC - H04N 19/115: Selection of the code volume for a coding unit prior to coding - H04N 19/112: according to a given display mode, e.g. for interlaced or progressive display mode - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Visual data transmission by an air-gapped system, including: transmitting, by an air-gapped system comprising at least one first computing device, a visual encoding of data via a display; detecting, during capture of the visual encoding of the data by a second computing device via a camera, an error; generating, by the second computing device in response to the error, and alert; and retransmitting, in response to a user input to the air-gapped system, at least a portion of the visual encoding of the data via the display. ## Claims ### Claim 1 A method of visual data transmission by an air-gapped system, the method comprising: generating, in response to an error detected during capture of a visual encoding of data by a second computing device via a camera, an alert by the second computing device, wherein the visual encoding of the data was transmitted via a display by an air-gapped system comprising at least one first computing device; and retransmitting, in response to a user input to the air-gapped system, at least a portion of the visual encoding of the data via the display. ### Claim 2 (depends on 1) The method of claim 1, further comprising: generating, by the second computing device, an instance of the data after completing capture of the visual encoding of the data; and providing the instance of the data to a remote computing device. ### Claim 3 (depends on 1) The method of claim 1, wherein the second computing device comprises a mobile device. ### Claim 4 (depends on 1) The method of claim 1, wherein the user input comprises a keyboard input. ### Claim 5 (depends on 1) The method of claim 1, wherein the at least a portion of the data corresponds to a first offset relative to when the user input was received. ### Claim 6 (depends on 5) The method of claim 5, further comprising retransmitting, in response to another user input to the air-gapped system, another at least a portion of the visual encoding of the data via the display, wherein the other at least a portion of the data corresponds to a second offset relative to when the user input was received, wherein the second offset is greater than the first offset. ### Claim 7 (depends on 1) The method of claim 1, further comprising providing, in response to the user input and a determination that a beginning of the visual encoding of the data would be retransmitted, a recommendation instead of retransmitting the at least a portion of the visual encoding of the data. ### Claim 8 (depends on 1) The method of claim 1, wherein the visual encoding of the data comprises a text encoding. ### Claim 9 (depends on 1) The method of claim 1, wherein the visual encoding of the data comprises quick response (QR) code encoding. ### Claim 10 (depends on 1) The method of claim 1, wherein the alert comprises one or more of: a sound, a visual alert, or a haptic alert. ### Claim 11 A system for visual data transmission by an air-gapped system, comprising: an air-gapped system comprising: an input device; a display; and at least one first computing device configured perform first steps comprising: transmitting a visual encoding of data via the display; and retransmitting, in response to a user input to the input device, at least a portion of the visual encoding of data; and a second computing device comprising a camera, wherein the second computing device is configured to perform second steps comprising: detect, during capture of the visual encoding of the data via the camera, an error; and generate, in response to the error, an alert. ### Claim 12 (depends on 11) The system of claim 11, wherein the second steps further comprise: generating an instance of the data after completing capture of the visual encoding of the data; and providing the instance of the data to a remote computing device. ### Claim 13 (depends on 11) The system of claim 11, wherein the second computing device comprises a mobile device. ### Claim 14 (depends on 11) The system of claim 11, wherein the input device comprises a keyboard. ### Claim 15 (depends on 11) The system of claim 11, wherein the at least a portion of the data corresponds to a first offset relative to when the user input was received. ### Claim 16 (depends on 15) The system of claim 15, wherein the first steps further comprise retransmit, in response to another user input to the input device, another at least a portion of the visual encoding of the data via the display, wherein the other at least a portion of the data corresponds to a second offset relative to when the user input was received, wherein the second offset is greater than the first offset. ### Claim 17 (depends on 11) The system of claim 11, wherein the first steps further comprise providing, in response to the user input and a determination that a beginning of the visual encoding of the data would be retransmitted, a recommendation instead of retransmitting the at least a portion of the visual encoding of the data. ### Claim 18 (depends on 11) The system of claim 11, wherein the visual encoding of the data comprises a text encoding. ### Claim 19 (depends on 11) The system of claim 11, wherein the visual encoding of the data comprises quick response (QR) code encoding. ### Claim 20 (depends on 11) The system of claim 11, wherein the alert comprises one or more of: a sound, a visual alert, or a haptic alert.