# US 10,873,396 B2 · Methods and devices for transceiving light via a display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,396 B2 - Document ID: US10873396B2 - Status: Granted - Kind: B2 - Application number: 16/347,672 - Filed: 2017-12-05 - Published: 2019-09-12 - Granted: 2020-12-22 - Earliest claimed: 2016-12-05 - Assignees: Rensselaer Polytechnic Institute - Applicants: Rensselaer Polytechnic Institute - Inventors: Robert F. Karlicek; Bassem Fahs - Web page: https://patentgrep.com/patent/US10873396B2 ## CPC - H04B 10/116: Visible light communication - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - H04B 10/40: Transceivers - H04B 10/502: {LED transmitters} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04B: TRANSMISSION - 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) ## Abstract Methods and devices including a light display transceiver device are disclosed. Disclosed methods and devices include a light source array including at least one pixel unit, the at least one pixel unit including one of a single pixel, a plurality of groups of cooperating single pixels, a combination of singles pixels and groups of cooperating single pixels, and a single group of cooperating single pixels. Control wires are joined with each of the at least one pixel units. A controller is joined with the control wires for controlling each of the at least one pixel unit. The light source array is configured to operate in at least one of three modes, a full-space-division-duplex (FSDD) mode, a half-space-division-duplex (HSDD) mode, and a time-division-duplex (TDD) mode. The controller causes the light source array to operate in one of the three modes. ## Claims ### Claim 1 A light display transceiver device comprising: a light source array including at least one pixel unit, said at least one pixel unit including one of a single pixel, a plurality of groups of cooperating single pixels, a combination of singles pixels and groups of cooperating single pixels, and a single group of cooperating single pixels; control wires joined with each of said at least one pixel units; and a controller joined with said control wires for controlling each of said at least one pixel unit; wherein said light source array is configured to operate in at least one of three modes, a full-space-division-duplex (FSDD) mode, a half-space-division-duplex (HSDD) mode, and a time-division-duplex (TDD) mode and said controller causes said light source array to operate in one of said three modes; and wherein said control wires are a conduit for relaying a first control signal from said controller to each of said pixel units in said light source array including instructions that cause each of said pixel units to operate in a display mode, a second control signal from said controller to each of said pixel units in said light source array including instructions that cause each of said pixel units to operate in a transmitter mode, a third control signal from said controller to each of said pixel units in said light source array including instructions that cause each of said pixel units to operate in a receiver mode, or a combination thereof. ### Claim 2 (depends on 1) The device according to claim 1, wherein each of said single pixels is a light emitting diode (LED) or an organic light emitting diode (OLED). ### Claim 3 (depends on 2) The device according to claim 2, wherein each of said single pixels includes at least two transistors and signals received by said pixel are output as a voltage signal. ### Claim 4 (depends on 2) The device according to claim 2, wherein each of said single pixels includes at least two transistors and signals received by said pixel are output as a current signal. ### Claim 5 (depends on 2) The device according to claim 2, wherein each of said single pixels includes a plurality of transistors and capacitors. ### Claim 6 (depends on 5) The device according to claim 5, wherein each of said single pixels and said light source array are configured to operate in only TDD mode. ### Claim 7 (depends on 1) The device according to claim 1, further comprising intermediate buffer circuitry positioned between said controller and said light source array for controlling modulation signal application to said light source array. ### Claim 8 (depends on 1) The device according to claim 1, wherein a number of said control wires joined with said light source array is one of three times the number of rows (N) times the number of columns (M) in said light source array, three-halves NM, or N+3M. ### Claim 9 A light display transceiver device comprising: a light source array including rows or columns of cooperating single pixels; control wires joined with each of said rows or columns of cooperating single pixels; and a controller joined with said control wires for controlling each of said rows or columns of cooperating single pixels; wherein said light source array includes at least one of three modes of operation, a full-space-division-duplex (FSDD) mode, a half-space-division-duplex (HSDD) mode, and a time-division-duplex (TDD) mode and said controller causes said light source array to operate in one of said modes; and wherein said control wires are a conduit for relaying a first control signal from said controller to said single pixels in said light source array including instructions that cause said single pixels to operate in a display mode, a second control signal from said controller to said single pixels in said light source array including instructions that cause said single pixels to operate in a transmitter mode, a third control signal from said controller to said single pixels in said light source array including instructions that cause said single pixels to operate in a receiver mode, or a combination thereof. ### Claim 10 (depends on 9) The device according to claim 9, wherein each of said single pixels is a light emitting diode (LED) or an organic light emitting diode (OLED). ### Claim 11 (depends on 9) The device according to claim 9, wherein said controller is configured to control each of said row or column of cooperating single pixels in a predetermined order. ### Claim 12 (depends on 9) The device according to claim 9, wherein each of said single pixels includes a plurality of transistors and capacitors. ### Claim 13 (depends on 12) The device according to claim 12, wherein each of said single pixels and said light source array are configured to operate in only TDD mode. ### Claim 14 (depends on 9) The device according to claim 9, wherein a number of said control wires joined with said light source array is about the number of rows (N) plus three times the number of columns (M) in said light source array. ### Claim 15 A method of controlling a light source array comprising: providing a light source array including rows or columns of cooperating single pixels; providing a controller that is in electronic communication with each of said rows or columns of cooperating single pixels via control wires joined with said controller and each of said rows or columns of cooperating single pixels; and separately transmitting control signals from said controller to each of said rows or columns of cooperating single pixels in a predetermined order; wherein a number of said control wires joined with said light source array is one of three times the number of rows (N) times the number of columns (M) in said light source array, three-halves NM, or N+3M. ### Claim 16 (depends on 15) The method according to claim 15, wherein each of said single pixels includes a plurality of transistors and capacitors. ### Claim 17 (depends on 16) The method according to claim 16, wherein said control signals only include a display mode signal and each of said single pixels and said light source array are configured to operate in only TDD mode. ### Claim 18 (depends on 16) The method according to claim 16, temporarily storing said control signals in said capacitors. ### Claim 19 (depends on 15) The method according to claim 15, wherein said control wires are a conduit for relaying a first control signal from said controller to said single pixels in said light source array including instructions that cause said single pixels to operate in a display mode, a second control signal from said controller to said single pixels in said light source array including instructions that cause said single pixels to operate in a transmitter mode, a third control signal from said controller to said single pixels in said light source array including instructions that cause said single pixels to operate in a receiver mode, or a combination thereof.