# US 12,602,109 B2 · Method for automotive device to project image onto windshield for viewing by primary viewer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,602,109 B2 - Document ID: US12602109B2 - Status: Granted - Kind: B2 - Application number: 18/964,331 - Filed: 2024-11-29 - Published: 2025-07-03 - Granted: 2026-04-14 - Earliest claimed: 2023-12-27 - Assignees: Innolux Corporation; Carux Technology Pte. Ltd. - Applicants: InnoLux Corporation; Carux Technology Pte. Ltd. - Inventors: Hsuan-Ting Kuo; Chia-Hsien Hsieh; Hong-Sheng Hsieh; Chi-Lun Feng - Web page: https://patentgrep.com/patent/US12602109B2 ## CPC - G06F 3/013: {Eye tracking input arrangements (G06F3/015 takes precedence)} - B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor - B60K 35/235: with means for detecting the driver's gaze direction or eye points - B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver - B60K 35/60: Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) - G06T 7/70: Determining position or orientation of objects or cameras (camera calibration G06T7/80) - G09G 3/001: {using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background (slide projectors per se G03B23/00 = 42 HP)} - B60K 2360/741: Instruments adapted for user detection - G06T 2207/30201: Face - G06T 2207/30268: Vehicle interior - G09G 2320/0673: for control of gamma adjustment, e.g. selecting another gamma curve - G09G 2354/00: Aspects of interface with display user - G09G 2380/10: Automotive applications - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - 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 A method for an automotive device to project an image onto a windshield for viewing by a primary viewer is provided. The method includes the following steps. The primary viewer state is determined. The corresponding content correction signal and the corresponding gamma correction signal are output according to the primary viewer state. A corresponding display signal is generated according to the corresponding content correction signal and the corresponding gamma correction signal. The image is displayed according to the display signal. The image is projected onto the windshield. ## Claims ### Claim 1 A method for an automotive device to project an image onto a windshield for viewing by a primary viewer, comprising: determining a primary viewer state; outputting a corresponding content correction signal and a corresponding gamma correction signal according to the primary viewer state; generating a corresponding display signal according to the corresponding content correction signal and the corresponding gamma correction signal; displaying the image according to the display signal; and projecting the image onto the windshield, wherein the primary viewer state is determined to be a driver viewing state or a front-seat passenger viewing state, and the front-seat passenger viewing state comprises a front-seat passenger average eye position, wherein the step of determining the primary viewer state comprises: taking a facial image of a front-seat passenger; analyzing the facial image of the front-seat passenger to generate a facial image signal of the front-seat passenger; and calculating the front-seat passenger average eye position within a second period according to the facial image signal of the front-seat passenger, wherein the second period is between 0.5 seconds and 3 seconds. ### Claim 2 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the driver viewing state comprises a driver average eye position. ### Claim 3 (depends on 2) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 2, wherein the step of determining the primary viewer state comprises: taking a facial image of a driver; analyzing the facial image of the driver to generate a facial image signal of the driver; and calculating the driver average eye position within a first period according to the facial image signal of the driver. ### Claim 4 (depends on 3) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 3, wherein the first period is between 0.5 seconds and 3 seconds. ### Claim 5 (depends on 4) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 4, wherein the first period is 2 seconds. ### Claim 6 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the second period is 2 seconds. ### Claim 7 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the step of determining the primary viewer state comprises: taking an in-car image; analyzing the in-car image to generate an in-car image signal; and determining the primary viewer state according to the in-car image signal. ### Claim 8 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the step of determining the primary viewer state comprises: getting front-seat passenger sensing information, analyzing the front-seat passenger sensing information to generate a front-seat passenger sensing signal; and determining the primary viewer state according to the front-seat passenger sensing signal. ### Claim 9 (depends on 8) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 8, wherein the front-seat passenger sensing information comprises seat pressure sensing information, seat belt buckle sensing information, or both. ### Claim 10 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the display signal comprises a display panel signal and a backlight signal. ### Claim 11 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the display signal comprises a display panel signal. ### Claim 12 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein after the image is projected onto the windshield, the step of determining the primary viewer state is performed again following a third period. ### Claim 13 (depends on 12) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 12, wherein the third period is between 0.1 seconds and 0.75 seconds. ### Claim 14 (depends on 13) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 13, wherein the third period is 0.5 seconds. ### Claim 15 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the corresponding content correction signal and the corresponding gamma correction signal are stored in a memory and are read according to the primary viewer state. ### Claim 16 (depends on 1) The method for the automotive device to project an image onto the windshield for viewing by the primary viewer as claimed in claim 1, wherein the corresponding content correction signal and the corresponding gamma correction signal are generated by interpolation.