Patent ID: 11915395
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 7:
8. A computer for a holographic display system of a motor vehicle, the holographic display system providing a maximum intensity value of an intermediate image to decrease in real-time a graphics speckle noise, with the holographic display system including a light source for generating a beam of coherent light, a spatial light modulator (SLM) that has a display with hologram generating unit and a plurality of pixels for modulating the beam of coherent light, a beam splitter for splitting the beam of coherent light into an object beam and an intermediate image beam that is associated with an intermediate image having a graphics speckle noise, and a camera for capturing the intermediate image, the computer comprising:
at least one processor electronically connected to the light source, the SLM, and the camera; and
a non-transitory computer readable storage medium (CRM) storing instructions such that the at least one processor is programmed to:
receive the intermediate image from the camera;
compare at least one parameter to at least one threshold value in response to the at least one processor receiving the intermediate image from the camera; and
generate an actuation signal associated with a corrective holographic phase shift to decrease the graphics speckle noise for each of the pixels based on the intermediate image, such that the SLM modifies in real-time a holographic phase of the beam of coherent light per pixel in response to the SLM receiving the actuation signal from the at least one processor.