US 12,439,149 B2
Wearable device and image signal processing apparatus thereof
Guoming Rao, Shanghai (CN); Huimin Zhang, Shanghai (CN); Zhengfei Xiao, Shanghai (CN); and Bo Chen, Shanghai (CN)
Assigned to SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD., Shanghai (CN)
Appl. No. 18/023,437
Filed by SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD., Shanghai (CN)
PCT Filed Aug. 27, 2021, PCT No. PCT/CN2021/114896
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/042671, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. 202010900334.X (CN), filed on Aug. 31, 2020.
Prior Publication US 2024/0031672 A1, Jan. 25, 2024
Int. Cl. H04N 23/65 (2023.01); H04N 23/63 (2023.01); H04N 23/80 (2023.01)
CPC H04N 23/651 (2023.01) [H04N 23/631 (2023.01); H04N 23/80 (2023.01)] 16 Claims
OG exemplary drawing
 
1. An image signal processing apparatus for a wearable device, comprising an image acquisition device, an image data processor and an application processor, wherein:
the image data processor is in communication with the image acquisition device and the application processor;
the application processor is configured to control, in a case of detecting that the wearable device enables a shooting preview mode, the image data processor to switch from a sleep state or a power-down state to a working state;
the image acquisition device is configured to acquire original image data; and
the image data processor is configured to obtain the original image data and process the original image data;
wherein the image data processor comprises a first image data processor and a second image data processor;
the image acquisition device is in communication with the first image data processor, and the second image data processor is in communication with the image acquisition device and the first image data processor;
the first image data processor is configured to obtain the original image data, preprocess the original image data to obtain first image data, and transmit the first image data to the second image data processor;
the second image data processor is configured to process the first image data using a target algorithm to obtain a processing result, and control the image acquisition device and/or the first image data processor based on the processing result; and
operational power consumption of the second image data processor is less than operational power consumption of the application processor.