US 12,190,101 B2
Operating method of mouse chip
Jr-Yi Li, Hsin-Chu County (TW)
Assigned to PIXART IMAGING INC., Hsin-Chu County (TW)
Filed by PixArt Imaging Inc., Hsin-Chu County (TW)
Filed on May 6, 2022, as Appl. No. 17/738,324.
Application 17/738,324 is a continuation in part of application No. 17/136,480, filed on Dec. 29, 2020, granted, now 11,681,514.
Prior Publication US 2022/0261235 A1, Aug. 18, 2022
Int. Cl. G06F 8/654 (2018.01); G06F 3/06 (2006.01); G06F 13/10 (2006.01)
CPC G06F 8/654 (2018.02) [G06F 3/0604 (2013.01); G06F 3/0655 (2013.01); G06F 3/0679 (2013.01); G06F 13/102 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An operating method of a mouse chip arranged in a mouse device, the mouse chip comprising a flash chip, a flash controller, a random access memory (RAM) and a cache controller, the operating method comprising:
controlling, by the cache controller, the flash controller to read a flash driver of the mouse chip from a firmware in the flash chip to the RAM using a single mode of serial flash;
identifying, by the read flash driver of the mouse chip, a chip ID of the flash chip to confirm whether a high speed mode of serial flash of the flash chip is supported by the flash driver of the mouse chip;
accessing, by the flash controller, the flash chip using the high speed mode of serial flash upon confirming that the high speed mode of serial flash of the flash chip is supported by the flash driver of the mouse chip; and
updating the flash driver of the mouse chip in the firmware upon confirming that the high speed mode of serial flash of the flash chip is not supported by the flash driver of the mouse chip.