US 12,035,064 B2
PWM synchronisation
Mark Easton, Cambridge (GB); Paul Windle, Cambridge (GB); Ian Edward Charles Rogers, Cambridge (GB); Andrew Benjamin Simpson Brown, Cambridge (GB); and Christopher Richard Avery, Cambridge (GB)
Assigned to CAMBRIDGE MECHATRONICS LIMITED, Cambridge (GB)
Appl. No. 17/425,584
Filed by CAMBRIDGE MECHATRONICS LIMITED, Cambridge (GB)
PCT Filed Jan. 27, 2020, PCT No. PCT/GB2020/050174
§ 371(c)(1), (2) Date Jul. 23, 2021,
PCT Pub. No. WO2020/152481, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 1901074 (GB), filed on Jan. 25, 2019; and application No. 1903677 (GB), filed on Mar. 18, 2019.
Prior Publication US 2022/0141357 A1, May 5, 2022
Int. Cl. H04N 5/04 (2006.01); H04N 23/54 (2023.01); H05B 47/16 (2020.01)
CPC H04N 5/04 (2013.01) [H04N 23/54 (2023.01); H05B 47/16 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
synchronising an image sensor with a pulse width modulation (PWM) driver operable to drive an arrangement associated with the image sensor, wherein:
at least one synchronisation signal produced by the image sensor is used to reset the PWM driver; and
the at least one synchronisation signal comprises a frame synchronisation signal VSYNC and, after the PWM driver has been reset, the PWM driver continues by driving signals for one of: a preceding slot; a preceding sub-frame; or a preceding servo frame.