US 12,425,007 B2
Ramp signal calibration device
Yen-Wei Liu, Hsinchu (TW); Tsung-Yen Tsai, Hsinchu (TW); and Wen-Hau Yang, Hsinchu (TW)
Assigned to REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed by REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed on Apr. 28, 2022, as Appl. No. 17/731,272.
Claims priority of application No. 110116049 (TW), filed on May 4, 2021.
Prior Publication US 2022/0360256 A1, Nov. 10, 2022
Int. Cl. H03K 4/06 (2006.01); H03M 1/10 (2006.01)
CPC H03K 4/06 (2013.01) [H03M 1/1009 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A ramp signal calibration device, comprising:
a ramp generator circuit configured to output a ramp signal according to a set signal and a calibration signal;
a detector circuitry configured to detect the ramp signal or at least one pulse signal associated with the ramp signal, in order to generate at least one control signal; and
a calibration circuit configured to receive the at least one control signal and generate the calibration signal in response to the received at least one control signal, in order to adjust at least one of a falling slope or a rising slope of the ramp signal, wherein the detector circuitry is configured to detect the ramp signal at a time point defined by a corresponding edge of a falling edge and a rising edge of the ramp signal.