Patent · US Active

Pulse-width modulation data decoder

US9203391B2 · kind B2 · utility

5Cited by

6References

27Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Zhi Zhu · San Diego, US
Xiaohua Kong · San Diego, US
Li Sun · San Diego, US
Jie Xu · Shanghai, CN

Key dates

Filing date	Apr 22, 2014
Grant date	Dec 1, 2015
Priority date	—
Expiry date	Apr 22, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02D10/00
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Systems and methods for decoding pulse-width modulated (PWM) data are disclosed. An example decoder filters a data input signal with a one-sided pulse filter. The one-sided pulse filter suppresses short pulses on the data input signal and passes long pulses. The example decoder latch the filtered data signal at the end of each bit time of the data input signal. The duration of pulses that are suppressed by the one-sided pulse filter can be calibrated to compensate for circuit variations and to allow the decoder to operate at various data rates. The decoder can be implemented in a small integrated circuit area and can be power efficient.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.