Xuemei Zhu Liu

US Patent:

20160359492, Dec 8, 2016

Filed:

Jun 2, 2016

Appl. No.:

15/172115

Inventors:

- St. Michael, BB
Xuemei LIU - Milpitas CA, US
Hui WANG - Pleasanton CA, US

International Classification:

H03L 7/08
H04L 7/00
H03K 5/06
H03L 7/081
H03L 7/091

Abstract:

A programmable delay line comprises a delay stage responsive to an analog control signal and responsive to one or more digital control signals. The delay stage generates an output signal that is delayed relative to an input signal by a delay amount. The delay amount controlled by a value of the analog control signal and one or more values of the digital control signals. A method for controlling a delay locked loop circuit comprises providing, to a programmable delay line of the delay locked loop circuit, a one or more digital signals, and providing, to the programmable delay line, an analog signal. A first portion of a delay produced by the programmable delay line corresponds to values of the one or more digital signals. A second portion of the delay produced by the programmable delay line corresponds to a value of the analog signal.

US Patent:

20140095062, Apr 3, 2014

Filed:

Sep 28, 2012

Appl. No.:

13/630253

Inventors:

- Fort Collins CO, US
Xuemei LIU - Palo Alto CA, US
Yanmin Zhu - Shanghai, CN

Assignee:

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. - Fort Collins CO

International Classification:

G01C 21/26
G06T 11/20

US Classification:

701409, 345442

Abstract:

A method of generating a road map from clusters of line segments of multiple datapoint sources. The method includes defining line segments for the datapoint sources between consecutive samples from the sources, grouping the line segments into clusters according to a position criterion, applying curve fitting to the clusters to obtain centerlines, and generating a road map from the center lines.