Chih C Liu

US Patent:

7118488, Oct 10, 2006

Filed:

Jan 21, 2005

Appl. No.:

11/040422

Inventors:

Benny Chan - Fremont CA, US
Suganda Jutamulia - Berkeley CA, US
Chih Yen Liu - Saratoga CA, US

Assignee:

Newtonics Spectra Inc. - Fremont CA

International Classification:

A63B 69/36

US Classification:

473220, 473119

Abstract:

A training putter with a laser line projecting device can be used for putting training to improve putting skill. The device is affixed to a putter head above its sweet spot, and emits a vertical light fan which projects a line on the around normal to the face of the putter head. The line is aligned with the sweet spot of the putter head and lies on the ground to connect the top of a golf ball with a target, such as a cup or a putting hole, so that alignment can be easily visualized. The device can be detached and reattached easily without any laser alignment. Furthermore, the device can be removably mounted to a user's own putter. The heat generated in the laser diode is quickly dissipated through the metal housing, the metal putter head, and the metal shaft to the surrounding air. Since proper operating temperature of the laser diode can be maintained, the laser diode will operate properly, which means the power of the emitted light will not be decreased, and the lifetime of the diode will not be shortened.

US Patent:

20140052966, Feb 20, 2014

Filed:

Aug 14, 2012

Appl. No.:

13/585348

Inventors:

Ali Vahidsafa - Palo Alto CA, US
Chih Heng Liu - Sunnyvale CA, US

International Classification:

G06F 9/30

US Classification:

712220, 712E09016

Abstract:

Mechanism for consistent core hang detection on a processor with multiple processor cores, each having one or more instruction execution pipelines. Each core may also include a hang detection unit with a counter unit that may generate a count value based on a clock source having a frequency that is independent of a frequency of a processor core clock. The hang detection unit may also include a detector logic unit that may determine whether a given instruction execution pipeline has ceased processing a given instruction based upon a state of the processor core and whether or not the given instruction has completed execution prior to the count value exceeding a predetermined value.