Seyed M Navidpour

20080101502, May 1, 2008

Sep 24, 2007

11/860529

Seyed M. Navidpour - Sunnyvale CA, US
Farrokh Farrokhi - San Ramon CA, US
Andrea Goldsmith - Menlo Park CA, US

Quantenna Communications, Inc. - Sunnyvale CA

H04K 1/02

375296

A technique for PAR reduction involves producing an optimized clipping pulse. The optimized clipping pulse may be designed to meet certain requirements, such as a spectral mask target or an EVM target, when applied to a signal.

20170293372, Oct 12, 2017

Apr 12, 2017

15/485698

- Cupertino CA, US
Wayne C. WESTERMAN - Burlingame CA, US
Seyed Mohammad NAVIDPOUR - San Jose CA, US
Shahrooz SHAHPARNIA - Monte Sereno CA, US

Apple Inc. - Cupertino CA

G06F 3/0354
G06F 3/038
G06F 3/044

In one aspect, the present disclosure relates to a method including determining which sense lines are potentially corrupted based on touch image information, measuring a sense signal on each sense line, and applying a trained best compensation factor to the measured sense signal on potentially corrupted sense lines in order to produce a corrected sense signal. The corrected sense signal eliminates active stylus signal that has cross-coupled to a touch contact (e.g., a finger or conductive stylus) and thereby mitigates errors in stylus location due to cross-coupled signal.

20170242499, Aug 24, 2017

Feb 24, 2016

15/052435

- Cupertino CA, US
Seyed M. NAVIDPOUR - Cupertino CA, US

Apple Inc. - Cupertino CA

G06F 3/0354

In one aspect, the present disclosure relates to a method and system for performing a noise correction technique including determining core electrodes and non-core electrodes, generating a noise estimate for each electrode based on electrodes that are at least an offset distance away from the electrode, correcting the signal at each electrode based on the noise estimate, and setting the corrected signal to zero if the corrected signal has a sign that is opposite the sign of the peak magnitude signal. By performing this method, noise induced on sense lines of a stylus by an LCD can be corrected for and accuracy of stylus positioning may be improved.

20170083152, Mar 23, 2017

Sep 21, 2015

14/860364

- Cupertino CA, US
Albert LIN - Cupertino CA, US
Isaac CHAN - Sunnyvale CA, US
Martin Paul GRUNTHANER - Los Altos Hills CA, US
Prathit BUGNAIT - Sunnyvale CA, US
Seyed Mohammad NAVIDPOUR - San Jose CA, US
Sumant RANGANATHAN - Saratoga CA, US

G06F 3/041
G06F 3/0354
G06F 3/044

Electrode configurations for reducing wobble error for a stylus translating on a surface of a touch sensor panel is disclosed. Electrodes associated with a more linear signal profile can correlate to lower wobble error. In some examples, electrodes can be configured such that the signal profile associated with each electrode is spread to be wider, and thus, more linear. In some configurations, electrodes can include two or more bars extending along the length of the electrode with each bar electrically connected to one another at one or both ends. Bars can be of non-uniform width or spacing. Some configurations can include a “split bar,” which can divide a bar lengthwise in order to improve optical uniformity. In some examples, electrodes can include projections which can interleave with corresponding projections in adjacent electrodes.