Liang Zhao

US Patent:

20130003783, Jan 3, 2013

Filed:

Jun 29, 2011

Appl. No.:

13/172653

Inventors:

Prasad Srinivasa Siva Gudem - San Diego CA, US
Liang Zhao - Sunnyvale CA, US
I-Hsiang Lin - Los Altos CA, US
Zhijie Xiong - San Jose CA, US
Bhushan Shanti Asuri - San Diego CA, US
Aristotele Hadjichristos - San Diego CA, US

Assignee:

QUALCOMM Incorporation - San Diego CA

International Classification:

H04B 1/707

US Classification:

375140, 375E01002

Abstract:

A global navigation satellite system receiver with filter bypass mode for improved sensitivity is disclosed. In an aspect, an apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter. The apparatus also includes a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by an unrelated local transmitter are transmitted with a signal power that exceeds a selected threshold, and to couple the antenna to the bypass signal path during other time intervals.

US Patent:

20220201508, Jun 23, 2022

Filed:

Mar 8, 2022

Appl. No.:

17/689639

Inventors:

- San Diego CA, US
Jie WU - San Diego CA, US
David Loweth WINSLOW - San Diego CA, US
Daniel FILIPOVIC - Solana Beach CA, US
Liang ZHAO - Saratoga CA, US

International Classification:

H04W 24/02
H04W 4/029

Abstract:

A wireless communication system includes: a first sub-system including a first radio and a second radio, each including a transceiver or a receiver; and a second sub-system coupled to the first sub-system and including: a first antenna configured to convey signals; a first tuner coupled to the first antenna; and a controller coupled to the first tuner, the controller being configured to cause the first tuner to adjust a characteristic of the first tuner; where the controller and/or the first tuner is configured to provide, to the first sub-system, an indication of an effect on operational performance of a portion of the second sub-system coupled to the second radio based on operation of the first tuner or the first antenna, or a combination thereof; where the first sub-system is configured to modify operation of the second radio based on the indication of the effect on operational performance.

US Patent:

20220191485, Jun 16, 2022

Filed:

Mar 1, 2022

Appl. No.:

17/684384

Inventors:

- Palo Alto CA, US
Xin ZHAO - San Diego CA, US
Liang ZHAO - Sunnyvale CA, US
Xiang LI - Saratoga CA, US
Shan LIU - San Jose CA, US

International Classification:

H04N 19/117
H04N 19/82
H04N 19/176
H04N 19/159
H04N 19/186
H04N 19/46

Abstract:

An image processing method includes obtaining statistics information of a block of an image frame, determining whether the statistics information satisfies a condition, and disabling cross-component filtering (CCF) for the block in response to the statistics information satisfying the condition.

US Patent:

20230071554, Mar 9, 2023

Filed:

Sep 9, 2021

Appl. No.:

17/470061

Inventors:

- San Diego CA, US
Le Nguyen LUONG - San Diego CA, US
Liang ZHAO - Saratoga CA, US
Rishabh RAJ - Jamshedpur, IN
Ravindra CHAUHAN - Chennai, IN

International Classification:

G07C 9/00
H04W 76/16

Abstract:

Techniques are provided for improving ranging accuracy of ultrawideband (UWB) devices. An example method for obtaining a distance measurement with a wireless node includes obtaining a first distance measurement using a first radio link, determining a status of a second radio link in response to the first distance measurement being less than a threshold distance, configuring one or more transceiver parameters associated with the second radio link in response to determining the second radio link is utilizing a non-line of sight path, and obtaining a second distance measurement using the second radio link and the one or more transceiver parameters.

US Patent:

20230063434, Mar 2, 2023

Filed:

Aug 26, 2021

Appl. No.:

17/412308

Inventors:

- San Diego CA, US
Daniel CAROLIN - San Diego CA, US
Angelica WONG - Palo Alto CA, US
Krishnaranjan RAO - Sunnyvale CA, US
Liang ZHAO - Saratoga CA, US
Jeffrey WONG - Saratoga CA, US

International Classification:

H04K 3/00
H04B 17/318

Abstract:

A method for inhibiting jammed signal use includes: receiving a desired signal wirelessly at a receiver; receiving an undesired signal wirelessly at the receiver, the undesired signal varying in strength over time; and inhibiting measurement of the desired signal, or use of a measurement of the desired signal, based on a determination that the undesired signal is a jamming signal based on a variation of the undesired signal being indicative of jamming.

US Patent:

20230067256, Mar 2, 2023

Filed:

Aug 25, 2021

Appl. No.:

17/411864

Inventors:

- San Diego CA, US
Pranav IYENGAR - San Diego CA, US
Liang ZHAO - Saratoga CA, US

International Classification:

H04K 3/00
H04W 64/00
H04W 76/25
H04B 7/22
H04W 88/02

Abstract:

A satellite signal processing method includes: receiving, at a user equipment, a first satellite signal of a first frequency band from at least one satellite of a constellation of satellites; receiving, at the user equipment, a second satellite signal of a second frequency band and from the at least one satellite of the constellation of satellites; and controlling an activation status of at least one of: a first satellite signal receive chain, of the user equipment, configured to measure the first satellite signal; or a second satellite signal receive chain, of the user equipment, configured to measure the second satellite signal.

US Patent:

20210337191, Oct 28, 2021

Filed:

Jul 9, 2021

Appl. No.:

17/371604

Inventors:

- Palo Alto CA, US
Xiang LI - San Diego CA, US
Shan LIU - San Jose CA, US
Liang ZHAO - Sunnyvale CA, US

Assignee:

TENCENT AMERICA LLC - Palo Alto CA

International Classification:

H04N 19/11
H04N 19/176
H04N 19/44

Abstract:

A method of video decoding includes determining, for a current block of a picture, one of a plurality of reference lines. The method includes determining an intra prediction mode for the current block in accordance with the determined one of the plurality of reference lines. The method further includes performing intra prediction for the current block based on the determined intra prediction mode and one or more samples included in the determined one of the plurality of reference lines. The plurality of reference lines includes an adjacent reference line that is adjacent to the current block and at least one non-adjacent reference line that is not adjacent to the current block, and each of the at least one non-adjacent reference line is associated with a decreasing number of intra prediction modes with respect to a direction away from the current block.

US Patent:

20210250775, Aug 12, 2021

Filed:

Feb 9, 2021

Appl. No.:

17/171915

Inventors:

- San Diego CA, US
Brian Clarke BANISTER - San Diego CA, US
Shrenik PATEL - San Diego CA, US
Michael KOHLMANN - San Francisco CA, US
Liang ZHAO - Saratoga CA, US
Le Nguyen LUONG - San Diego CA, US
Tevfik YUCEK - San Jose CA, US
Roland RICK - Winter Park CO, US
Shriram GURUMOORTHY - Denver CO, US
Francis NGAI - Louisville CO, US

International Classification:

H04W 16/14
H04W 4/80
H04W 52/36
H04W 52/24

Abstract:

A user equipment (UE) includes a first communication component configured to use a first frequency band, such as ultra-wide band (UWB), and a second communication component configured to use an intermediate frequency (IF) band that overlaps with the UWB band, such as an IF millimeter wave (mmWave) band. The second communication component conducts an IF signal along an internal signal conduction line that may interfere with UWB processing. A processor of the UE is configured to detect an indication of such interference, and, in response to the indication of interference, control the second communication component to adjust a characteristic of the IF band signal to mitigate the interference, such as by reducing its signal strength. The amount by which the IF band signal strength is reduced may be controlled to achieve a desired tradeoff between various performance metrics, such as power consumption and quality of service.