Inventor

Xin Zhao

Inventor

San Diego, CA, US

Overview

1992–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 154 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Nprimary

H04NPictorial communication, e.g. television40%

H03FAmplifiers7%

G06FElectric digital data processing6%

H03GControl of amplification4%

H03MCoding3%

H04LTransmission of digital information, e.g. telegraphic communication3%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light2%

G21CNuclear reactors2%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems2%

PatentTitleYear

10,880,564Transform selection for video coding2020 10,873,762Non-separable secondary transform for video coding2020 10,848,763Method and apparatus for improved context design for prediction mode and coded block flag (CBF)2020 10,848,788Multi-type-tree framework for video coding2020 10,841,593Intra prediction and intra mode coding2020 10,841,578Method and apparatus for using an intra prediction coding tool for intra prediction of non-square blocks in video compression2020 10,841,616Fast method for implementing discrete sine transform type VII (DST 7) using a set of tuples2020 10,834,393Intra interpolation filter for multi-line intra prediction2020 10,827,171Method and apparatus for video coding2020 10,819,986Method and apparatus for intra mode coding2020 10,817,001Unmanned aerial vehicle and method for detecting flight state thereof, and wearable device2020 10,819,979Coupled primary and secondary transform2020 10,819,977Methods and apparatus for multiple line intra prediction in video compression2020 10,812,797Method, apparatus and medium for decoding or encoding using a low-complexity transform2020 10,805,641Intra filtering applied together with transform processing in video coding2020 10,798,382Sub-block transform2020 10,797,378Smart watch and antenna signal processing circuit and method thereof2020 10,791,341Binary arithmetic coding with progressive modification of adaptation parameters2020 10,778,971Method and apparatus for video coding2020 10,771,778Method and device for MPM list generation for multi-line intra prediction2020 10,771,782Method and apparatus for video coding2020 10,762,317Quick response (QR) code deformation2020 10,763,811Gain control in a class-D open-loop amplifier2020 10,764,587Intra prediction in video coding2020 10,735,730Flexible tree structure2020 10,735,722Intra prediction with wide angle mode in video coding2020 10,726,873Polymorphic playback system with signal detection filters of different latencies2020 10,727,860Increased noise performance using quantizer code suppression2020 10,708,164Binarizing secondary transform index2020 10,701,391Motion vector difference (MVD) prediction2020 10,701,486Low-latency audio output with variable group delay2020 10,701,355Method and apparatus of directional intra prediction2020 10,701,358Mode dependent primary and secondary transforms2020 10,687,081Method, apparatus and medium for decoding or encoding2020 10,681,379Non-separable secondary transform for video coding with reorganizing2020 10,671,901Layered barcodes readable from multiple angles in three dimensions2020 10,666,937Low-complexity sign prediction for video coding2020 10,666,981Method, apparatus and medium for decoding or encoding2020 10,663,531Digital short detection method of class D amplifier2020 10,656,133Controlling plant detection systems using phase delay analysis2020 10,658,988Open-loop class-D amplifier system with analog supply ramping2020 10,659,781Concatenated coding units in flexible tree structure2020 10,652,534Methods and apparatus for directional intra prediction in video compression2020 10,651,801Closed-loop digital compensation scheme2020 10,645,396Method and apparatus for implicit transform splitting2020 10,641,179System and method for starting gas turbine engines2020 10,644,661Variable output resistance in a playback path with open-loop pulse-width modulation driver2020 10,638,126Intra reference filter for video coding2020 10,638,161Methods and apparatus for most probable mode derivation2020 10,630,979Reference sample padding and filtering for intra prediction in video compression2020 10,623,748Method and apparatus for video coding2020 10,623,737Peak sample adaptive offset2020 10,623,774Constrained block-level optimization and signaling for video coding tools2020 10,616,593Method and apparatus for video coding2020 10,616,043Real-time probabilistic root cause correlation of network failures2020 10,609,402Method and apparatus for prediction and transform for small blocks2020 10,609,367Low-complexity sign prediction for video coding2020 10,594,310Full-scale range enhancement in a dual-path pulse width modulation playback system2020 10,567,752Method and apparatus for intra prediction for non-square blocks in video compression2020 10,567,759Using luma information for chroma prediction with separate luma-chroma framework in video coding2020 10,567,801Method and apparatus for video coding with primary and secondary transforms2020 10,547,854Neighbor based signaling of intra prediction modes2020 10,544,014Method for hoisting and transporting assemblies in underground nuclear power plant2020 10,536,720Method, apparatus and medium for decoding or encoding2020 10,531,122Method and apparatus for coded block flag coding in high efficiency video coding2020 10,516,885Method and apparatus for video coding2019 10,506,228Variable number of intra modes for video coding2019 10,505,454Cross regulation reduction in single inductor multiple output (SIMO) switching DC-DC converters2019 10,506,246Multi-type-tree framework for video coding2019 10,496,897Method and apparatus for recognizing RGB-D objects based on adaptive similarity measure of dense matching item2019 10,491,893Method and apparatus for multi-line intra prediction2019 10,491,914Transform information prediction2019 10,491,922Non-separable secondary transform for video coding2019 10,484,712Implicit coding of reference line index used in intra prediction2019 10,476,444Cross-fading in dual-path pulse width modulation system2019 10,469,869Method and apparatus for video coding2019 10,469,845Method and apparatus for intra mode coding2019 10,462,486Fast method for implementing discrete sine transform type VII (DST 7)2019 10,455,228Determining prediction parameters for non-square blocks in video coding2019 10,448,053Multi-pass non-separable transforms for video coding2019 10,447,217Amplifier with configurable final output stage2019 10,432,929Method and apparatus for multiple line intra prediction in video compression2019 10,425,648Video intra-prediction using position-dependent prediction combination for video coding2019 10,419,754Method and apparatus for video decoding using multiple line intra prediction2019 10,412,479Headset management by microphone terminal characteristic detection2019 10,404,980Intra prediction with wide angle mode in video coding2019 10,404,999Residual coding for depth intra prediction modes2019 10,404,248Calibration of a dual-path pulse width modulation system2019 10,394,986Model order reduction in transistor level timing2019 10,392,937Construction layout for caverns of underground nuclear power plant2019 10,390,048Efficient transform coding using optimized compact multi-pass transforms2019 10,382,781Interpolation filters for intra prediction in video coding2019 10,382,772Method and apparatus for video coding2019 10,373,720Migration prevention system for radioactive wastewater of underground nuclear power plant2019 10,375,411Predictor for depth map intra coding2019 10,375,422Method and apparatus for motion field based tree splitting2019 10,368,072Advanced arithmetic coder2019 10,368,107Intra video coding using a decoupled tree structure2019 10,360,329Multi-cycle signal identification for static timing analysis2019 10,356,422Fast rate-distortion optimized quantization2019 10,349,085Efficient parameter storage for compact multi-pass transforms2019 10,326,986Intra video coding using a decoupled tree structure2019 10,316,662Construction layout for underground caverns in nuclear island powerhouse of underground nuclear power plant2019 10,320,337Fully-differential operational amplifier system2019 10,321,230Switching in an audio system with multiple playback paths2019 10,306,229Enhanced multiple transforms for prediction residual2019 10,306,222Method and apparatus of directional intra prediction2019 10,291,932Method and apparatus for low complexity quarter pel generation in motion search2019 10,284,866Method and apparatus for video coding2019 10,284,860Method and apparatus for video coding2019 10,284,844Method and apparatus for video coding2019 10,263,584Calibration of a dual-path pulse width modulation system2019 10,236,827Offset calibration for amplifier and preceding circuit2019 10,224,877Closed-loop digital compensation scheme2019 10,212,444Multi-type-tree framework for video coding2019 10,200,719Modification of transform coefficients for non-square transform units in video coding2019 10,181,845Calibration of a dual-path pulse width modulation system2019 10,164,401Method for generating sub-nanosecond pulse laser2018 10,148,961Arithmetic coder with multiple window sizes2018 10,142,627Intra prediction and intra mode coding2018 10,094,217Construction layout for caverns of underground nuclear power plant2018 10,085,027Adaptive mode checking order for video encoding2018 10,057,574Coding tree unit (CTU) level adaptive loop filter (ALF)2018 10,031,988Model order reduction in transistor level timing2018 10,009,686Fully-differential current digital-to-analog converter2018 10,008,992Switching in amplifier with configurable final output stage2018 9,998,742Adaptive cross component residual prediction2018 9,930,330'Method and apparatus for coded block flag coding in high efficiency video coding'2018 9,929,703'Amplifier with configurable final output stage'2018 9,917,557'Calibration for amplifier with configurable final output stage'2018 9,900,619'Intra-coding of depth maps for 3D video coding'2018 9,885,614'Method and apparatus for multifrequency optical comb generation'2018 9,883,187'Fast video encoding method with block partitioning'2018 9,863,815'Method and apparatus for multifrequency optical comb generation'2018 9,853,539Systems and methods for measuring inductor current in a switching DC-to-DC converter2017 9,756,359'Large blocks and depth modeling modes (DMM\'S) in 3D video coding'2017 9,742,911'Dialing method and device'2017 9,723,313'Method and device for encoding and decoding videos using a best transformation matrix among multiple transformation matrices'2017 9,613,171'Multi-cycle signal identification for static timing analysis'2017 9,544,601'Wedgelet pattern extension for depth intra coding'2017 9,516,306'Depth coding modes signaling of depth data for 3D-HEVC'2016 9,501,608'Timing analysis of circuits using sub-circuit timing models'2016 9,491,087'Devices and methods for forwarding information base aggregation'2016 9,461,537'Systems and methods for measuring inductor current in a switching DC-to-DC converter'2016 9,369,708'Depth coding modes signaling of depth data for 3D-HEVC'2016 9,337,795'Systems and methods for gain calibration of an audio signal path'2016 9,273,994'Method and apparatus for optical asynchronous sampling signal measurements'2016 9,250,128'Method and apparatus for optical asynchronous sampling signal measurements'2016 9,214,948'Comparator tracking control scheme with dynamic window length'2015 9,215,245'Exploration system and method for analyzing behavior of binary executable programs'2015 8,664,989'Method to increase frequency resolution of a fractional phase-locked loop'2014 8,416,416'Measuring method for SPR and system thereof'2013 5,726,855'Apparatus and method for enabling the creation of multiple extended conduction paths in the atmosphere'1998 5,175,664'Discharge of lightning with ultrashort laser pulses'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2020Based in Austin, TX, US· patent location history

2013–2020Based in Beijing, CN· patent location history

2014–2020Patents assigned to CIRRUS LOGIC INC (29)· patent assignee history

2016–2020Patents assigned to QUALCOMM INC (48)· patent assignee history

2016–2020Patents assigned to IBM (8)· patent assignee history

2016–2020Based in San Diego, CA, US· patent location history

2016–2019Based in Hopewell Junction, NY, US· patent location history

2018–2020Patents assigned to CIRRUS LOGIC INT SEMICONDUCTOR LTD (24)· patent assignee history

2018–2020Based in Wuhan, CN· patent location history

2019–2020Patents assigned to Tencent America LLC (43)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
QUALCOMM INC	48	2016–2020
Tencent America LLC	43	2019–2020
CIRRUS LOGIC INC	29	2014–2020
CIRRUS LOGIC INT SEMICONDUCTOR LTD	24	2018–2020
IBM	8	2016–2020

Locations

Location	Patents	Span
San Diego, California, US	88	2016–2020
Austin, Texas, US	30	1998–2020
Beijing, CN	13	2013–2020
Wuhan, CN	5	2018–2020
Hopewell Junction, New York, US	5	2016–2019