Inventor
ZHAO LIFENG
US28 patents
⚠️ This page may combine multiple inventors who share the name “ZHAO LIFENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
INTERVIDEO INC
8 patentsUS7221706B2May 22, 2007
Systems and methods for performing bit rate allocation for a video data stream
INTERVIDEO INC67 citations99
US7164717B2Jan 16, 2007
Systems and methods for detecting scene changes in a video data stream
INTERVIDEO INC65 citations99
US6940903B2Sep 6, 2005
Systems and methods for performing bit rate allocation for a video data stream
INTERVIDEO INC78 citations99
US6944224B2Sep 13, 2005
Systems and methods for selecting a macroblock mode in a video encoder
INTERVIDEO INC68 citations98
US6970506B2Nov 29, 2005
Systems and methods for reducing frame rates in a video data stream
INTERVIDEO INC49 citations97
US7110452B2Sep 19, 2006
Systems and methods for detecting scene changes in a video data stream
INTERVIDEO INC29 citations96
US7406124B1Jul 29, 2008
Systems and methods for allocating bits to macroblocks within a picture depending on the motion activity of macroblocks as calculated by an L1 norm of the residual signals of the macroblocks
INTERVIDEO INC10 citations83
US7388912B1Jun 17, 2008
Systems and methods for adjusting targeted bit allocation based on an occupancy level of a VBV buffer model
INTERVIDEO INC19 citations83
LINKPLAY TECH INC
8 patentsUS12277367B1Apr 15, 2025
User scenario-based audio playback method, apparatus and device, and storage medium
LINKPLAY TECH INC4 citations74
US12307161B1May 20, 2025
Audio parameter adjusting method, apparatus and device, and storage medium
LINKPLAY TECH INC5 citations71
US12418870B1Sep 16, 2025
Method, apparatus, and device of audio processing combining WiFi and bluetooth low energy BLE technologies, and storage medium
LINKPLAY TECH INC2 citations70
US12254243B1Mar 18, 2025
Audio playback method and apparatus, electronic device and storage medium
LINKPLAY TECH INC1 citations63
US12418352B1Sep 16, 2025
Multi-room multi-channel audio synchronization method, apparatus, and device and storage medium
LINKPLAY TECH INC1 citations59
US12219332B1Feb 4, 2025
Audio synchronization playback method, system and storage medium
LINKPLAY TECH INC1 citations59
US12309560B1May 20, 2025
Audio calibration method and system, and storage medium
LINKPLAY TECH INC0 citations50
US12418763B1Sep 16, 2025
Multi-room audio synchronous playback method, system, device, and storage medium
LINKPLAY TECH INC0 citations47
Baidu online network technology beijing co ltd
8 patentsUS11315555B2Apr 26, 2022
Terminal holder and far-field voice interaction system
Baidu online network technology beijing co ltd2 citations73
US11322138B2May 3, 2022
Voice awakening method and device
Baidu online network technology beijing co ltd3 citations72
US11127398B2Sep 21, 2021
Method for voice controlling, terminal device, cloud server and system
Baidu online network technology beijing co ltd2 citations65
US10964317B2Mar 30, 2021
Voice wakeup method, apparatus and system, cloud server and readable medium
Baidu online network technology beijing co ltd1 citations60
US11211075B2Dec 28, 2021
Service control method, service control apparatus and device
Baidu online network technology beijing co ltd0 citations58
US10908870B2Feb 2, 2021
Audio playing method, apparatus, device and server
Baidu online network technology beijing co ltd0 citations47
US10803861B2Oct 13, 2020
Method and apparatus for identifying information
Baidu online network technology beijing co ltd0 citations40
US10783884B2Sep 22, 2020
Electronic device-awakening method and apparatus, device and computer-readable storage medium
Baidu online network technology beijing co ltd0 citations37