new TOP 200 Companies filing patents this week

new Companies with the Most Patent Filings

Dazhong Zhang patents

Recent patents with Dazhong Zhang listed as an inventor - additional entries may be under other spellings.


Dazhong Zhang - Related organizations: Apple Inc. patents

Techniques for resource conservation during performance of intra block copy prediction searches

12/08/16 - 20160360234 - Methods are described for encoding and decoding blocks of image data using intra block copying (IBC). A source block for intra block copying is selected from a source region of a current image that is closer to the current block than a threshold, wherein the source region does not include
Inventors: Alexandros Michael Tourapis, David William Singer, Haitao Guo, Hsi-jung Wu, Sorin C. Cismas, Xiaohua Yang, Yeping Su, Dazhong Zhang

Video coding techniques for high quality coding of low motion content

12/08/16 - 20160360230 - Techniques for coding video data are described that maintain high precision coding for low motion video content. Such techniques include determining whether a source video sequence to be coded has low motion content. When the source video sequence contains low motion content, the video sequence may be coded as a
Inventors: Peikang Song, Jae Hoon Kim, Xiaosong Zhou, Chris Y. Chung, Hsi-jung Wu, Dazhong Zhang

Selective packet and data dropping to reduce delay in real-time video communication

12/08/16 - 20160360220 - Techniques are described for responding to changes in bandwidth that are available to transmit coded video data between an encoder and a decoder. When such changes in bandwidth occur, estimates may be derived of visual significance of coded video data that has not yet been transmitted and also video data
Inventors: Peikang Song, Jae Hoon Kim, Xiaosong Zhou, Chris Y. Chung, Hsi-jung Wu, Dazhong Zhang

Bandwidth management in devices with simultaneous download of multiple data streams

12/01/16 - 20160353118 - A method of managing resources on a terminal includes determining a number of downloaded video streams active at the terminal, prioritizing the active video streams, assigning a decoding quality level to each active video stream based on a priority assignment for each active video stream, and apportioning reception bandwidth to
Inventors: Dazhong Zhang, Hsi-jung Wu, Peikang Song, Yunfei Zheng, Chris Y. Chung, Jae Hoon Kim, Xiaosong Zhou

Techniques to overcome communication lag between terminals performing video mirroring and annotation operations

12/01/16 - 20160353057 - Techniques are disclosed for overcoming communication lag between interactive operations among devices in a streaming session. According to the techniques, a first device streaming video content to a second device and an annotation is entered to a first frame being displayed at the second device, which is communicated back to
Inventors: Chris Y. Chung, Dazhong Zhang, Hsi-jung Wu, Xiaosong Zhou

In loop chroma deblocking filter

12/03/15 - 20150350687 - Chroma deblock filtering of reconstructed video samples may be performed to remove blockiness artifacts and reduce color artifacts without over-smoothing. In a first method, chroma deblocking may be performed for boundary samples of a smallest transform size, regardless of partitions and coding modes. In a second method, chroma deblocking may
Inventors: Jiefu Zhai, Dazhong Zhang, Xiaosong Zhou, Chris Y. Chung, Hsi-jung Wu, Peikang Song, David R. Conrad, Jae Hoon Kim, Yunfei Zheng

Preencoder assisted video encoding

12/03/15 - 20150350686 - A method and system of using a pre-encoder to improve encoder efficiency. The encoder may conform to ITU-T H.265 and the pre-encoder may conform to ITU-T H. 264. The pre-encoder may receive source video data and provide information regarding various coding modes, candidate modes, and a selected mode for coding
Inventors: Xiaosong Zhou, Chris Y. Chung, David R. Conrad, Dazhong Zhang, Feng Yi, Hsi-jung Wu, Jae Hoon Kim, Jiefu Zhai, Peikang Song, Yunfei Zheng

Video quality adaptation with frame rate conversion

12/03/15 - 20150350654 - During video coding, frame rate conversion (FRC) capabilities of a decoder may be estimated. Based on the estimated FRC capabilities, an encoder may select a frame rate for a video coding session and may alter a frame rate of source video to match the selected frame rate. Thereafter, the resultant
Inventors: Chris Y. Chung, Hsi-jung Wu, Xiaosong Zhou, Dazhong Zhang

Image compression based on device orientation and location information

12/03/15 - 20150350653 - An encoding system may include a video source that provides video data to be coded, a video coder, a transmitter, and a controller to manage operation of the system. The controller may control the video coder to code and compress the image information from the video source into video data,
Inventors: Jae Hoon Kim, Shujie Liu, Dazhong Zhang, Xiaosong Zhou, Chris Y. Chung, Hsi-jung Wu

Efficient sao signaling

12/03/15 - 20150350650 - Methods and systems provide efficient sample adaptive offset (SAO) signaling by reducing a number of bits consumed for signaling SAO compared with conventional methods. In an embodiment, a single flag is used if a coding unit to a first scanning direction with respect to a given coding unit is off.
Inventors: Jae Hoon Kim, Chris Y. Chung, Hsi-jung Wu, Dazhong Zhang, Yunfei Zheng, Xiaosong Zhou

Adaptive syntax grouping and compression in video data

12/03/15 - 20150350646 - An encoding system may include a video source that captures video image, a video coder, and a controller to manage operation of the system. The video coder may encode the video image into encoded video data using a plurality of subgroup parameters corresponding to a plurality of subgroups of pixels
Inventors: Yunfei Zheng, Dazhong Zhang, Xiaosong Zhou, Chris Y. Chung, Hsi-jung Wu

Video coding with composition and quality adaptation based on depth derivations

12/03/15 - 20150350560 - Techniques for coding video data estimate depths of different elements within video content and identify regions within the video content based on the estimated depths. One of the regions may be assigned as an area of interest. Thereafter, video content of a region that is not an area of interest
Inventors: Xiaosong Zhou, Hsi-jung Wu, Chris Y. Chung, James O. Normile, Dazhong Zhang

Coherence groups: region descriptors for low bit rate encoding

12/11/14 - 20140362919 - The invention is directed to an efficient way for encoding and decoding video. Embodiments include identifying different coding units that share a similar characteristic. The characteristic can be, for example: quantization values, modes, block sizes, color space, motion vectors, depth, facial and non-facial regions, and filter values. An encoder may
Inventors: Xiaosong Zhou, Hsi-jung Wu, Chris Y. Chung, Albert E. Keinath, David R. Conrad, Yunfei Zheng, Dazhong Zhang, Jae Hoon Kim

Error resilient management of picture order count in predictive coding systems

03/27/14 - 20140086315 - Coding techniques for input video may include assigning picture identifiers to input frames in either long-form or short-form formats. If a network error has occurred that results in loss of previously-coded video data, a new input frame may be assigned a picture identifier that is coded in a long-form coding
Inventors: Dazhong Zhang, Xiaosong Zhou, Hsi-jung Wu

Predictive video coder with low power reference picture transformation

12/12/13 - 20130329799 - Video coders may perform perspective transformation of reference frames during coding in a manner that conserves processing resources. When a new input frame is available for coding, a camera position for the input frame may be estimated. A video coder may search for reference pictures having similar camera positions as
Inventors: Yao-chung Lin, Xiaosong Zhou, Hsi-jung Wu, Douglas Scott Price, Chris Y. Chung, Dazhong Zhang

Improved error correction coding for recovering multiple packets in a group in view of limited bandwidth

09/26/13 - 20130254620 - Coded video data may be transmitted between an encoder and a decoder using multiple FEC codes and/or packets for error detection and correction. Only a subset of the FEC packets need be transmitted between the encoder and decoder. The FEC packets of each FEC group may take, as inputs, data
Inventors: Xiaosong Zhou, Hyeonkuk Jeong, Yan Yang, Dazhong Zhang, Hsi-jung Wu

Object detection informed encoding

08/01/13 - 20130195178 - Embodiments of the present invention provide techniques for coding video data efficiently based on detection of objects within video sequences. A video coder may perform object detection on the frame and when an object is detected, develop statistics of an area of the frame in which the object is located.
Inventors: Douglas Scott Price, Hsi-jung Wu, Xiaosong Zhou, Dazhong Zhang

Video coding system using implied reference frames

07/05/12 - 20120170654 - A video coding/decoding system builds implied reference frames from a plurality of reference frames developed during coding. Coded data of reference pictures are decoded and stored in a reference picture cache. An implied reference frame may be derived from a plurality of reference frames and may be stored in the
Inventors: Ke Zhang, Dazhong Zhang, Douglas Scott Price, Hsi-jung Wu, Xiaosong Zhou

Method and apparatus for error resilient long term referencing block refresh

05/03/12 - 20120106632 - A system and method for coding video data wherein a pixel block may be coded for refresh with reference to an LTR frame that was successfully transmitted, or has a high probability of having been successfully transmitted from the encoder to the decoder. Not all pixel blocks in the frame
Inventors: Dazhong Zhang, Xiaosong Zhou, Hsi-jung Wu

Error correction coding

12/08/11 - 20110302473 - Coded video data may be transmitted between an encoder and a decoder using multiple FEC codes and/or packets for error detection and correction. Only a subset of the FEC packets need be transmitted between the encoder and decoder. The FEC packets of each FEC group may take, as inputs, data
Inventors: Xiaosong Zhou, Hyeonkuk Jeong, Yan Yang, Dazhong Zhang, Hsi-jung Wu

Video coding system using sub-channels and constrained prediction references to protect against data transmission errors

11/10/11 - 20110274167 - A coding technique is disclosed in which frames of a video sequence are assigned to one of a plurality of sub-channels to be transmitted to a decoder. The frames are coded according to predictive coding techniques such that ordinarily prediction references of the frames in each sub-channel only reach the
Inventors: Dazhong Zhang, Hsi-jung Wu, Xiaosong Zhou

Error resilient hierarchical long term reference frames

10/13/11 - 20110249729 - Embodiments of the present invention provide a video encoding system that codes video sequence into a multi-level hierarchy based on levels of long term reference (LTR) frames. According to the present invention, an encoder designates a reference frame as a long term reference (LTR) frame and transmits the LTR frame
Inventors: Xiaosong Zhou, Dazhong Zhang, Davide Concion, Hsi-jung Wu, Douglas Scott Price

Compression-quality driven image acquisition and processing system

10/13/11 - 20110249133 - Embodiments of the present invention provide a video encoding system in which a video coding engine establishes coding quality metrics that govern its own operation as well as the operation of a camera and/or a pre-processor. An imaging system may include an image acquisition system, a pre-processor and a coding
Inventors: Xiaosong Zhou, Douglas Scott Price, Hsi-jung Wu, Dazhong Zhang

Remote control operations in a video conference

10/13/11 - 20110249075 - Some embodiments provide a method for allowing a first device that is in a video conference with a second mobile device to remotely control the second mobile device. The method sends images captured by a camera of the first device to the second device. The method receives images captured by
Inventors: Joe S. Abuan, James O. Normile, Hsi-jung Wu, Haitao Guo, Douglas S. Price, Xiaosong Zhou, Dazhong Zhang, Berkat S. Tung, Roberto Garcia, Jr., Hyeonkuk Jeong, Yan Yang, David A. Eldred, Elizabeth C. Cranfill, Andrew Yanowitz, Ting Chen, David D. Kuo


### Dazhong Zhang patent invention listings

The bibliographic references displayed about Dazhong Zhang's patents are for a recent sample of Dazhong Zhang's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Dazhong Zhang filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

###



Sign up for the FreshPatents.com FREE Keyword Monitor and check for keyword phrases (ie. "RFID" , "wireless", "web development", "fuel cells" etc.)...You will be notified when new patent applications and inventions are published that match your keywords. Also you can save for later research public patent/invention documents using our FREE Organizer. It takes only 30 seconds to sign up or login.

Advertise on FreshPatents.com - Rates & Info

###

FreshPatents.com Support - Terms & Conditions