Hongtao T Zhu

20080001970, Jan 3, 2008

Sep 5, 2006

11/515562

Jason Herrick - Newark CA, US
Darren Neuman - Palo Alto CA, US
Hongtao Zhu - Union City CA, US
Philip Truong - San Jose CA, US

G09G 5/00

345634

Methods and systems for mosaic mode display of video are disclosed. Aspects of one method may include generating video data for a plurality of video windows using a single video feeder module comprising a single video scaler and a single video capture module. The video data for the video windows may be generated in a single frame time. Register DMA may be used to transfer register update data (RUD) to a plurality of registers to configure video processing for generating video data for a video window. The plurality of RUDs may be generated in response to a single interrupt to a processor, and may be configured as a linked list or stored sequentially in memory. The configuring may occur prior to generating video data for the corresponding video window. Video processing for a subsequent video window may be configured automatically after generating video data for the present video window.

20190392000, Dec 26, 2019

Sep 5, 2019

16/561392

- Singapore, SG
Richard Wyman - Santa Clara CA, US
Hongtao Zhu - Santa Clara CA, US

G06F 16/738
H04N 21/235
H04N 5/235
G06T 5/00

In some aspects, the disclosure is directed to methods and systems for synchronization management of high dynamic range (HDR) media metadata. A synchronization controller of a media device may receive a first set of HDR media metadata provided in connection with one or more images of media. The synchronization controller may disable a metadata synchronization indicator provided to each core of a plurality of processing cores of the media device, responsive to receiving the first set of HDR media metadata. The synchronization controller may write the first set of HDR media metadata to a first memory location while the metadata synchronization indicator is disabled. The synchronization controller may enable the metadata synchronization indicator, responsive to completion of writing of the first set of HDR media metadata to the first memory location.

20190130035, May 2, 2019

Oct 30, 2017

15/798254

- Singapore, SG
Richard Wyman - Santa Clara CA, US
Hongtao Zhu - Santa Clara CA, US

Avago Technologies General IP (Singapore) Pte. Ltd. - Singapore

G06F 17/30
G06T 5/00
H04N 5/235
H04N 21/235

In some aspects, the disclosure is directed to methods and systems for synchronization management of high dynamic range (HDR) media metadata. A synchronization controller of a media device may receive a first set of HDR media metadata provided in connection with one or more images of media. The synchronization controller may disable a metadata synchronization indicator provided to each core of a plurality of processing cores of the media device, responsive to receiving the first set of HDR media metadata. The synchronization controller may write the first set of HDR media metadata to a first memory location while the metadata synchronization indicator is disabled. The synchronization controller may enable the metadata synchronization indicator, responsive to completion of writing of the first set of HDR media metadata to the first memory location.

20140355625, Dec 4, 2014

Jul 9, 2013

13/938157

- Irvine CA, US
Yong LI - San Diego CA, US
Rajesh Shankarrao MAMIDWAR - San Diego CA, US
Hongtao ZHU - San Jose CA, US

H04L 12/24

370468

A distributed adaptive bit rate (ABR) proxy system may include a gateway device that includes a first transcoder and is configured to receive segments of a content item from an ABR server, and a secondary device that includes a second transcoder and is configured to receive the segments of the content item from the gateway device. The first transcoder may transcode the segments based at least in part on a first ABR profile to generate first transcoded segments, and the second transcoder may transcode the segments based at least in part on a second ABR profile to generate second transcoded segments. The gateway device may advertise the first and second ABR profiles to user devices and may transmit the first transcoded segments to the user devices in response to requests therefor. The secondary device may transmit the second transcoded segments to the user devices in response to requests therefor.

20140359155, Dec 4, 2014

Sep 17, 2013

14/029745

- Irvine CA, US
Rajesh Shankarrao Mamidwar - San Diego CA, US
Brian Allen Heng - Irvine CA, US
Alexander Garland Macinnis - Los Altos CA, US
Hongtao Zhu - San Jose CA, US

Broadcom Corporation - Irvine CA

H04L 29/06

709231

Systems and methods for transmitting content using segment-based and non-segment-based streams are provided. In some aspects, a method includes identifying at least one segment-based stream of content. Each segment-based stream is associated with a respective first bit rate and includes one or more segments of the content. The method also includes identifying at least one non-segment-based stream of the content. Each non-segment-based stream is associated with a second bit rate and includes a continuous stream of the content. The method also includes enabling switching between use of i) the at least one segment-based stream and ii) the at least one non-segment-based stream to continuously transmit the content to one or more client devices.

20140359166, Dec 4, 2014

Jul 1, 2013

13/933046

- Irvine CA, US
Wade Keith Wan - Orange CA, US
Hongtao Zhu - San Jose CA, US

H04L 29/08
H04L 29/06

709247, 709246

An device and method for providing multiple adaptive bit rate (ABR) streams using a single transcoder is disclosed. The device receives a group of content segments for a media channel, and converts, using a transcoder, a first of the content segments from a source format to a first data format, a first time duration for converting the first content segment being less than a second time duration for receiving each group of segments. The converted segment is then sent to a client device. On receiving a request from the device for content segments in a second data format, the device performs an initialization of the transcoder to convert content segments from the source format to the second data format, the initialization being completed during a residual period of time, or “operational gap” produced by a difference between the first time duration and the second time duration.

20140317372, Oct 23, 2014

Jun 19, 2013

13/922186

- Irvine CA, US
Hongtao ZHU - San Jose CA, US

G06F 12/14

711163

A method of securing a data frame is provided. The method includes receiving a request from a memory client to read or write decoded data in a memory. The memory may be partitioned to have a secure memory region and an unsecure memory region. The method also includes determining if the request is associated with the secure memory region or the unsecure memory region. The method also includes determining whether the memory client has access privileges to the secure memory region if the request is associated with the secure memory region. The method also includes granting the request if the memory client is determined to have access privileges.

20140153909, Jun 5, 2014

Sep 30, 2013

14/041024

- Irvine CA, US
Hongtao Zhu - San Jose CA, US
Jason William Herrick - Pleasanton CA, US
Brian Francis Schoner - Fremont CA, US
Junlin Li - San Jose CA, US

H04N 9/80
H04N 7/26

386353

Disclosed are various embodiments directed to transcoding a bit stream comprising audio and video frames that contains discontinuities. The video and/or audio portion of the bit stream may be divided into segments, where some of the segments are transcoded in parallel using a plurality of transcoder devices. In some embodiments, a discontinuity is detected in the bit stream before encoding, where the discontinuity is associated with a shift in a set of time stamps associated with the bit stream. A magnitude of the discontinuity is determined. The transcoding system aligns at least a portion of the audio frames to the series of video frames according to at least the discontinuity and the magnitude of the discontinuity. In other embodiments, the discontinuity is detected after encoding by analyzing time stamps that have been established during the transcoding process.