Dzung A Hoang from Lakewood, CO, age 57

Us Patents

Motion-Adaptive De-Interlacing Method And System For Digital Televisions
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US Patent:

6847405, Jan 25, 2005
Filed:

Sep 14, 2001
Appl. No.:

09/953465
Inventors:

Chi-Yuan Hsu - San Jose CA, US
Dzung Tien Hoang - San Jose CA, US
Assignee:

Sony Corporation - Tokyo
Sony Electronics, Inc. - Park Ridge NJ
International Classification:

H04N 1100
US Classification:

348452, 348700
Abstract:

One embodiment of the present invention provides a method and system for transforming a video bitstream in an interlaced format into a progressive format which can be displayed by a digital television. For example, the present embodiment utilizes the pixel information of a current field, previous field, and future field of the interlaced video bitstream to try to determine what the original content is of the missing lines of the current field. Specifically, the present embodiment utilizes different sets of pixel information in order to estimate the amount of motion that exist within a video bitstream. In this manner, the present embodiment is able to more closely determine the original value of the missing pixels of each field of the interlaced video bitstream. Therefore, the present embodiment provides a de-interlacing function enabling digital televisions to receive interlaced video bitstreams and display them in the progressive format.

Perceptually Adaptive Quantization Parameter Selection
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US Patent:

8064517, Nov 22, 2011
Filed:

Sep 7, 2007
Appl. No.:

11/852199
Inventors:

Eric Viscito - Saratoga CA, US
Dzung Hoang - Austin TX, US
Assignee:

Zenverge, Inc. - Cupertino CA
International Classification:

H04N 11/02
G06K 9/46
H04N 7/12
US Classification:

37524003, 382239, 382252
Abstract:

A system (and a method) are disclosed for adaptively selecting quantization parameter for each region of input video signal to be encoded within a video processing system. The system includes a frame partition module, an edge feature detector, a macroblock adaptive quantization energy (AQEnergy) evaluator and a macroblock adaptive quantization parameter selector. The frame partition module partitions a frame of an input video signal into smaller blocks of pixel data. The edge feature detector generates an edge direction histogram for each block to be encoded. The macroblock AQEnergy evaluator receives the edge direction histogram of the block, calculates the AQEnergy of the block and generates the adaptive quantization score (AQScore) of the macroblock. The macroblock adaptive quantization parameter selector selects an appropriate macroblock quantization parameter corresponding to the macroblock AQScore by a combination of programmable scaling and threshold logic.

Intermediate Compression Of Reference Frames For Transcoding
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US Patent:

8199820, Jun 12, 2012
Filed:

Jan 28, 2009
Appl. No.:

12/361440
Inventors:

Anthony D. Masterson - Saratoga CA, US
Dzung Tien Hoang - Austin TX, US
Assignee:

Zenverge, Inc. - Santa Clara CA
International Classification:

H04N 7/12
G01R 31/08
US Classification:

37524012, 37524003, 370232
Abstract:

A system (and a method) for compressing reference frames in a video transcoder. A transcoder receives a compressed input stream in a first compressed format and output a compressed output stream in a second compressed format. A decoder and an encoder in the transcoder use compressed reference frames. The reference frames are compressed by transforming a block of pixels from a spatial domain to a frequency domain to generate a coefficient array. The coefficient array is quantized and encoded to compress the size of the coefficients array to the size of a fixed bucket. The values of the entropy coded and quantized array are stored in a memory for use in decoding and/or encoding.

Streamlined Transcoder Architecture
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US Patent:

8311114, Nov 13, 2012
Filed:

Dec 6, 2006
Appl. No.:

11/567678
Inventors:

Anthony D. Masterson - Saratoga CA, US
Dzung T. Hoang - Austin TX, US
Alexander N. Kipnis - Mountain View CA, US
Assignee:

Zenverge, Inc. - Santa Clara CA
International Classification:

H04N 7/36
US Classification:

37524016, 37524012
Abstract:

Systems and methods for a streamlined transcoder architecture. A transcoder system includes an encoder and a decoder. The encoder compares a decoded frame and a encoder reference frame to produce an output stream. The decoder produces the decoded frame including decoder reference frame and the encoder reference frame. The decoded frame is produced from an input stream, and the encoder reference frame is produced from the output stream of the encoder. In one embodiment, the encoder refines motion vectors, quantization, and macroblock type/mode from the input stream for reuse in the output stream. Furthermore, the decoded frames from the input stream can be modified in various ways including changing picture resolution and performing image enhancement on them before encoding.

Motion Compensated Noise Reduction Using Shared Motion Estimation Engine
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US Patent:

8351510, Jan 8, 2013
Filed:

Jan 29, 2009
Appl. No.:

12/362436
Inventors:

Anthony D. Masterson - Saratoga CA, US
Alexander N. Kipnis - Mountain View CA, US
Dzung Tien Hoang - Austin TX, US
Assignee:

Zenverge, Inc. - Santa Clara CA
International Classification:

H04N 7/12
G06K 9/36
US Classification:

37524016, 382236
Abstract:

An apparatus and method for generating predictors performs motion estimation of a target macroblock in a target field against data segments in reference fields. The same motion estimation engine is used to perform various image processing operations to efficiently use resources of the apparatus. Different reference fields are used depending on modes of operation. In a deinterlacing mode, deinterlacing is performed using directional interpolation, recursive motion compensated deinterlacing, and motion adaptive deinterlacing.

Streamlined Transcoder Architecture
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US Patent:

8488679, Jul 16, 2013
Filed:

Sep 11, 2012
Appl. No.:

13/610522
Inventors:

Anthony D. Masterson - Saratoga CA, US
Dzung T. Hoang - Austin TX, US
Alexander N. Kipnis - Mountain View CA, US
Assignee:

Zenverge, Inc. - Santa Clara CA
International Classification:

H04N 7/36
US Classification:

37524016, 37524012
Abstract:

Systems and methods for a streamlined transcoder architecture. A transcoder system includes an encoder and a decoder. The encoder compares a decoded frame and a encoder reference frame to produce an output stream. The decoder produces the decoded frame including decoder reference frame and the encoder reference frame. The decoded frame is produced from an input stream, and the encoder reference frame is produced from the output stream of the encoder. In one embodiment, the encoder refines motion vectors, quantization, and macroblock type/mode from the input stream for reuse in the output stream. Furthermore, the decoded frames from the input stream can be modified in various ways including changing picture resolution and performing image enhancement on them before encoding.

Motion Estimation Engine For Performing Multiple Types Of Operations
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US Patent:

8503533, Aug 6, 2013
Filed:

Jan 29, 2009
Appl. No.:

12/362394
Inventors:

Anthony D. Masterson - Saratoga CA, US
Alexander N. Kipnis - Mountain View CA, US
Dzung Tien Hoang - Austin TX, US
Assignee:

Zenverge, Inc. - Santa Clara CA
International Classification:

H04N 7/12
G06K 9/36
US Classification:

37524016, 382236
Abstract:

An apparatus and method for generating predictors performs motion estimation of a target macroblock in a target field against data segments in reference fields. The same motion estimation engine is used to perform various image processing operations to efficiently use resources of the apparatus. Different reference fields are used depending on modes of operation. In a deinterlacing mode, deinterlacing is performed using directional interpolation, recursive motion compensated deinterlacing, and motion adaptive deinterlacing.

Enhanced Deinterlacing Using Predictors From Motion Estimation Engine
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US Patent:

8508661, Aug 13, 2013
Filed:

Jan 29, 2009
Appl. No.:

12/362415
Inventors:

Anthony D. Masterson - Saratoga CA, US
Alexander N. Kipnis - Mountain View CA, US
Dzung Tien Hoang - Austin TX, US
Assignee:

Zenverge, Inc. - Santa Clara CA
International Classification:

H04N 7/01
H04N 11/20
H04N 5/14
H04N 9/64
H04N 7/12
G06K 9/32
G09G 5/00
US Classification:

348452, 348448, 348699, 37524016, 37524015, 37524001, 382300, 345606
Abstract:

An apparatus and method for generating predictors performs motion estimation of a target macroblock in a target field against data segments in reference fields. The same motion estimation engine is used to perform various image processing operations to efficiently use resources of the apparatus. Different reference fields are used depending on modes of operation. In a deinterlacing mode, deinterlacing is performed using directional interpolation, recursive motion compensated deinterlacing, and motion adaptive deinterlacing.

Resumes

Dzung Hoang

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Dzung Hoang Long Beach, CA

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Work:

IKEA

Sep 2005 to Present
Goods Flow Coordinator Customer Service Representative
Feb 2004 to Sep 2005

Education:

California State University of Dominguez Hills Carson
Carson, CA
Jan 2009 to Jan 2011
Bachelor of Science in Business Administration-Management and Human Resources Long Beach City College
Aug 2003 to Dec 2008
General Education

Name / Title

Company / Classification

Phones & Addresses

Dzung Hoang
State Systems

Centers for Medicare and Medicaid Services
Public Health Agency

1600 Broadway, Denver, CO 80202
3038442111