Xin Z Zhao

US Patent:

7356477, Apr 8, 2008

Filed:

Sep 1, 2000

Appl. No.:

09/653767

Inventors:

Scott T. Allan - Burlingame CA, US
Tiffany Pai - Emerald Hills CA, US
J. Gregory Stout - Sunnyvale CA, US
Xin Zhao - Cupertino CA, US

Assignee:

Symbol Technologies, Inc. - Holtsville NY

International Classification:

G06Q 99/00

US Classification:

705 1

Abstract:

An advertising service divides a consumer transaction at a POS location into multiple time frames. The service then determines an advertisement (ad) for display in one of the time frames and displays the ad in one of the time frames. One of the time frames spans one of the following activities: waiting for a consumer to begin a transaction, greeting a consumer, beginning a transaction, selecting a form of payment, swiping a card for a form of payment, entering a security code for the form of payment, identifying a product for purchase, displaying a total cost for products identified for purchase, signing for a purchase, thanking a consumer his purchase, surveying a consumer, promoting an event, applying for a credit card, informing a consumer, identifying a consumer, interacting with a consumer, and passing through an interstitial period. Determining the ad for display in one of the time frames includes transmitting information about the transaction to an ad-management service that then determines the ad for display based on the transmitted information. A response indicates the determined ad.

US Patent:

7734475, Jun 8, 2010

Filed:

Mar 6, 2008

Appl. No.:

12/043591

Inventors:

Scott T. Allan - Burlingame CA, US
Tiffany Pai - Emerald Hills CA, US
J. Gregory Stout - Sunnyvale CA, US
Xin Zhao - Cupertino CA, US

Assignee:

Symbol Technologies, Inc. - Holtsville NY

International Classification:

G06Q 99/00

US Classification:

705 11, 705 1465

Abstract:

An advertising service divides a consumer transaction at a POS location into multiple time frames. The service then determines an advertisement (ad) for display in one of the time frames and displays the ad in one of the time frames. One of the time frames spans one of the following activities: waiting for a consumer to begin a transaction, greeting a consumer, beginning a transaction, selecting a form of payment, swiping a card for a form of payment, entering a security code for the form of payment, identifying a product for purchase, displaying a total cost for products identified for purchase, signing for a purchase, thanking a consumer his purchase, surveying a consumer, promoting an event, applying for a credit card, informing a consumer, identifying a consumer, interacting with a consumer, and passing through an interstitial period. Determining the ad for display in one of the time frames includes transmitting information about the transaction to an ad-management service that then determines the ad for display based on the transmitted information. A response indicates the determined ad.

US Patent:

20220417497, Dec 29, 2022

Filed:

Jan 7, 2022

Appl. No.:

17/570603

Inventors:

- Palo Alto CA, US
Xin ZHAO - San Jose CA, US
Shan LIU - San Jose CA, US

Assignee:

Tencent America LLC - Palo Alto CA

International Classification:

H04N 19/105
H04N 19/132
H04N 19/159
H04N 19/176

Abstract:

Methods, apparatus, and computer readable storage medium for intra bi-prediction and multiple reference line intra prediction in video decoding. The method includes receiving, by a device, a coded video bitstream for a block. The method also includes determining, by the device, whether a single directional intra prediction or an intra bi-prediction applies to the block, based on mode information of the block, the mode information of the block comprising at least one of: a reference line index of the block, an intra prediction mode of the block, and a size of the block; in response to determining that the single directional intra prediction applies to the block, performing, by the device, the single directional intra prediction to the block; and in response to determining that the intra bi-prediction applies to the block, performing, by the device, the intra bi-prediction to the block.

US Patent:

20220377386, Nov 24, 2022

Filed:

Aug 2, 2022

Appl. No.:

17/879371

Inventors:

- Palo Alto CA, US
Xin ZHAO - Santa Clara CA, US
Yixin DU - Los Altos CA, US
Liang ZHAO - Sunnyvale CA, US
Shan LIU - San Jose CA, US

Assignee:

Tencent America LLC - Palo Alto CA

International Classification:

H04N 19/82
H04N 19/176
H04N 19/117
H04N 19/46
H04N 19/132
H04N 19/186

Abstract:

A method for video encoding includes determining a filter shape of a cross-component filter applied to a chroma coding block (CB), generating a first intermediate CB by applying a loop filter to the chroma CB, and generating a second intermediate CB by applying, to a corresponding luma CB, the cross-component filter applied to the chroma CB and having the determined filter shape. The method further includes determining a filtered chroma CB based on the first intermediate CB and the second intermediate CB by combining the loop filtered chroma CB with the cross-component filtered luma CB, and generating coded information of the chroma CB in a coded video bitstream. Determining the filter shape includes determining the filter shape of the cross-component filter based on the number of the filter coefficients and based on at least one of (i) the chroma subsampling format or (ii) the chroma sample type.

US Patent:

20220360818, Nov 10, 2022

Filed:

Jul 26, 2022

Appl. No.:

17/873761

Inventors:

- Palo Alto CA, US
Xin Zhao - Palo Alto CA, US
Shan Liu - Palo Alto CA, US

Assignee:

TENCENT AMERICA LLC - Palo Alto CA

International Classification:

H04N 19/593
H04N 19/176
H04N 19/186

Abstract:

A method, system, and non-transitory computer readable medium is provided for decoding video data. Video data comprising a chroma component having a first nominal angle and first delta angles and a luma component having a second nominal angle and second delta angles is received, wherein the first delta angles are dependent on the second delta angles. The first delta angle values corresponding to the first delta angles are parsed or derived based at least on second delta values corresponding to the second delta angles, wherein the first delta angle values are derived from one or more nominal angles associated with one or more sample positions corresponding to one or more luma blocks. A prediction mode associated with the chroma component based on a nominal mode of a corresponding luma block is entropy-coded. The video data is decoded based on the first delta angle values corresponding to the first delta angles.

US Patent:

20220353547, Nov 3, 2022

Filed:

Jan 11, 2022

Appl. No.:

17/573059

Inventors:

- Palo Alto CA, US
Xin ZHAO - San Jose CA, US
Shan LIU - San Jose CA, US

Assignee:

Tencent America LLC - Palo Alto CA

International Classification:

H04N 19/91
H04N 19/18
H04N 19/176

Abstract:

Methods, apparatus, and computer readable storage medium for implementation of entropy encoding of sign value of transform coefficient. The method includes receiving a first data block comprising a first transform coefficient from a coded video bitstream for the video data; and performing entropy decoding of a sign value of the first transform coefficient based on a context information, wherein the context information is derived based on a sign value of a second transform coefficient in a second data block in the video data, the second data block being co-located with the first data block, wherein co-located refers to two data blocks in different channels being located in a same spatial position.

US Patent:

20220353550, Nov 3, 2022

Filed:

Jul 15, 2022

Appl. No.:

17/865631

Inventors:

- Palo Alto CA, US
Xin Zhao - Palo Alto CA, US
Shan Liu - Palo Alto CA, US

Assignee:

Tencent America LLC - Palo Alto CA

International Classification:

H04N 19/96
H04N 19/186
H04N 19/70
H04N 19/119
H04N 19/176

Abstract:

A method, computer program, and computer system is provided for encoding or decoding video data. Video data including a chroma component and a luma component is received. A first coding tree structure associated with the luma component and a second coding tree structure associated with the chroma component are determined, wherein the first coding tree structure and the second coding tree structure share a same top level coding tree structure. The video data is decoded based on the first coding tree structure and the second coding tree structure.

US Patent:

20220345690, Oct 27, 2022

Filed:

Jan 7, 2022

Appl. No.:

17/571284

Inventors:

- Palo Alto CA, US
Xin ZHAO - San Jose CA, US
Madhu PERINGASSERY KRISHNAN - Mountain View CA, US
Shan LIU - San Jose CA, US

Assignee:

TENCENT AMERICA LLC - Palo Alto CA

International Classification:

H04N 19/105
H04N 19/12
H04N 19/159
H04N 19/176

Abstract:

This disclosure relates to a harmonized design among multiple reference line intra prediction, transform partitioning, and transform kernelsor processing video information. One example method is disclosed. The method includes retrieving a data block of a video frame, the data block having an adjacent reference line and one or more non-adjacent reference lines in the video frame; determining whether one of the one or more non-adjacent reference lines is to be used for intra prediction of the data block. When an adjacent reference line is used for the intra prediction of the data block, selecting a target transform kernel from a first set of transform kernels to transform the data block; and when a non-adjacent reference line is used for the intra prediction of the data block, selecting the target transform kernel from a second set of transform kernels to transform the data block.