Jiangang J Ding

US Patent:

6754082, Jun 22, 2004

Filed:

Nov 7, 2002

Appl. No.:

10/290013

Inventors:

Jiangang Ding - San Jose CA
Ji Zhang - San Jose CA
Hain Ching Liu - Fremont CA

Assignee:

Exavio, Inc. - Santa Clara CA

International Classification:

G06F 116

US Classification:

361727, 361685, 361724, 3122231, 3122232

Abstract:

A data storage system ( ) includes multiple storage devices arranged in an array. A column in the array includes storage devices ( ) mounted on a tray ( ). The storage devices ( ) and the tray ( ) form an air channel ( ) for efficient heat dissipation. The data storage system ( ) may include multiple columns inserted in multiple slots of a chassis ( ), thereby forming a memory board.

US Patent:

7218842, May 15, 2007

Filed:

Jul 25, 2001

Appl. No.:

09/915697

Inventors:

Ji Zhang - San Jose CA, US
Jiangang Ding - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04N 7/26

US Classification:

386109, 386112

Abstract:

The present invention provides efficient methods for performing motion compensation. The methods are particularly useful during motion compensation based decoding and recoding. In one aspect, motion compensation in accordance with the present invention improves on-chip memory usage. This is done by creating and storing a reference window in the on-chip memory. The reference window is constructed such that the reference frame portions required for motion compensation of a current frame are contained within the reference window and in the on-chip memory with a high frequency. In another aspect, selective methods are provided to recode compressed video data. The methods selectively apply re-quantization and motion compensation to the residual error between frames of the bitstream based on the amount of motion in the video data.

US Patent:

7447836, Nov 4, 2008

Filed:

Feb 14, 2006

Appl. No.:

11/353370

Inventors:

Ji Zhang - Monte Sereno CA, US
Jiangang Ding - San Jose CA, US

Assignee:

Software Site Applications, Limited Liability Company - Wilmington DE

International Classification:

G06F 12/00

US Classification:

711113

Abstract:

The present invention provides a disk drive storage defragmentation system, comprising providing a cache buffer system coupled to a host system, coupling a disk drive storage system to the cache buffer system, performing a defragmantation process on the disk drive storage system utilizing the cache buffer system and servicing a data access request by the host system from the cache buffer system.

US Patent:

7643480, Jan 5, 2010

Filed:

Jan 21, 2005

Appl. No.:

11/041079

Inventors:

Ji Zhang - Monte Sereno CA, US
Jiangang Ding - San Jose CA, US

International Classification:

H04L 12/56

US Classification:

370389, 370228, 709239

Abstract:

A data transport system for transporting data between a server () and a client receiver () over a network () includes a receiving proxy cache () coupled to a client receiver () via a reliable connection (), such as a cable connection. The majority of data is transported from the server () to the receiving proxy cache () over an efficient data transmission channel (). The receiving proxy cache () verifies the status of the data transmitted over the efficient channel (). If there is an error in the data transmission, a portion of the data associated with the error is retransmitted from the server () to the receiving proxy cache () over a reliable data transmission channel (). The complete data at the receiving proxy cache () is delivered to a client receiver () over a reliable connection ().

US Patent:

7908631, Mar 15, 2011

Filed:

Mar 20, 2003

Appl. No.:

10/393707

Inventors:

Ji Zhang - Monte Sereno CA, US
Jiangang Ding - San Jose CA, US

Assignee:

Software Site Applications, Limited Liability Company - Wilmington DE

International Classification:

H04N 7/173

US Classification:

725105, 370389, 3703953, 37039532, 348734

Abstract:

Systems and methods for deploying two-way data communication over a one-way infrastructure are disclosed. An end user enters a control command into an input device that is capable of sending data containing the control command over a network to a content service provider. The content service provider adjusts the end user's output stream in accordance with the end user's control command. The adjusted output stream is distributed to the output display device. Further features are disclosed such as providing content descriptive metadata to the input device and/or the output display device.

US Patent:

8015352, Sep 6, 2011

Filed:

Sep 24, 2008

Appl. No.:

12/237341

Inventors:

Ji Zhang - Monte Sereno CA, US
Jiangang Ding - San Jose CA, US

Assignee:

Software Site Applications, Limited Liability Company - Wilmington DE

International Classification:

G06F 12/00

US Classification:

711113

Abstract:

The present invention provides a disk drive storage defragmentation system, comprising providing a cache buffer system coupled to a host system, coupling a disk drive storage system to the cache buffer system, performing a defragmentation process on the disk drive storage system utilizing the cache buffer system and servicing a data access request by the host system from the cache buffer system.

US Patent:

20040172642, Sep 2, 2004

Filed:

Mar 3, 2004

Appl. No.:

10/792223

Inventors:

Jiangang Ding - San Jose CA, US
Ji Zhang - San Jose CA, US
Hain Ching Liu - Fremont CA, US

International Classification:

G11B033/14
G06F012/00
G06F012/14
G06F012/16
G06F013/00
G06F013/28

US Classification:

720/649000, 360/097020

Abstract:

A data storage system () includes multiple storage devices arranged in an array. A column in the array includes storage devices () mounted on a tray (). The storage devices () and the tray () form an air channel () for efficient heat dissipation. The data storage system () may include multiple columns inserted in multiple slots of a chassis (), thereby forming a memory board.

US Patent:

20070011401, Jan 11, 2007

Filed:

Jul 6, 2005

Appl. No.:

11/175876

Inventors:

Ji Zhang - Monte Sereno CA, US
JianGang Ding - San Jose CA, US

Assignee:

Exavio, Inc. - Santa Clara CA

International Classification:

G06F 12/16

US Classification:

711114000

Abstract:

Apparatus and methods for efficiently operating on RAID systems. A fast access buffer comprising an off-disk fast access memory module supports RAID operations such as recovery or reconfiguration operations, thereby minimizing or reducing the need for on-disk destructive zones and/or reducing disk drive I/O activities. In some cases the fast access memory module to serves as a read/write cache, reducing the need for frequent disk accesses of a small number of data blocks. Fast off-disk memory such as RAM enables rapid operation on in-buffer data blocks. Access to the material stored in the RAID devices may be enabled, partially enabled or disabled during RAID operations involving the fast access memory module and some data access operations may be synchronized with RAID operations. In some cases, data may be served from the fast access memory module, thereby providing rapid access to material stored in a RAID device during RAID operations.