Chung Chia Chang

US Patent:

6409242, Jun 25, 2002

Filed:

Nov 21, 2000

Appl. No.:

09/717928

Inventors:

Chung L. Chang - Diamond Bar CA 91765

International Classification:

B60N 312

US Classification:

296 377, 296 241

Abstract:

A vehicle roof mounted video display is disclosed. The display is rotatable 180Â about a first axis, between a stored position within a housing and a second position in which the display lies flat against the vehicle roof. The display is also rotatable at least 60Â, and preferably 90Â, about a second axis that intersects and is substantially perpendicular to the first axis. Each axis includes self-tensioning hinges to hold the display in any position. The display self aligns as it reaches either of the first and second positions so that the display is substantially parallel to the roof. When the display is in the storage position, the display screen faces, and is safely enclosed by, the housing. The invention also includes a number of built-in features to provide passengers with a wide range of entertainment options.

US Patent:

D467562, Dec 24, 2002

Filed:

Nov 14, 2001

Appl. No.:

29/150564

Inventors:

Chung L. Chang - Diamond Bar CA 91765

International Classification:

1403

US Classification:

D14132

US Patent:

6637002, Oct 21, 2003

Filed:

Oct 21, 1998

Appl. No.:

09/176658

Inventors:

Shih Mo - Milpitas CA
Chung Chang - San Jose CA

Assignee:

Maxtor Corporation - Longmont CO

International Classification:

H03M 1300

US Classification:

714781, 708507

Abstract:

A decoder for decoding block error correction codes is described. The decoder includes a first search circuit to find roots of an error location polynomial corresponding to an error location and a second search circuit to find roots of an error location polynomial corresponding to an error location. A multiplexer is fed by the first search circuit and the second search circuit to produce an error location from the error location polynomial.

US Patent:

6820095, Nov 16, 2004

Filed:

Apr 16, 2001

Appl. No.:

09/834658

Inventors:

Sofia Yeung - Union City CA
Chung Chang - San Jose CA

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 1730

US Classification:

707200, 707205, 711173

Abstract:

An object, such as a relational database table, is partitioned into a plurality of subsets. Selected subsets, e. g. partitions, of the object are exported into a dump file, identifying each exported subset of data by writing a marker in the dump file. Selected subsets are imported from the dump file, by determining whether the marker in the dump file corresponds to the selected subsets, then conditionally importing the data associated with the marker. Objects are repartitioned by exporting the some of the subsets, reconfiguring the object, and importing the exported subsets back into the object.

US Patent:

6871356, Mar 22, 2005

Filed:

Feb 7, 2003

Appl. No.:

10/361897

Inventors:

Chung L. Chang - Diamond Bar CA, US

Assignee:

Johnson Safety, Inc. - San Bernardino CA

International Classification:

H04N007/18
H04N005/64
H04B001/00

US Classification:

725 75, 348837, 381 86

Abstract:

A mobile video system includes a first video source, a second video source, a first video monitor, a second video monitor, an audio signal receiver, and a wireless transmitter. One of the first video source and the second video source generates a first audiovisual signal. One of the first video monitor and the second video monitor receives a video portion of at least one of the first audiovisual signal and the second audiovisual signal. The wireless transmitter transmits an audio portion of one of the first audiovisual signal or the second audiovisual signal to the audio signal receiver. A video portion of the first audiovisual signal or the second audiovisual signal is displayed on the first video monitor, on the second video monitor, or on both the first video monitor and the second video monitor.

US Patent:

7020282, Mar 28, 2006

Filed:

Sep 5, 2000

Appl. No.:

09/655230

Inventors:

Chung Nan Chang - Los Altos CA, US

International Classification:

H04L 9/00
H04K 1/00

US Classification:

380 44, 380 28, 380 30, 380285, 713171

Abstract:

One aspect of the present invention establishes a session key by a receiving unit R transmitting a plurality of quantities for storage in a public repository. A sending unit S:Another aspect provides a digital signature. Before transmitting a signed message, the unit S stores a plurality of quantities in the public repository. A unit R, that receives the message and the digital signature, verifies their authenticity by:.

US Patent:

7036879, May 2, 2006

Filed:

Aug 14, 2002

Appl. No.:

10/219987

Inventors:

Chung L. Chang - Diamond Bar CA, US

Assignee:

Johnson Safety, Inc. - San Bernardino CA

International Classification:

A47C 7/62
H04N 5/64

US Classification:

2972173, 348837

Abstract:

A monitor adapted for mounting in an automobile headrest is provided. A screen structure of the monitor is pivotable about an upper edge thereof, such that the monitor occupies little volume within the headrest. A viewing angle of the screen structure is independently adjustable by a viewer, such that the viewer can continuously select the optimum viewing angle with changing conditions inside the automobile. The screen structure automatically retracts into a housing when struck. Thus, the monitor poses little risk of injury to passengers.

US Patent:

7044546, May 16, 2006

Filed:

Jan 20, 2004

Appl. No.:

10/762630

Inventors:

Chung L. Chang - Diamond Bar CA, US

Assignee:

Johnson Safety, Inc. - San Bernardino CA

International Classification:

A47C 7/62
H04N 5/64

US Classification:

2972173, 348837

Abstract:

A monitor adapted for mounting in an automobile headrest is provided. A screen structure of the monitor is pivotable about an upper edge thereof, such that the monitor occupies little volume within the headrest. A viewing angle of the screen structure is independently adjustable by a viewer, such that the viewer can continuously select the optimum viewing angle with changing conditions inside the automobile. The screen structure automatically retracts into a housing when struck. Thus, the monitor poses little risk of injury to passengers. The housing of the monitor is attachable to the headrest with screws, which provides a very sturdy connection and reduces the chances of the housing becoming detached from the headrest during a vehicle collision. The hinged connection between the screen structure and the housing is preferably constructed of interconnected components made from sturdy materials, such as metals. Hinge components are optionally secured with metal fastening members and fastening apertures made of metal and strong plastics.