Walter S Lin

US Patent:

7250983, Jul 31, 2007

Filed:

Aug 4, 2004

Appl. No.:

10/912647

Inventors:

Walter C. Lin - Santa Clara CA, US
Jiande Jiang - San Jose CA, US

Assignee:

Trident Technologies, Inc. - Sunnyvale CA

International Classification:

H04N 9/74

US Classification:

348584

Abstract:

The present invention provides a system and method for overlaying video from different video sources on a display device. The sources may include a primary video source that provides first image data in the form of a first video signal, and an overlay video source that provides second image data in the form of a second video signal and a fast blank signal. The system encodes the fast blank signal into the second video signal to form encoded image data. The fast blank signal can occupy one bit of the encoded image data. The system stores the first image data and the encoded image data in a frame buffer. A controller reads the first image data and the encoded image data from the frame buffer. The controller processes and decodes encoded image data, extracting the fast blank signal. The controller then uses the extracted fast blank signal to combine the second image data and the first image data, effective to overlay an image from the overly video source onto an image from the primary video source.

US Patent:

7486283, Feb 3, 2009

Filed:

Nov 18, 1999

Appl. No.:

09/442868

Inventors:

Walter C. Lin - San Jose CA, US

Assignee:

Trident Microsystems (Far East) Ltd. - Grand Cayman

International Classification:

G09G 5/00

US Classification:

345204, 345100

Abstract:

Method and apparatus by which digital data is communicated from a computer system to a display device. An analog video signal received from a computer system includes a predetermined data pattern. The analog video signal is sampled to detect the predetermined data pattern. The digital data is then recovered from the detected predetermined data pattern. The predetermined data pattern may occur a predetermined time interval after a horizontal sync pulse or may occur outside of a blanking interval. The display device may respond to the predetermined data pattern by commencing a set-up process, such as, adjusting a sampling rate for sampling the analog video signal; adjusting a sampling phase; or adjusting an orientation of a display image for the display device. Adjusting an orientation may comprise adjusting a sampling start time relative to a horizontal or vertical sync pulse. The predetermined data pattern may be representative of a parameter of the analog video signal, such as, resolution or frequency.

US Patent:

7554519, Jun 30, 2009

Filed:

Aug 4, 2004

Appl. No.:

10/912646

Inventors:

Walter C. Lin - Santa Clara CA, US
Jiande Jiang - San Jose CA, US

Assignee:

Trident Microsystems (Far East) Ltd. - Taipei

International Classification:

G09G 3/36

US Classification:

345 99, 345 87

Abstract:

The present invention provides a system and method for adjusting clock phase in a digital display. The display may include a target analog-to-digital converter that generates a first digital signal based on an analog input signal and a first clock signal (CLK). The system includes a first clock phase adjustment circuit , which provides CLK to the target analog-to-digital converter. A second analog-to-digital converter receives at least a portion of the analog input signal and a second adjusted clock signal (CLK), and generates a second digital signal based on these inputs. A second clock phase adjustment circuit is communicatively coupled to the second analog-to-digital converter , and transmits CLK to the second analog-to-digital converter. A controller receives the second digital signal from the second analog-to-digital converter and uses the signal to determine a preferred phase of CLK. The controller then causes the first clock phase adjustment circuit to adjust the phase of CLK based on the preferred phase.

US Patent:

8519928, Aug 27, 2013

Filed:

Jun 22, 2006

Appl. No.:

11/472588

Inventors:

Jiande Jiang - San Jose CA, US
Walter C. Lin - San Jose CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

G09G 3/36
H04N 5/16

US Classification:

345 89, 345545, 348697

Abstract:

A method and system for frame insertion in a digital display system is provided. The method is adapted for use with a liquid crystal display (LCD) type display and is effective to substantially reduce motion blur. The LCD display receives a sequence of digitized input frames at a first frequency. The method generates a sequence of output frames that include the digitized input frames interspersed with a plurality of modified frames. Each of the modified frames is substantially similar to a preceding digitized input frame, but has a reduced luminance. The modified frames may be generated by multiplying a preceding digitized input frame by a reduced luminance factor. The reduced luminance factor may be determined as a fixed value or as a function of an average pixel level of a preceding frame.

US Patent:

8587722, Nov 19, 2013

Filed:

Oct 8, 2004

Appl. No.:

10/961863

Inventors:

Jiande Jiang - San Jose CA, US
Kenny Tseng - Pengyuan, TW
Walter C. Lin - Santa Clara CA, US

Assignee:

Entropic Communications, Inc. - San Diego CA

International Classification:

H03L 7/00

US Classification:

348537, 348521, 348525

Abstract:

The present invention provides a system and method for automatically controlling the phase of the clock signal for sampling an HDTV signal, which implements a new and improved method for phase detection. The system and method utilize the standard format of an HDTV signal to consistently ensure accurate phase detection. Particularly, the system and method detect the target phase for the sampling clock using a tri-level sync pattern that exists at the beginning of each display line. This tri-level sync pattern or “sync pulse” is well suited for phase detection since it includes several static areas separated by substantial transitions. Furthermore, by using the sync pulse of the HDTV signal, the system and method provide consistent and accurate results, since the sync pulse will not change regardless of the whether the video data is static or in motion.

US Patent:

20030081005, May 1, 2003

Filed:

Nov 18, 1999

Appl. No.:

09/443054

Inventors:

WALTER C. LIN - SAN JOSE CA, US
JUDY K. LIN - SAN JOSE CA, US

International Classification:

G09G005/00

US Classification:

345/781000

Abstract:

A method and apparatus provide a user interface for control of a display device. A video signal is provided to a display device and a graphic image is displayed by the display device. The video signal may be provided to the display device by a host computer system coupled to the display device. Input to the host computer system is received by a user manipulating the graphic image via an input device. The host computer system responds to the input by communicating a command to the display device, the command for adjusting a parameter of the display device. The parameter may be selected from a group consisting of: brightness, contrast, horizontal orientation, horizontal size, vertical orientation, vertical size, tilt, pincushion, and color tint for the display. The command may be communicated via a data sequence sent to the display device by the host computer system. The data sequence may be encoded onto the video signal sent to the display device by the host computer system. The command may be communicated via a digital protocol which provides for bi-directional communication. The input device may be one or more of: a cursor control device coupled to the computer system; and a keyboard coupled to the computer system. The graphic image may include one or more of: a task window which provides a graphic menu; a graphic representation of the parameter, the graphic representation changing in response to said input by the user; a sliding scale; and a numeric value.