Yves C Faroudja

US Patent:

7310370, Dec 18, 2007

Filed:

Aug 27, 2002

Appl. No.:

10/487764

Inventors:

Yves C. Faroudja - Los Altos Hills CA, US

Assignee:

The Yves Faroudja Project, Inc. - Los Altos CA

International Classification:

H04B 1/66
H04N 7/12
H04N 11/02

US Classification:

3752401, 37524011

Abstract:

Multi-layered motion or still video compression includes, in an encoder or encoding function aspect of the invention, separating the video signal into low-frequency and high-frequency components, processing the low-frequency components of the video signal to generate synthetic high-frequency components, the low-frequency components or a data reduced version of the low-frequency components comprising a main or base layer, and generating the difference between the synthetic high-frequency components and the actual high-frequency components, the difference comprising an error or enhancement layer signal. A decoder or decoding function aspect of the invention processes the main layer to generate synthetic high-frequency components and combines the synthetic high-frequency components, main layer and enhancement layer to provide a decoded output signal similar to the video signal applied to the encoder.

US Patent:

8184203, May 22, 2012

Filed:

Jul 7, 2009

Appl. No.:

12/499000

Inventors:

Yves Faroudja - Mountain View CA, US

Assignee:

The Yves Faroudja Project - Mountain View CA

International Classification:

H04N 5/21
H04N 5/00
G06K 9/40

US Classification:

348625, 348606, 348607, 382254, 382266, 382275

Abstract:

A transition enhancement method and system for use with television or computer displays submits single transitions occurring in an input signal to a first transition enhancement process; and submits double transitions of opposite signs occurring in the input signal to a second transition enhancement process that is different from the first transition enhancement process.

US Patent:

8288966, Oct 16, 2012

Filed:

Mar 9, 2009

Appl. No.:

12/400668

Inventors:

David L. Medin - Los Altos CA, US
Takatoshi Ishii - Sunnyvale CA, US
Yves Faroudja - Los Altos Hills CA, US

Assignee:

Spatial Photonics, Inc. - Sunnyvale CA

International Classification:

H05B 41/36

US Classification:

315360, 315209 R, 315291

Abstract:

A colored light generating element can be configured to, while in an active state, pulse between an off state and an on state. A substantially constant offset voltage or current can be applied to the colored light generating element during a predetermined time interval when the light generating element is in the off state so as to cause the colored light generating element to emit, during the off state, some amount of light greater than a minimum amount of light that the light generating element is capable of generating while part of an active system. In some implementations, two or more offset voltages or currents can be applied. Implementations may include a preprocessor configured to receive an image signal and optimize color saturation of the image signal, such as by limiting and non-linearly increasing color saturation. Implementations may include multiple colored light generating elements.

US Patent:

8542319, Sep 24, 2013

Filed:

Mar 6, 2013

Appl. No.:

13/787415

Inventors:

Yves Faroudja - Los Altos CA, US

Assignee:

Faroudja Enterprises, Inc. - Los Altos CA

International Classification:

H04N 7/01

US Classification:

348446, 348452, 348459

Abstract:

Methods and systems for pre-processing a progressive scan signal comprise: receiving by a processor thea progressive scan signal; detecting an amount of vertical motion present in the progressive scan signal; low pass filtering the progressive scan signal in a vertical domain as a function of the amount of vertical motion present to generate a pre-filtered progressive signal; and interlacing the pre-filtered progressive signal to generate an interlaced signal having a minimal amount of artifacts.

US Patent:

20040240543, Dec 2, 2004

Filed:

Feb 27, 2004

Appl. No.:

10/487723

Inventors:

Yves Faroudja - Los Altos Hills CA, US

International Classification:

H04N007/12

US Classification:

375/240010, 375/240250

Abstract:

In one embodiment, a low bandwidth encoder extracts edge transitions to provide a video signal mainly representing image contours. The contours' amplitude and width may be standardized. Significant points along the contours are extracted as nodes to provide a first encoder output layer. A low-resolution, essentially contour-free video signal representing the image provides a second encoder output layer. For a moving image, the frame rate of the layers may be reduced. In one embodiment, a decoder receives the first and second layers and derives a video signal representing contours by space-domain interpolating the nodes signal. The resulting contours video signal and low-resolution, essentially contour-free video signal are multiplicatively or pseudo-multiplicatively combined to provide an output approximating the original input signal. For a moving image, morphing reference points derived from frames of the nodes video signal are used to provide time-domain interpolation before or after multiplicative or pseudo-multiplicative combining.

US Patent:

45048533, Mar 12, 1985

Filed:

Feb 16, 1982

Appl. No.:

6/349017

Inventors:

Yves C. Faroudja - Los Altos Hills CA

International Classification:

H04N 521
H04N 9535

US Classification:

358 37

Abstract:

A color television processing system enhances aperiodic transitions occurring in a quadrature modulated subcarrier by deriving a control signal from simultaneously occurring aperiodic transitions in the baseband of the carrier, such as luminance (or from chrominance in the absense of an effective luminance transition) without demodulation of the chroma subcarrier. The system includes an input, a delay match for delaying a first component of the modulated subcarrier signal by a predetermined amount, a one-half period delay for delaying a second component of the modulated subcarrier signal by half the period thereof, and a first adder for combining in equal amounts a third component of the modulated subcarrier with the delayed second component thereof to provide a transition envelope. A control generator receives the baseband signal and chroma and derives a control signal from transitions occurring in the baseband or in chroma in the absence of baseband transitions. A multiplier multiplies the transition envelope signal by the control signal to provide an enhancement product.

US Patent:

54283981, Jun 27, 1995

Filed:

Apr 10, 1992

Appl. No.:

7/866825

Inventors:

Yves C. Faroudja - Los Altos Hills CA

International Classification:

H04N 701

US Classification:

348452

Abstract:

Television signal processing apparatus act on a received standard-bandwidth television signal to produce a high-definition-like video image relatively free of artifacts. A motion-adaptive line doubler operates in combination with a non-linear enhancer. In a practical implementation, the combination further includes a digital decoder. When the output of the decoder is applied to the line doubler, an interface provides a transition from the time base of the decoder to the time base of the line doubler. The non-linear enhancer includes bandwidth expanding enhancement for horizontal and/or vertical picture transitions.

US Patent:

49125575, Mar 27, 1990

Filed:

May 16, 1988

Appl. No.:

7/194200

Inventors:

Yves C. Faroudja - Los Altos CA

International Classification:

H04N 521

US Classification:

358167

Abstract:

A method for controlling reduction of a ghost image present in a main path baseband television video signal includes the steps of deriving a main path reference pulse and ghost image of the pulse from a successive series of pulses and ghost images of the pulses present during the vertical blanking interval of a present field of the video signal, the derived ghost image having an amplitude less than the amplitude of the derived main path reference pulse; replicating the derived reference pulse and ghost image at a predetermined repetition rate substantially throughout the useful picture area of the present field interval; generating a signal used for correlation which is delayed in time from the occurrence of the beginning of the present video field; correlating the replicated ghost image with the signal used for correlation to ascertain a location of coincidence in order to provide a correction pulse indicating the delay period and amplitude of the ghost image of the pulse; generating at least two control signals respectively related to the correction pulse: establishing a ghost reduction network structure for the present field in response to the two said control signals and maintaining the established structure throughout the present field and until the ghost reduction network structure is reestablished by the foregoing steps during subsequently occurring fields; and, passing the main path baseband television video signal through the network during the present field and combining a function related to determined amplitude and delay period of the ghost image with the baseband television video signal in order to reduce the amplitude of the ghost image present in the video signal.