Seung Hee Hwang

6463092, Oct 8, 2002

Sep 9, 1999

09/393235

Gyudong Kim - Sunnyvale CA
Min-Kyu Kim - Cupertino CA
Seung Ho Hwang - Palo Alto CA

Silicon Image, Inc. - Sunnyvale CA

H04B 138

375219, 375220, 375244, 375257, 375293, 375354, 375355, 375360, 370284, 370301

The system preferably includes a unique transmitter that sends both clock and data signals over the same transmission line. The receiver uses the same transmission line to send data signals back to the transmitter. The transmitter comprises a clock generator, a decoder and a line interface. The clock generator produces a clock signal that includes a variable position falling edge. The falling edge position is decoded by the receiver to extract data from the clock signal. The receiver comprises a clock re-generator, a data decoder and a return channel encoder. The clock re-generator monitors the transmission line, receives signals, filters them and generates a clock signal at the receiver from the signal on the transmission line. The return channel encoder generates signals and asserts them on the transmission line. The signal is asserted or superimposed over the clock data signal provided by the transmitter.

6625560, Sep 23, 2003

Jul 13, 2001

09/904783

Ziaus S. Molla - Santa Clara CA
Victor DaCosta - Santa Cruz CA
Seung Ho Hwang - Palo Alto CA
Baegin Sung - Sunnyvale CA

Silicon Image, Inc. - Sunnyvale CA

G06F 1100

702120, 702125, 714731, 714814

A method of testing a circuit having an interface which includes data and clock information where phase jitter is introduced into the clock that produces the clock information. The clock is cycled by increasing the period of the clock for a predetermined number of clock cycles so as to introduce an increasing phase shift advance in the clock. The clock is also cycled by decreasing the period of the clock for a predetermined number of clock cycles so as to introduce an increasing phase shift delay in the clock. The circuit under test is caused to sample the data using a clock derived from the clock information. The sampled data is then compared with reference data to determine the error rate.

6870930, Mar 22, 2005

May 26, 2000

09/579811

Gyudong Kim - Sunnyvale CA, US
Victor M. Da Costa - Santa Cruz CA, US
Bruce Kim - Cupertino CA, US
David D. Lee - Palo Alto CA, US
Russel A. Martin - Menlo Park CA, US
Seung Ho Hwang - Palo Alto CA, US

Silicon Image, Inc. - Sunnyvale CA

H04L009/00
H04K001/06
H04N007/167

380 42, 380 44, 380 37, 380200, 380210

The present invention is directed to systems and methods for protecting digital content during transmission. One version of the invention provides a method for encryption in a high-speed digital video transmission system that includes the steps of: a) performing transition controlled encoding of a first sequence of n bit data words into encoded n+1 bit data characters where the n is a positive integer, b) performing XOR masking of the encoded n+1 bit data characters with an XOR mask to produce masked n+1 bit data characters; c) DC balancing the masked n+1 bit data characters to produce DC balanced, masked n+2 bit data characters; d) scrambling the DC balanced, masked n+2 bit data characters using a scrambling formula to produce encrypted n+2 bit data characters; e) encoding control data into encoded n+2 bit control characters, f) generating a serial data stream in response to the encrypted data characters and encoded control characters, and g) transmitting the serial data stream over a communication link. Subsequent to step (e) and prior to step (f), the method can further include the step of encrypting the encoded n+2 bit control characters, such that the generating step generates a serial data stream in response to the encrypted data characters and the encrypted control characters.

6914637, Jul 5, 2005

Jul 10, 2002

10/192296

Paul Daniel Wolf - San Carlos CA, US
John D. Banks - Cupertino CA, US
Stephen J. Keating - Sunnyvale CA, US
Duane Siemens - Mountain View CA, US
Eric Lee - San Jose CA, US
Albert M. Scalise - San Jose CA, US
Gijung Ahn - San Jose CA, US
Seung Ho Hwang - Palo Alto CA, US
Keewook Jung - Santa Clara CA, US
James D. Lyle - Santa Clara CA, US
Michael Anthony Schumacher - San Jose CA, US
Vladimir Grekhov - Los Altos CA, US

Silicon Image, Inc. - Sunnyvale CA

H04N007/52

348473, 348476

A communication system including a transmitter, a receiver, and a serial link, in which encoded data (e. g. , video, audio, and optionally also other auxiliary data) are transmitted from the transmitter to the receiver. The serial link can but need not be a TMDS or TMDS-like link. In typical embodiments, packets of encoded audio data are transmitted over each of one or more channels of the link during data islands between bursts of encoded video data. Other aspects of the invention are transmitters for use in encoding data for transmission over a serial link, receivers for receiving such data, and methods for sending encoded data over a serial link.

7088398, Aug 8, 2006

Jun 14, 2002

10/171860

Paul Daniel Wolf - San Carlos CA, US
Adrian Sfarti - Cupertino CA, US
John D. Banks - Cupertino CA, US
Stephen J. Keating - Sunnyvale CA, US
Duane Siemens - Mountain View CA, US
Eric Lee - San Jose CA, US
Albert M. Scalise - San Jose CA, US
Gijung Ahn - Sunnyvale CA, US
Seung Ho Hwang - Palo Alto CA, US
Keewook Jung - Santa Clara CA, US

Silicon Image, Inc. - Sunnyvale CA

H04N 7/08
H04N 7/12
H04N 7/52

3484231, 348473, 348478, 348465, 348515, 3484254, 37524028

A communication system including a transmitter, a receiver, and a serial link, in which encoded data (e. g. , video, audio, and optionally also other auxiliary data) are transmitted from the transmitter to the receiver. The serial link can but need not be a TMDS or TMDS-like link. In typical embodiments, packets of encoded audio data are transmitted over each of one or more channels of the link during data islands between bursts of encoded video data, a pixel clock is transmitted over the link, and the receiver regenerates a clock for the audio data using time code data in the packets and the pixel clock. Other aspects of the invention are transmitters for transmitting encoded data and a pixel clock over a serial link, receivers for receiving such data and pixel clock and performing audio clock regeneration, and methods for transmitting encoded data and a pixel clock over a serial link and performing clock regeneration using the transmitted data and pixel clock.

7158593, Jan 2, 2007

Mar 15, 2002

10/099533

Gyudong Kim - Sunnyvale CA, US
Ook Kim - Palo Alto CA, US
Min-Kyu Kim - Cupertino CA, US
Bruce Kim - Los Altos CA, US
Seung Ho Hwang - Palo Alto CA, US

Silicon Image, Inc. - Sunnyvale CA

H04L 7/00

375354

A method of transmitting data in a system including at least one data channel and a separate clock channel is disclosed. The method involves combining a clock signal to be transmitted on the clock channel with a data signal to generate a combined clock and data signal. In one embodiment, the data signal has been generated from data words using an encoding scheme that shifts an energy spectrum of the data signal away from an energy spectrum of the clock signal. In another embodiment, the clock signal has a plurality of pulses each having a front edge and a back edge, and the data signal is modulated onto the clock signal by moving at least one edge (i. e. front or back or both) of the plurality of pulses, thereby to create a combined clock and data signal.

7236553, Jun 26, 2007

Jan 23, 2004

10/763905

Hoon Choi - Sunnyvale CA, US
Gyudong Kim - Sunnyvale CA, US
Daeyun Shim - Cupertino CA, US
Bruce Kim - Los Altos CA, US
Seung Ho Hwang - Palo Alto CA, US

Silicon Image, Inc. - Sunnyvale CA

H04L 7/00

375355, 375325, 375371, 375375

A data sampling method and circuit employing an oversampling clock to oversample a data signal, a phase tracker for use with or in a data sampling circuit, and a method for identifying a sequence of best sampling positions for sampling a data signal from signal samples generated using an oversampling clock. In some embodiments, data indicative of the phase of at least one of the oversampling clock's sampling positions relative to the center of the data eye are low-pass filtered in a manner determined by the data signal's bit rate. In other embodiments, the number of dead cycles of the phase tracker decision loop is reduced by generating possible solutions in parallel and moving the feedback point so as to occur as late as practical, or the phase tracker ignores a sample set when updating its determination of the best sampling position when the sample set indicates that the data signal has less than a predetermined number of transitions during a corresponding tracking period.

7257163, Aug 14, 2007

Mar 12, 2002

10/095422

Seung Ho Hwang - Palo Alto CA, US
Jano Banks - Cupertino CA, US
Paul Daniel Wolf - San Carlos CA, US
Eric Lee - San Jose CA, US
William Sheet - Fremont CA, US
Albert M. Scalise - San Jose CA, US

Silicon Image, Inc. - Sunnyvale CA

H04B 14/04

375242, 375346, 348473, 348476

A system in which encoded data (e. g. , encoded video and auxiliary data) are transmitted over a serial link. Other aspects of the invention are transmitters for use in encoding data for transmission over a serial link, receivers for receiving such data, and methods for sending encoded data over a serial link. Source data to be transmitted are encoded using a subset of a full set of code words. The subset consists of preferred code words. Disjoint clusters of code words in the full set are predetermined. Each cluster includes one or more of the preferred words, and optionally also at least one additional code word that is similar to a preferred word of the cluster in the sense that it is likely to be generated as a result of probable bit errors in transmission, or transmission and decoding, of such preferred word. Each preferred word of a cluster is indicative of a single source data value. Each received code word in a cluster is mapped to the source data value determined by each preferred word of the cluster.