Patrick K Pai

US Patent:

7783275, Aug 24, 2010

Filed:

Oct 13, 2006

Appl. No.:

11/580228

Inventors:

Myles Wakayama - Laguna Niguel CA, US
Dana Vincent Laub - Irvine CA, US
Frank Carr - Newport Beach CA, US
Afshin Mellati - Aliso Viejo CA, US
David S. P. Ho - Singapore, SG
Chun-Ying Chen - Irvine CA, US
James Y. C. Chang - Irvine CA, US
Lawrence M. Burns - Laguna Hills CA, US
Young Joon Shin - Irvine CA, US
Patrick Pai - Honolulu HI, US
Iconomos A. Koullias - Reading PA, US
Ron Lipka - Sinking Spring PA, US
Luke Thomas Steigerwald - Sinking Spring PA, US
Alexandre Kral - Laguna Niguel CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 1/28

US Classification:

455333, 455141, 455146, 455147, 4552361, 4552521, 375316, 375345

Abstract:

A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel directly to baseband for further processing. The integrated tuner includes on-chip local oscillator generation, tunable baseband filters, and DC Offset cancellation. The integrated tuner can be implemented in a completely differential I/Q configuration for improved electrical performance. The entire direct conversion satellite tuner can be fabricated on a single semiconductor substrate using standard CMOS processing, with minimal off-chip components. The tuner configuration described herein is not limited to processing TV signals, and can be utilized to down-convert other RF signals to an IF frequency or baseband.

US Patent:

20040028149, Feb 12, 2004

Filed:

Apr 11, 2003

Appl. No.:

10/411984

Inventors:

Stephen Krafft - Los Angeles CA, US
Patrick Pai - Honolulu HI, US
Jasmine Cheng - Irvine CA, US
Nicholas Nguyen - Lake Forest CA, US

International Classification:

H03K007/08

US Classification:

375/316000

Abstract:

Programmable integrated Digital Satellite Equipment Control (DiSEqC) transceiver. The DiSEqC functionality is integrated onto a semiconductor device. Rather than perform the DiSEqC protocol in software, the DiSEqC protocol is implemented in hardware thereby providing more reliable demodulation and improved robustness. The device's functionality may employ much more reliable communication schemes that are enabled by the hardware/integrated approach of implementing the DiSEqC protocol. The integrated approach allows extensive programmability of the various operational parameters thereby greatly improving the ease of future backward compatibility with legacy devices; devices employing this integrated DiSEqC functionality may be easily updated to conform to future enhancements of the DiSEqC protocol. Some of the now-improved features enabled by the integrated/monolithic approach of DiSEqC include programmable tone amplitude, programmable PWK duty cycle, programmable length of messages, programmable time between messages (before and after), programmable voltage thresholds, tone transmit amplitude detection, improved voltage regulator feedback.

US Patent:

7139547, Nov 21, 2006

Filed:

Nov 29, 2001

Appl. No.:

09/995695

Inventors:

Myles Wakayama - Laguna Niguel CA, US
Dana Vincent Laub - Irvine CA, US
Frank Carr - Newport Beach CA, US
Afshin Mellati - Aliso Viejo CA, US
David S. P. Ho - Singapore, SG
Chun-Ying Chen - Irvine CA, US
James Y. C. Chang - Irvine CA, US
Lawrence M. Burns - Laguna Hills CA, US
Young Joon Shin - Irvine CA, US
Patrick Pai - Honolulu HI, US
Iconomos A. Koullias - Reading PA, US
Ron Lipka - Sinking Spring PA, US
Luke Thomas Steigerwald - Sinking Spring PA, US
Alexandre Kral - Laguna Niguel CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 1/28

US Classification:

455333, 455334, 455339, 455340, 455341

Abstract:

A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel directly to baseband for further processing. The integrated tuner includes on-chip local oscillator generation, tunable baseband filters, and DC Offset cancellation. The integrated tuner can be implemented in a completely differential I/Q configuration for improved electrical performance. The entire direct conversion satellite tuner can be fabricated on a single semiconductor substrate using standard CMOS processing, with minimal off-chip components. The tuner configuration described herein is not limited to processing TV signals, and can be utilized to down-convert other RF signals to an IF frequency or baseband.