Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2005-11-08
2005-11-08
Tran, Khai (Department: 2637)
Pulse or digital communications
Receivers
Interference or noise reduction
C455S343100, C455S574000
Reexamination Certificate
active
06963626
ABSTRACT:
A communication system uses analog and digital circuits along the same data path in a manner that permits the analog circuitry to avoid adverse affects caused by the digital circuitry. Consistent with one embodiment directed to a signal processing system that detects faint incoming signals, the analog and digital circuits are implemented on a single piece of silicon. In such signal processing systems, noise generated by digital processing blocks can degrade the performance of sensitive analog portions. The effective noise is reduced by causing the analog and digital portions of the system to function during separate time intervals. The noise-generating portions of the system may then be turned off during a first data-communication interval while the analog block operates. The data acquired during this period is stored for subsequent processing by the digital portion during a second shorter data-communication interval. Other aspects are applicable to reception arrangements in which part of the incoming signal may be disregarded without significant degradation in performance of the rest of the system, and other aspects are directed to transmission arrangements in which the inverse of the above reception arrangement is used.
REFERENCES:
patent: 4271488 (1981-06-01), Saxe
patent: 4544914 (1985-10-01), Chan et al.
patent: 4667311 (1987-05-01), Ul Haq et al.
patent: 4746899 (1988-05-01), Swanson et al.
patent: 4882712 (1989-11-01), Ohno et al.
patent: 4961184 (1990-10-01), Owen
patent: 4991172 (1991-02-01), Cidon et al.
patent: 5047665 (1991-09-01), Burt
patent: 5065157 (1991-11-01), Ribner et al.
patent: 5144525 (1992-09-01), Saxe et al.
patent: 5146617 (1992-09-01), Moen, Jr.
patent: 5200983 (1993-04-01), Kogan
patent: 5294928 (1994-03-01), Cooper et al.
patent: 5307066 (1994-04-01), Kobayashi et al.
patent: 5317183 (1994-05-01), Hoffman et al.
patent: 5373293 (1994-12-01), Hirata
patent: 5422807 (1995-06-01), Mitra et al.
patent: 5426392 (1995-06-01), Kornfeld
patent: 5475255 (1995-12-01), Joardar et al.
patent: 5485029 (1996-01-01), Crabbe et al.
patent: 5586149 (1996-12-01), Connell et al.
patent: 5594279 (1997-01-01), Itou et al.
patent: 5604500 (1997-02-01), Murakami
patent: 5623159 (1997-04-01), Monk et al.
patent: 5640047 (1997-06-01), Nakashima
patent: 5640161 (1997-06-01), Johnson et al.
patent: 5649160 (1997-07-01), Corry et al.
patent: 5649166 (1997-07-01), Saldanha et al.
patent: 5675337 (1997-10-01), Moriyama
patent: 5706004 (1998-01-01), Yeung
patent: 5719572 (1998-02-01), Gong
patent: 5747982 (1998-05-01), Dromgoole et al.
patent: 5754601 (1998-05-01), Horng et al.
patent: 5764074 (1998-06-01), Wykes et al.
patent: 5767561 (1998-06-01), Frei et al.
patent: 5841396 (1998-11-01), Krasner
patent: 5912644 (1999-06-01), Wang
patent: 5959980 (1999-09-01), Scott
patent: 6138190 (2000-10-01), Nordling
patent: 6300899 (2001-10-01), King
patent: 6381229 (2002-04-01), Narvinger et al.
patent: 447302 (1991-09-01), None
patent: 447302 (1991-09-01), None
Shaeffer, et al., “A 115mW CMOS GPS Receiver”, 1998 IEEE International Solid-State Circuits Conference, Feb. 6, 1998, pp 122-123.
Chada, Kanwar, “The Global Positioning System: Challenges in Bringing GPS to Mainstream Consumers”, 1998 IEEE International Solid-State Circuits Conference, Feb. 5, 1998, pp 26-28.
Sanielevici, S., et al., “A 900 MHz Transceiver Chipset for Two-Way Paging Applications, ”IEEE Journal of Solid-State Circuits, vol 33, Dec. 1998, Figure 1 (Front-end) and Figure 2 (Baseband).
Lee Thomas H.
Meng Theresa H.
Reader Sydney
Shaeffer K. Derek
Lugo David B.
The Board of Trustees of the Leland Stanford Junior University
Tran Khai
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