Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2003-10-03
2004-10-19
Ton, My-Trang Nu (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S053000, C327S065000
Reexamination Certificate
active
06806744
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to converting a low voltage differential signal to a single ended signal, and, in particular, to a method and apparatus for converting a low voltage differential signal to a single ended signal using a trans-conductance amplifier that is arranged in cooperation with a trans-impedance stage.
BACKGROUND OF THE INVENTION
Low Voltage Differential Signaling (hereinafter referred to as LVDS) is a technology used in data transmission systems. In LVDS, data is transmitted over two wires as a low voltage differential signal, with half of the differential signal on each wire. A low voltage differential signal typically has peak-to-peak amplitudes in the range from 250mV to 450mV. Since LVDS is a differential signaling method, the LVDS signal does not have an absolute reference level. The low voltage swing minimizes power dissipation, while maintaining high transmission speeds. Typical transmission speeds are over 100 Mbps (Mega-bits per second).
REFERENCES:
patent: 4539489 (1985-09-01), Vaughn
patent: 6429735 (2002-08-01), Kuo et al.
patent: 6433602 (2002-08-01), Lall et al.
patent: 6512400 (2003-01-01), Forbes
H. Träff, “Novel Approach to High Speed CMOS Current Comparators,”Electronics Letters, vol. 28, No. 3, 30th Jan. 1992, (3 pgs.).
William Redman-White, “A High Bandwidth Constant gmand Slew-Rate Rail-to-Rail CMOS Input Circuit and its Application to Analog Cells for Low Voltage VLSI Systems,”IEEE vol. 32, No. 5, May 1997 (12 pgs.).
L. Ravezzi et al., “Simple High-Speed CMOS Current Comparator,”Electronics Letters, vol. 33, No. 22, 23rd Oct., 1997 (2 pages).
Bell Marshall J.
Cooper David B.
Kozisek James
Hertzberg Brett A.
Merchant & Gould P.C.
National Semiconductor Corporation
Nguyen Hiep
Nu Ton My-Trang
LandOfFree
High speed low voltage differential to rail-to-rail single... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High speed low voltage differential to rail-to-rail single..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed low voltage differential to rail-to-rail single... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3325508