Coded data generation or conversion – Bodily actuated code generator
Reexamination Certificate
2005-12-27
2005-12-27
Wong, Albert K. (Department: 2635)
Coded data generation or conversion
Bodily actuated code generator
C341S005000, C341S111000, C340S870340, C336S129000, C336S130000, C324S207170, C178S020040
Reexamination Certificate
active
06980134
ABSTRACT:
Processing circuitry is provided for processing signals received from, for example, sense coils forming part of a position encoder used to encode the relative positions of two relatively movable members. The position encoder is such that each of the plurality of signals from the sense coils varies sinusoidally with the relative position of the members but out of phase with respect to each other. The processing circuitry comprises mixers for multiplying each of the received signals with one of a corresponding plurality of periodic time varying signals, each having the same predetermined period and a different predetermined phase, and an adder for adding the signals from the mixers. The phase of the mixing signals are chosen so that the output signals from the adder contains a single periodic component having the predetermined period whose phase varies with the relative position of the two members. Preferably, a reference channel is provided in order to allow for compensation of common phase errors in both channels. The period time varying signals multiplied with each of the signals from the position encoder preferably comprise a two or three level square wave signal having a number of transitions designed to reduce the low order harmonic content of the mixing signals.
REFERENCES:
patent: 2887783 (1959-01-01), Childa
patent: 3482242 (1969-12-01), Hargrove
patent: 3812481 (1974-05-01), Stednitz
patent: 3905356 (1976-07-01), Kraus
patent: 4014015 (1977-03-01), Gundlach
patent: 4095060 (1978-01-01), Burr et al.
patent: 4094572 (1978-06-01), Burr et al.
patent: 4097664 (1978-06-01), Burr
patent: 4150352 (1979-04-01), Pomella et al.
patent: 4255617 (1981-03-01), Carau, Sr. et al.
patent: 4423286 (1983-12-01), Bergeron
patent: 4425511 (1984-01-01), Borsh
patent: 4482784 (1984-11-01), Whetstone
patent: 4504832 (1985-03-01), Conte
patent: 4507638 (1985-03-01), Brosh
patent: 4532376 (1985-07-01), Rockwell
patent: 4577057 (1986-03-01), Blesser
patent: 4609776 (1986-09-01), Murakami et al.
patent: 4642321 (1987-02-01), Bohoenberg et al.
patent: 4693778 (1987-09-01), Swiggett et al.
patent: 4697144 (1987-09-01), Howbrook
patent: 4697244 (1987-09-01), Murakami et al.
patent: 4704501 (1987-11-01), Taguchi et al.
patent: 4709209 (1987-11-01), Murakami et al.
patent: 4711028 (1987-12-01), Swiggett et al.
patent: 4711977 (1987-12-01), Miyamori et al.
patent: 4723446 (1988-02-01), Saito et al.
patent: 4734546 (1988-03-01), Landmeier
patent: 4737698 (1988-04-01), McMullin et al.
patent: 4786865 (1988-11-01), Yamanami et al.
patent: 4820961 (1989-04-01), McMullin
patent: 4848496 (1989-07-01), Murakami et al.
patent: 4868443 (1989-09-01), Rossi
patent: 4878553 (1989-11-01), Yamanami et al.
patent: 4891590 (1990-01-01), Hammel et al.
patent: 4893077 (1990-01-01), Auchterlonie
patent: 4902858 (1990-02-01), Yamanami et al.
patent: 4963703 (1990-10-01), Phillips et al.
patent: 5815091 (1990-10-01), Dames
patent: 4975546 (1990-12-01), Craig
patent: 4985691 (1991-01-01), Pulyer et al.
patent: 4999461 (1991-03-01), Murakami et al.
patent: 5013047 (1991-05-01), Schwab
patent: 5028745 (1991-07-01), Yamanami et al.
patent: 5041785 (1991-08-01), Bogaerts et al.
patent: 5062286 (1992-01-01), Ryan et al.
patent: 5060928 (1992-02-01), Chan
patent: 5136125 (1992-08-01), Russell
patent: 5187389 (1993-01-01), Schalk
patent: 5406155 (1995-04-01), Persson
patent: 5486731 (1996-01-01), Masaki et al.
patent: 4223300 (1997-04-01), Wiklund
patent: 5619431 (1997-04-01), Oda
patent: 5625239 (1997-04-01), Persson et al.
patent: 5646496 (1997-07-01), Woodland et al.
patent: 3772587 (1997-11-01), Ferrand et al.
patent: 5693993 (1997-12-01), Ito et al.
patent: 5748110 (1998-05-01), Sekizawa et al.
patent: 5783940 (1998-07-01), Kolomeitsev
patent: 4583246 (2000-06-01), Vierti et al.
patent: 6124708 (2000-09-01), Dames
patent: 6522128 (2003-02-01), Ely et al.
patent: 6534970 (2003-03-01), Ely et al.
patent: 1134848 (1962-08-01), None
patent: 3500121 (1986-07-01), None
patent: 3620412 (1987-12-01), None
patent: 0159191 (1985-10-01), None
patent: 0182085 (1986-05-01), None
patent: 0182085 (1986-05-01), None
patent: 0209513 (1986-06-01), None
patent: 0218745 (1987-04-01), None
patent: 0772148 (1987-06-01), None
patent: 0313048 (1989-04-01), None
patent: 0710380 (1990-05-01), None
patent: 0537468 (1993-04-01), None
patent: 0552001 (1993-07-01), None
patent: 0554900 (1993-08-01), None
patent: 0607694 (1994-07-01), None
patent: 0680009 (1996-11-01), None
patent: 0743508 (1996-11-01), None
patent: 1325017 (1962-03-01), None
patent: 2298082 (1976-08-01), None
patent: 2682760 (1993-04-01), None
patent: 851543 (1960-10-01), None
patent: 1122763 (1968-08-01), None
patent: 2012431 (1979-07-01), None
patent: 2021273 (1979-11-01), None
patent: 2042183 (1980-09-01), None
patent: 2059593 (1981-04-01), None
patent: 2064125 (1981-06-01), None
patent: 2074736 (1981-11-01), None
patent: 2103943 (1983-03-01), None
patent: 02-248816 (1990-10-01), None
patent: 97/14935 (1947-04-01), None
patent: WO 92/12401 (1992-07-01), None
patent: WO 94/25829 (1994-11-01), None
patent: WO 96/03188 (1996-02-01), None
patent: WO 98/00921 (1998-01-01), None
Patent Abstracts of Japan, vol. 010, No. 009 (P-420), Jan. 14, 1986 & JP 60 165512 A (Toshiba KK), Aug. 28, 1985.
Klatt, “Phase of Digital Data Fixes Shaft Angle”, Electrical Design News, vol. 16, No. 12, Jun. 15, 1971, pp. 53-56, XP002045871.
Patent Abstracts of Japan, vol. 15, No. 37 (P-1159), Jan. 20, 1991 & JP 02 276314 A (OmronTateisi Electron Co), Nov. 9, 1990.
Patent Abstracts of Japan, vol. 10, No. 32 (E-379(, Feb. 1966 & JP 60 189231 A (Matsushita Denki Sangyo KK, Sep. 1955).
McDonnel, “The Use of Inductosyn to Digital Converters in Linear Control Systems”, Automation, vol. 10, No. , Nov. 11-12, 1975-Dec. 1975, pp. 31-32.
Dames Andrew N.
Ely David T.
Nixon & Vanderhye P.C.
Synaptics (UK) Limited
Wong Albert K.
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