[특허]Chain code encoder

Chain code encoder 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H03M-001/00
출원번호	US-0623843 (1984-06-22)
발명자 / 주소	Hafle Ralph S. (Benton AR) Love Mark D. (Littlerock AR)
출원인 / 주소	BEI Motion Systems Company, Inc. (Santa Barbara CA 02)
인용정보	피인용 횟수 : 21 인용 특허 : 0

초록 ▼

A positional encoder which provides absolute position information from a single code track. A chain code track is positioned on a code disk to supply position words of N consecutive bits, each position word being unique and corresponding to a different position of the code disk. Means are provided for detecting the elements of the chain code as the code disk is rotated with respect to a fixed point. The position data are accumulated in the order received and N consecutive bits are examined to determine the position to which the bits correspond.

대표청구항 ▼

An apparatus providing information of the position of a rotating member having an axis of rotation, comprising code means positioned for rotation with the rotating member for providing a code sequence of code cycles arranged circumferentially about the axis of rotation of the rotating member, wherein each code cycle is associated with a unique position of the rotating member and provides position data, and further wherein the position data from each code cycle, in combination with the position data from adjacent N-1 consecutive code cycles, defines a pattern which is unique from the pattern formed by the position data from any other N consecutive code cycles in the code sequence, so that each N consecutive code cycles identify a unique position of the rotating member wherein the code sequence comprises a series of bits formed by the bits occupying a selected bit position in each of the words in a sequence of N-bit code words the sequence of N-bit code words being formed according to the steps of: a. beginning with all N-bits of a first N-bit code word in a first logic state; b. shifting the bits in the first N-bit code word by one bit position so that a bit position is vacated; c. setting the vacated bit position to a second logic state, different from the first logic state, to form a new N-bit code word and assigning the new N-bit code word to the sequence of N-bit code words if the new N-bit code word does not match any of the other N-bit code words in the sequence of N-bit code words; d. setting the vacated bit position to the first logic state to form an alternate N-bit code word and assigning the alternate N-bit code word to the sequence of N-bit code words if the new N-bit code word of step “c” matches any of the other N-bit code words in the sequence of N-bit code words; and e. repeating steps “b”through “d”until 2N N-bit code words are present in the sequence of N-bit code words, wherein in step “b”the “first N-bit code word”is replaced by the N-bit code word that was assigned to the sequence of N-bit code words in steps “c”and “d”; means for reading the code cycles of the code sequence which are brought into instantaneous registration with a monitoring point as the rotating member is rotated, wherein the monitoring point is fixed in position relative to the rotating member; means coupled to the reading means for extracting the position data from the code cycles being read by the reading means and for temporarily storing the position data in the order received; and means coupled to the extracting and storing means for converting the consecutive sequence of the N most recently received position data into positional information.

이 특허를 인용한 특허 (21)

Dalton,Bruce, Absolute position chain encoder.
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Venugopal Prasad V. ; Jiang Nan, Absolute position detection within 1 revolution using 3-channel incremental encoders with high resolution index track.
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Venugopal Prasad V. ; Jiang Nan, Absolute position detection within 1 revolution using 3-channel incremental encoders with high resolution track.
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Andermo Nils Ingvar ; Masreliez Karl G. ; Steinke Kurt E., Absolute position transducer having a non-binary code-track-type scale.
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Hillis Alexander E. ; LaBarge Ronald P. ; Williams Robert A., Bidirectional synthesis of pseudorandom sequences for arbitrary encoding resolutions.
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Norcross Richard J. ; Engvall David P. ; Bunch W. Robert, Chain code position detector.
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Setbacken, Robert M.; Franklin, Ruth E., Code disk, optical encoder, and motor system.
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Kibrick Robert I. (Santa Cruz CA) Delaney Calvin R. (Aptos CA), Encoder for measuring both incremental and absolute positions of moving elements.
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Jansson, Bjorn E. B., High speed quadrature counter.
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Masreliez Karl G. ; Andermo Nils Ingvar ; Atherton Kim W., Induced current absolute position transducer method using a code-track-type scale and read head.
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Smith, Alan Dane; Valente, Christopher M.; Rathgebe, Martin; Siegler, Mark D.; Fitzgibbon, James J., Method and apparatus for determining a position of a movable barrier.
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Smith, Alan Dane; Valente, Christopher M.; Rathgeber, Martin; Siegler, Mark D.; Fitzgibbon, James J., Method and apparatus for determining a position of a movable barrier.
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Lukac, Niko; Zalik, Borut, Method and apparatus for near-lossless compression and decompression of 3D meshes and point clouds.
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Fox David A. (Shawnee Township ; Allen County OH), Position detector utilizing gray code format.
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Goldman, Andrew M.; Remillard, Paul A., Position encoder with programmable trigger output signal.
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Watanabe Tsuneo (Yokohama JPX) Okada Kouzou (Yokohama JPX), Positional information generating apparatus and code means therefor.
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Schmidt, Jorgen; Christiansen, Morten; Dall, Hans Hilmar, Rotary encoder.
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Chambers Barbara Lynne, Sequential numerical information encoder and decoder.
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Wingate Sidney A. (Concord MA) Rust Gregory J. (Arlington MA), Single track absolute encoder.
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Wingate Sidney A. (Concord MA) Rust Gregory J. (Arlington MA), Single track absolute encoder.
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Timm Daniel P., Statistical adjustment of A/D non-linearities to correct intensity ARI.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Chain code encoder 원문보기

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이 특허를 인용한 특허 (21)

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Chain code encoder 원문보기

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이 특허를 인용한 특허 (21)

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