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특허 상세정보

System for integrated tape hole detection by detecting an edge of the tape and/or a pattern on the tape

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01N-021/86   
미국특허분류(USC) 250/561 ; 250/570
출원번호 US-0814840 (1991-12-31)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 15  인용 특허 : 0
초록

A method and apparatus performs detection of an edge and detection of holes or other data patterns on a tape or other magnetic or optical medium. An array of photodetectors in an integrated circuit chip senses the intensity of light illuminating the chip with the tape running between a light source and the photodetectors. The holes or the other data patterns are sensed on the tape based on a comparison between detected light intensities with a programmable reference level. In addition, areas which may normally be sensed as a hole are discarded if these a...

대표
청구항

A method for detecting at least one pattern or hole on a tape comprising the steps of: disposing said tape in front of a matrix of photodetectors in an integrated circuit chip, the position of each photodetector being known from the manufacture of said chip, wherein each photodetector generates an electrical signal corresponding to the intensity of light incident thereon; illuminating said tape and said matrix such that an edge of said tape corresponding to a sharpest light-to-dark transition region is located; analyzing said signals in a plurality of ar...

이 특허를 인용한 특허 피인용횟수: 15

  1. Loew, Andreas. Film scanner and detection apparatus therefor. USP2010037671352.
  2. Saliba, George. Magnetic media with embedded optical servo tracks. USP2005126980390.
  3. Saliba,George. Method and system for tracking magnetic media with embedded optical servo tracks. USP2007037187515.
  4. Chen,Hong; Panish,Joseph M.; Lee,Tzuo Chang; Cappabianca,Leo. Method for forming a servo pattern on a magnetic tape. USP2006047029726.
  5. Okuda, Shinsuke; Ishii, Takashi. Method of writing servo signal on magnetic tape. USP2004056741415.
  6. Okuda, Shinsuke; Ishii, Takashi. Method of writing servo signal on magnetic tape. USP2004086771450.
  7. Saliba, George A.; Mallick, Satya A.; Kim, Chan; Turgeon, Carol; Cappabianca, Leo; Cronis, Lewis. Multi-channel magnetic tape system having optical tracking servo. USP2004076768608.
  8. Saliba,George A.; Mallick,Satya A.; Kim,Chan; Turgeon,Carol; Cappabianca,Leo; Cronis,Lewis. Multi-channel magnetic tape system having optical tracking servo. USP2006097110210.
  9. Saliba, George A.; Mallick, Satya; Seng, Daravuth; Choe, Geon. Multiple-layer backcoating for magnetic tape. USP2003056558774.
  10. Basra,Vijay K.; Guglielmo,Leo; Bellesis,George. Optical sensor to recording head alignment. USP2006047023650.
  11. Lee, Tzuochang; Chen, Hong; Zhao, Peiqian. Optical servo track identification on tape storage media. USP2005116961200.
  12. Bellesis, George; Guglielmo, Leo; Lee, Tzuochang; Johnson, Robert; Fitzpatrick, James. Optical to magnetic alignment in magnetic tape system. USP2005096940681.
  13. Chen,Hong; Panish,Joseph M.; Lee,Tzuo Chang; Cappabianca,Leo. Systems and method for forming a servo pattern on a magnetic tape. USP2006127153366.
  14. Lee, Tzuo-Chang; Tylock, James. Triple push-pull optical tracking system. USP2005096940676.
  15. Schwitzky Volkmar Rolf,DEX. Web or sheet edge position measurement process and device. USP1999085932888.