$\require{mediawiki-texvc}$

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

Method and apparatus for detecting transitions in an input signal

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-007/10
출원번호 US-0307520 (1999-05-07)
발명자 / 주소
  • Thomas C. Arends
  • Randy D. Elliott
출원인 / 주소
  • PSC Scanning, Inc.
대리인 / 주소
    Lyon & Lyon LLP
인용정보 피인용 횟수 : 19  인용 특허 : 28

초록

A method and apparatus for determining the transitions between binary levels of an input signal such as a scanned bar code label by detecting zero crossings of an approximated second derivative of the input signal. Samples of the input signal are obtained by using delay lines, sample-and-hold circui

대표청구항

1. An apparatus, comprising:means for reading a symbol and generating an input signal thereby, said symbol having relatively lighter and relatively darker features, and said input signal having transitions between signal peaks and valleys corresponding to transitions between the relatively lighter a

이 특허에 인용된 특허 (28)

  1. Joseph Eugene B. (East Setauket NY) Pavlidis Theodosios (Setauket NY), Analog waveform decoder using peak locations.
  2. Schaham Moshe (West Hartford CT), Auto focusing bar code reader.
  3. Cloke Robert L. (Santa Clara CA), Composite gate generator circuit for detecting valid data signals.
  4. Seo Shuzo (Tokyo JPX) Mogamiya Makoto (Tokyo JPX), Data symbol reader.
  5. Eastman Jay M. (Pittsford NY), Differentiating and integrating circuit for translating bar code signals into corresponding pulses.
  6. Brosnan Michael (Fremont CA) Quan Ronald (Cupertino CA), Digital bar code slot reader with threshold comparison of the differentiated bar code signal.
  7. Barkan Edward (Miller Place NY), Digital circuit for a laser scanner using a first derivative signal and a comparison signal.
  8. Barkan Edward (Miller Place NY) Bridgelall Raj (Mt. Sinar NY), Digitizer circuit for a bar code reader.
  9. Barkan Edward (Miller Place NY), Digitizer for a bar code reader utilizing a first derivative signal and an analog ground comparison signal.
  10. Martino Raymond A. (San Jose CA), Digitizer for barcode scanner.
  11. Barkan Edward (S. Setauket NY), Digitizer signal processing circuit for a bar code.
  12. Bridgelall Raj (Mt. Sinai NY) Barkan Edward (Miller Place NY), Digitizing circuit for a laser scanner including positive peak detectors.
  13. Lizzi Phillip (Deptford NJ) Shandelman Richard (Levittown PA), Electronic article surveillance system with improved differentiation.
  14. Peng Ke-Ou (Delft NLX), Focusing means for a symbol code reader.
  15. Ishikawa Hiromi (Kaisei JPX), Light beam scanner with focus-varying mechanism.
  16. Braathen Russell (Calgary CAX), Linear phase low pass filter.
  17. Coleman ; Jr. Edward P. (Fairport NY), Method and apparatus for detecting edges in a signal obtained from a bar code scanned in the Fresnel zone.
  18. Arends Thomas C. (Eugene OR) Elliott Randy D. (Eugene OR), Method and apparatus for detecting transitions in a time sampled input signal.
  19. Torrieri Don J. (3104 Cordoba St. Silver Spring MD 20904), Method and means for pulse detection.
  20. Tasaki Shinichi (Toda JPX), Optical reader with improved response to change in reflected signal.
  21. Hebert Raymond T. (Saratoga CA) Ekstrand John P. (Palo Alto CA), Signal processor method and apparatus.
  22. Aoki Kazuyo (Omiya JPX) Saeki Tomoki (Yokohama JPX), Signal transient improvement circuit.
  23. Peterson Donald S. (Philomath OR) Taussig Andrew P. (Eugene OR), Signal transition detection method and system.
  24. Metlitsky Boris ; Dvorkis Paul ; Barkan Edward, Single integrated circuit chip with on-board motor drive, laser drive and digitizer.
  25. Kukson Dean R. (Byron MN) Melas Constantin M. (Los Gatos CA) Poss Joey M. (Rochester MN), Single stage feedforward equalizer.
  26. Wang Ynjiun P. ; Ye Angi, Sub-pixel dataform reader with dynamic noise margins.
  27. Barkan Edward (Miller Place NY), System for digitizing a scanned signal indicating changes in signal intensity.
  28. Rudeen Robert W. (Eugene OR), Variable focus optical system for data reading.

이 특허를 인용한 특허 (19)

  1. Gibson, Gregory T., Bar code scanner having an adaptive threshold using a first derivative amplitude.
  2. Germaine, Gennady; Xian, Tao; Feng, Chen; Wang, Ynjiun; Zhu, Xiaoxun; Colavito, Stephen; Blake, Robert, Barcode reader with edge detection enhancement.
  3. Jensen, Henrik T.; Ibrahim, Brima B., Channel-select decimation filter with programmable bandwidth.
  4. Zhao, Yong, Clock-detecting circuit.
  5. Lina, Arnaud, Detecting a position of a sheet of light in an image.
  6. Lina, Arnaud, Detection of a sheet of light based on second derivative.
  7. Brown, Dean R.; Davis, Wyatt O.; Tauscher, Jason B., MEMS device having a drive coil with curved segments.
  8. Nakano,Susumu; Takahashi,Kentaro; Hayakawa,Hiroshi, Method and system for sensing a barcode.
  9. Ebermann, Joachim; Eichelkamp, Harald, Method for event-related determination of process variables.
  10. Brown, Dean R.; Davis, Wyatt O.; Gibson, Gregory T.; James, Richard A., Non-resonant drive for adaptive trajectory of a scanner system having a MEMS device.
  11. Collet, Roeland; James, Richard A.; Brown, Dean R.; Davis, Wyatt O., Scanning module for a scanner system having a MEMS device or the like.
  12. McNutt, Alan D., State machine for a pulse output function.
  13. Brown, Dean R.; Davis, Wyatt O.; Tauscher, Jason B.; Bowman, David R., Suspension for maintaining mirror flatness of a MEMS device in a scanner system or the like.
  14. Olmstead,Bryan L., System and method for determining a threshold for edge detection based on an undifferentiated equalized scan line signal.
  15. Gibson, Gregory T.; James, Richard A.; Davis, Wyatt O., System for determining an operational state of a MEMS based display.
  16. Gibson, Gregory T.; James, Richard A.; Davis, Wyatt O., System for determining an operational state of a MEMS based laser scanner.
  17. McNutt, Alan D., Systems, methods, and devices for generating variable-frequency pulses.
  18. McNutt, Alan D., Systems, methods, and devices for providing pulses to a motion device.
  19. Cornett, James; Freemon, Galen, Wizard for programming an intelligent module.
섹션별 컨텐츠 바로가기

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

AI-Helper 아이콘
AI-Helper
안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

선택된 텍스트