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Wireless alarm system 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-015/00
출원번호 US-0551815 (1990-07-12)
발명자 / 주소
  • Arthur James D. (Costa Mesa CA) Sanderford
  • Jr. H. Britton (New Orleans LA) Rouquette Robert E. (Kenner LA) Davis Robert J. (New Orleans LA)
출원인 / 주소
  • Axonn Corporation (New Orleans LA 02)
인용정보 피인용 횟수 : 91  인용 특허 : 0

초록

A wireless alarm system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and computer with a display. The spread spectrum transmitter includes an oscillator coupled to a microprocessor with chip code generation means, preamble register, address register and

대표청구항

In a method for communicating over a communications channel using spread spectrum modulation from a transmitter to a receiver by modulating a data-bit sequence with a chip sequence having a pseudorandom chip code, the improvement characterized by: generating a preamble for receiver chip code synchro

이 특허를 인용한 특허 (91)

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