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Security guard recording system

  • US 3,959,633 A
  • Filed: 09/10/1974
  • Issued: 05/25/1976
  • Est. Priority Date: 09/10/1974
  • Status: Expired due to Term
First Claim
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1. A watchman'"'"'s unit for recording correlated time and station identity information during a watchman'"'"'s tour, said unit comprisingclock signal means operable, upon connection of the unit to a station, to produce clock signals representative of elapsed time from the start of a tour,station identity signal means operative, upon connection of the unit to a station, to produce station signals representative of the identity of the station,clock signal storage means and station signal storage means for storing the signals produced by said clock signal means and said station identity signal means respectively,at least one of said signal means being operative to produce signals in the form of binary coded digital words each made up of a predetermined number of bits,the signal storage means associated with said one signal means having a plurality of digital bit storage elements at various locations therein for storing the bit data of a multiplicity of said digital words,address means connected to the signal storage means associated with said one signal means and operative sequentially to render different one of said digital bit storage elements receptive to applied digital bit data, anddecoder means connected to the output of said one signal means and operative sequentially to transmit different bits of a binary coded digital word signal being produced to its associated signal storage means,said address means and said decoder means being arranged to be operated in synchronism.

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