3130300

Information

• Patent Grant
• 3130300

• References
• Source

• Patent Number

  3,130,300

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1964
  60 years ago

• CPC

  • H04Q3/42 - Circuit arrangements for indirect selecting controlled by common circuits
  • G06F7/495 - in digit-serial fashion
  • G06F12/14 - Protection against unauthorised use of memory or access to memory
  • G06F13/00 - Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
  • G06F13/1689 - Synchronisation and timing concerns
  • G06F13/22 - using successive scanning
  • G06F15/04 - programmed simultaneously with the introduction of data to be processed
  • G06K17/00 - Methods or arrangements for effecting co-operative working between equipments covered by two or more of the preceding main groups
  • G11B20/1419 - to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa
  • G11B20/1423 - Code representation depending on subsequent bits
  • G11B20/16 - using non self-clocking codes
  • G11C11/22 - using ferroelectric elements
  • H03K21/00 - Details of pulse counters or frequency dividers
  • H03M7/00 - Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information or similar information or a subset of information is represented by a different sequence or number of digits
  • H03M7/08 - the radix being ten
  • H04L12/54 - Store-and-forward switching systems
  • H04L13/08 - Intermediate storage means
  • H04L25/245 - for start-stop signals
  • H04M15/04 - Recording calls , or communications in printed, perforated or other permanent form
  • H04M15/10 - Metering calls from calling party
  • H04M15/38 - Charging, billing or metering by apparatus other than mechanical step-by-step counter type
  • G06F2207/4923 - Incrementer or decrementer

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 708 - Electrical computers: arithmetic processing and calculating
  • 711 - Electrical computers and digital processing systems: memory
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER