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METHOD AND APPARATUS FOR TRANSFERRING DATA FROM A VOLATILE DATA STORE UPON THE OCCURRENCE OF A POWER FAILURE IN A COMPUTER

  • US 3,801,963 A
  • Filed: 09/28/1972
  • Issued: 04/02/1974
  • Est. Priority Date: 09/28/1972
  • Status: Expired due to Term
First Claim
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1. Apparatus for use in conjunction with a computer having a volatile data store and effective for preserving stored data upon the occurrence of a power failure, said apparatus comprising:

  • a. an auxiliary power source associated with said computer, b. a read-write head coupled to said volatile data store, c. removably mounted auxiliary data storage means cooperably disposed relative to said read-write head, said auxiliary data storage means comprising a magnetic tape cartridge equipped with a magnetic tape transferable between a supply spool and a take-up spool thereof, d. a motor cooperably disposed relative to said auxiliary data storage means and to said auxiliary power source, and e. circuit means coupled to said auxiliary power source, to said volatile data source, and to said motor and effective upon the occurrence of a power failure in said computer to preserve the data stored in said volatile data store and to activate said magnetic tape of said auxiliary data storage means relative to said read-write head such that said stored data is preservably transferred to said magnetic tape cartridge comprising said auxiliary data storage means for subsequent re-entry into said volatile data store of said computer upon the alleviation of said power failure.

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