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US3950782A Expired / Lapsed US ⏱️ 0.0 years remaining

Data storage and retrieval systems for use with plural track storage medium

Assignee: LEKTROMEDIA Ltd
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Filing: 1973-08-06
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Granted: 1976-04-13
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Expires: 1993-08-06
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Abstract

Abstract A system for storage and retrieval of information including address messages and data messages on a multi-track magnetic tape. The data messages are preferably present in the form of audio information. The address messages are derived from a series of location derivation codes which are generated through pulse counts from the spool of a tape transport to verify the location of a message on the tape. These location derivation codes are processed in a remote terminal to form an index thereof and are utilized in retrieving the address messages and the data messages associated therewith from the tape by searching for and selecting the address message which corresponds to the location of the associated data message on the tape. The tape is generally advanced at high speed movement in the searching operation, and the speed thereof is reduced during recording and retrieval operation.

Inventors

  • 👤 Peter Majendie Carey
  • 👤 Norman Christopher John Tate

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 13:03
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/005; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08714; G11B27/00; G11B27/02; G11B27/10; G11B27/102; G11B27/107; G11B27/19; G11B27/28; G11B27/32; G11B27/322; G11B27/327; G11B27/328; G11B2220/00; G11B2220/90

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 397 words
A system for the storage and retrieval of information including at least one address message and one data message on a movable multi-track tape storage medium and which tape medium has a leader portion and a message recording portion; said system comprising: a. at least one information handling terminal capable of recording information on said tape storage medium and including a tape transport and a terminal processor and memory means, b. controller means operatively connected to each terminal processor of each information handling terminal, c. pulse generating means operatively associated with said tape transport of said information handling terminal to generate an index pulse and an index number therefrom for each data message recorded on the message recording portion of said storage medium, and which index number is related to the location of the address message on the storage medium, d. recording means operatively associated with said information handling terminal for recording each address message and data message on the message recording portion of said tape medium and thereafter recording the index number for each address message on the leader portion of said tape medium, e. terminal storage means forming part of each said terminal processor for introducing and storing the index numbers in said terminal storage means and forming a general index of such index numbers, f. means permitting operative connection between said information handling terminal and controller means to said storage means to receive the index numbers at the storage means, g. said information handling terminal also including reading means for reading an index number on the leader portion of the tape medium and introducing said index number into said terminal storage means as an instruction for reproducing a data message associated with a particular address message, h. means operatively associated with said information handling terminal to access the storage means for the index number associated with a particular desired address message from the general index and cross-referencing the index number read from the leader portion against a like index number in the general index for retrieving the address message on said tape storage medium at said information handling terminal with such index number, i. a central computer operatively connected to said controller means and each said information handling terminal being remote to said computer, and j. a video display terminal operatively connected to said controller means and being located at said information handling terminal.
Claim 2
Independent Claim 397 words
A system for the storage and retrieval of information including at least one address message and one data message on a movable multi-track tape storage medium and which tape medium has a leader portion and a message recording portion; said system comprising: a. at least one information handling terminal capable of recording information on said tape storage medium and including a tape transport and a terminal processor and memory means, b. controller means operatively connected to each terminal processor of each information handling terminal, c. pulse generating means operatively associated with said tape transport of said information handling terminal to generate an index pulse and an index number therefrom for each data message recorded on the message recording portion of said storage medium, and which index number is related to the location of the address message on the storage medium, d. recording means operatively associated with said information handling terminal for recording each address message and data message on the message recording portion of said tape medium and thereafter recording the index number for each address message on the leader portion of said tape medium, e. terminal storage means forming part of each said terminal processor for introducing and storing the index numbers in said terminal storage means and forming a general index of such index numbers, f. means permitting operative connection between said information handling terminal and controller means to said storage means to receive the index numbers at the storage means, g. said information handling terminal also including reading means for reading an index number on the leader portion of the tape medium and introducing said index number into said terminal storage means as an instruction for reproducing a data message associated with a particular address message, h. means operatively associated with said information handling terminal to access the storage means for the index number associated with a particular desired address message from the general index and cross-referencing the index number read from the leader portion against a like index number in the general index for retrieving the address message on said tape storage medium at said information handling terminal with such index number, i. a central computer operatively connected to said controller means and each said information handling terminal being remote to said computer, and j. a video display terminal operatively connected to said controller means and being located at said information handling terminal.
Claim 3
Independent Claim 355 words
A system for the storage and retrieval of information including at least one address message and one data message on a movable multi-track tape storage medium and which tape medium has a leader portion and a message recording portion; said system comprising: a. at least one information handling terminal capable of recording information on said tape storage medium, b. controller means operatively connected to each information handling terminal, c. pulse generating means operatively associated with said information handling terminal to generate an index pulse and an index number therefrom for each data message recorded on the message recording portion of said storage medium, and which index number is related to the location of the address message on the storage medium, d. recording means operatively associated with said information handling terminal for recording each address message and data message on the message recording portion of said tape medium and thereafter recording the index number for each address message on the leader portion of said tape medium, e. terminal storage means for introducing and storing the index numbers in said terminal storage means and forming a general index of such index numbers, f. means permitting operative connection between said information handling terminal and controller means to said storage means to receive the index numbers at the storage means, g. said information handling terminal also including reading means for reading an index number on the leader portion of the tape medium and introducing said index number into said terminal storage means as an instruction for reproducing a data message associated with a particular address message, h. means operatively associated with said information handling terminal to access the storage means for the index number associated with a particular desired address message from the general index and cross-referencing the index number read from the leader portion against a like index number in the general index for retrieving the address message and associated data message on said tape storage medium at said information handling terminal with such index number, and i. video display means operatively associated with said information handling terminal to display the data messages and/or address messages associated therewith.
Claim 4
Independent Claim 355 words
A system for the storage and retrieval of information including at least one address message and one data message on a movable multi-track tape storage medium and which tape medium has a leader portion and a message recording portion; said system comprising: a. at least one information handling terminal capable of recording information on said tape storage medium, b. controller means operatively connected to each information handling terminal, c. pulse generating means operatively associated with said information handling terminal to generate an index pulse and an index number therefrom for each data message recorded on the message recording portion of said storage medium, and which index number is related to the location of the address message on the storage medium, d. recording means operatively associated with said information handling terminal for recording each address message and data message on the message recording portion of said tape medium and thereafter recording the index number for each address message on the leader portion of said tape medium, e. terminal storage means for introducing and storing the index numbers in said terminal storage means and forming a general index of such index numbers, f. means permitting operative connection between said information handling terminal and controller means to said storage means to receive the index numbers at the storage means, g. said information handling terminal also including reading means for reading an index number on the leader portion of the tape medium and introducing said index number into said terminal storage means as an instruction for reproducing a data message associated with a particular address message, h. means operatively associated with said information handling terminal to access the storage means for the index number associated with a particular desired address message from the general index and cross-referencing the index number read from the leader portion against a like index number in the general index for retrieving the address message and associated data message on said tape storage medium at said information handling terminal with such index number, and i. video display means operatively associated with said information handling terminal to display the data messages and/or address messages associated therewith.
Claim 5
Dependent Claim 36 words
The system for the storage and retrieval of information of claim 2 further characterized in that said controller means is operatively connected to a central computer and said information handling terminal is remote to said computer.
Claim 6
Independent Claim 256 words
A method for storage and retrieval of information including a plurality of address messages and a plurality of data messages on a plural track storage medium, said method comprising: a. recording a plurality of address messages, each one of said address messages comprising a plurality of multi-bit address words on one track of the storage medium, b. one of the address words in each address message being a most significant address word and another one of the address words being a least significant address word, the most significant bit of each most significant address word in each address word always being the same bit, and the most significant bit of each least significant address word in each address message also being the same bit, c. recording a data message associated with each address message on another track of the storage medium and which data messages are addressably located with respect to the address messages with which they are associated, d. generating an index number for each of the address messages which is related to the location of the address and data messages on the storage medium, e. generating a general index of each of the index numbers to identify the address messages from their respective index numbers, f. storing such general index in a processing terminal number, g. locating each address message and the data message associated therewith by accessing the general index in the processing terminal for the index number associated with such address message, h. and both audially and visually presenting the data messages.
Claim 7
Independent Claim 256 words
A method for storage and retrieval of information including a plurality of address messages and a plurality of data messages on a plural track storage medium, said method comprising: a. recording a plurality of address messages, each one of said address messages comprising a plurality of multi-bit address words on one track of the storage medium, b. one of the address words in each address message being a most significant address word and another one of the address words being a least significant address word, the most significant bit of each most significant address word in each address word always being the same bit, and the most significant bit of each least significant address word in each address message also being the same bit, c. recording a data message associated with each address message on another track of the storage medium and which data messages are addressably located with respect to the address messages with which they are associated, d. generating an index number for each of the address messages which is related to the location of the address and data messages on the storage medium, e. generating a general index of each of the index numbers to identify the address messages from their respective index numbers, f. storing such general index in a processing terminal number, g. locating each address message and the data message associated therewith by accessing the general index in the processing terminal for the index number associated with such address message, h. and both audially and visually presenting the data messages.

References Cited (Backward Citations)

US2932010A Cited
US3399394A Cited
US3631421A Cited
US3792442A Cited
US3714382A Cited
US3686650A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-04-13 1979-10-13 1980-04-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-04-13 1983-10-13 1984-04-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-04-13 1987-10-13 1988-04-13 $7700.00 Window Closed / Lapsed

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