Cassette tape data processing terminal unit with latch
AssigneeSharp Kabushiki Kaisha
InventorYouichi Ito
Life of this patent
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Abstract
The data processing terminal unit in the form of a point of sale transaction device disclosed herein contains a cassette tape deck which includes a cassette type magnetic tape for data manipulation and a cassette tape loading member for allowing the entry and withdrawal of the cassette tape in addition to a cassette tape recording scheme. There is provided a deck state sensing arrangement which detects open and closed states of the tape loading member, a tape loading state, the positions of various records included in the cassette tape and so forth. The tape loading member is opened to allow the withdrawal of the cassette tape loaded within the tape recording scheme only after writing end markings into the cassette tape.
Claims5
A data processing terminal unit comprising:
- a cassette tape including a data field;
- recording means associated with said cassette tape for recording data thereon;
- data input means connected with said recording means for transmitting data therethrough to said cassette tape;
- said cassette tape including at least one data field;
- entry means in said data input means providing start and end marking signals to said recording means to effect start and end markings on said tape defining the beginning and end, respectively, of said data field;
- and
- housing means for releasably receiving said cassette tape, comprising:
- closure means for closing and opening said housing to contain or release said cassette tape therefrom,
- sensing means in said housing means detecting the presence and absence of a said cassette tape in said housing and the closed and open states of said closure means and providing state signals representative thereof,
- circuit means responsive to said state signals and said start and end marking signals to provide closure control signals in response to predetermined combinations of said state and marking signals, and
- latch means responsive to said closure control signals to selectively preclude opening and closing of said closure means.
Dependencies are inferred from the claim text.