Browse Prior Art Database

Operator Control of Errors in Tape Recorders

IP.com Disclosure Number: IPCOM000050387D
Original Publication Date: 1982-Oct-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 3 page(s) / 54K

Publishing Venue

IBM

Related People

Danielsen, KD: AUTHOR [+2]

Abstract

To recover from errors, many tape recorders have close operator interaction. It is desirable to employ controls which are readily available to the operator and which have limited system significance, particularly when the tape recorder is used in connection with a data word, or text processor. In a cassette recorder, an unload or eject switch which actuates removal of the tape and tape cassette from the tape deck is readily available to the operator. In accordance with this article, such unload or eject switch is a primary operator tool for controlling and clearing error conditions from the tape recorder. A tape recorder has a tape deck which includes the tape transport mechanism and a cassette receiver, shown in the figure as the cassette.

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Operator Control of Errors in Tape Recorders

To recover from errors, many tape recorders have close operator interaction. It is desirable to employ controls which are readily available to the operator and which have limited system significance, particularly when the tape recorder is used in connection with a data word, or text processor. In a cassette recorder, an unload or eject switch which actuates removal of the tape and tape cassette from the tape deck is readily available to the operator. In accordance with this article, such unload or eject switch is a primary operator tool for controlling and clearing error conditions from the tape recorder. A tape recorder has a tape deck which includes the tape transport mechanism and a cassette receiver, shown in the figure as the cassette. An electronic controller at tape deck contains the recording and read-back circuits as well as other miscellaneous controls incident to operation of a tape recorder. The recorder has suitable electrical connections to a using unit. A digital message area provides visual indication to an operator of the operational status of the tape deck and controller, including indicating an error condition by a check indicator CHK. The controller face includes an unload or eject button UL, a ready indicator RDY, as well as other miscellaneous controls and indicators incident to a tape recorder.

Diverse types of error conditions can occur in such a recorder.

The flow chart illustrates the control and clearing of four types of these errors. All of the errors are suitably detected by error circuits within the controller, the detail of which is not pertinent to the present article. A type one error usually relates to a possible electronic circuit failure, such as in a write or recording voltage regulator. The error circuits actuate the controller to display the check message CHK while maintaining or enabling tension of the tape within the tape deck. The detected possible error is of the type that usually does not affect the transport of the tape. The recovery actions in the machine are initiated by the eject button UL with the actions taken dependent upon the operational state of the tape deck, i.e., is the tape deck ready for tape transducing operations or not ready for such operations. Such ready condition in a tape deck relates to positioning the tape with respect to a magnetic transducer (not shown). In a two-spool cassette, the cassette holder may have an intermediate position which makes the tape deck not ready and a play position in which the tape deck is ready for transducing operations. In a single-spool cassette or cartridge, the ready...