Magnetic record-read control process and apparatus

Abstract

Abstract A MAGNETIC RECORD-READ APPARATUS AND PROCESS HAVING SUPERVISORY CONTROL CIRCUITRY TO INDICATE WHETHER INFORMATION IS RECORDED CORRECTLY. INFORMATION BITS ARE RECORDED ON SUCCESSIVE SEGMENTS OF A PREMAGNETIZED MAGNETIC TAPE. EACH RECORDED BIT IS READ AND SUPERVISORY CONTROL SIGNALS ARE THEREBY PRODUCED, WHICH ARE COMPARED TO THE RECORDING CURRENT, TO DETERMINE IF THE INFORMATION BIT HAS BEEN CORRECTLY RECORDED. BEFORE ADVANCING THE MAGNETIC TAPE TO THE NEXT SEGMENT, AN INCORRECTLY RECORDED BIT MAY BE CORRECTED. A VIBRATOR DEVICE IS UTILIZED IN OPERATIVE CONTACT WITH THE MAGNETIC TAPE TO VIBRATABLY MOVE A PORTION OF THE MAGNETIC TAPE SEGMENT OVER THE MAGNETIC RECORD-READ HEAD AFTER THE BIT HAS BEEN RECORDED, TO GENERATE THE SUPERVISORY CONTROL SIGNALS. EVALUATOR MEANS ARE UTILIZED TO EVALUATE THE SUPERVISORY CONTROL SIGNALS AND LOGIC CIRCUITRY CONSIDERS THE EVALUATION WITH RESPECT TO THE INPUT TO THE RECORDING HEAD, TO DETERMINE WHETHER OR NOT THE INFORMATION BIT IS CORRECTLY RECORDED. WHEN THE BIT IS RECORDED CORRECTLY, OR WHEN IT IS RECORDED INCORRECTLY AND IS SUBSEQUENTLY CORRECTED, THE TAPE IS ADVANCED TO RECORD THE NEXT INFORMATION BIT ON THE SUCCESSIVE SEGMENT.

Inventors

• 👤 Hubert Schlossbauer

Bibliographic Details