Adaptive threshold circuits
First Claim
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1. IN AN ADAPTIVE THRESHOLD CIRCUIT, A MULTI-CHANNEL READ HEAD, UPPER AND LOWER THRESHOLD CIRCUITS CONNECTED TO EACH CHANNEL, CIRCUIT MEANS COMMON TO ALL OF SAID READ HEAD CHANNELS FOR PRODUCING A READ SIGNAL, ADDITIONAL CIRCUIT MEANS CONNECTED TO SAID CIRCUIT MEANS FOR ESTABLISHING MINIMUM MARK AND MAXIMUM ERASURE SIGNAL LEVELS, AND MEANS CONNECTING SAID ADDITIONAL CIRCUIT MEANS TO CONTROL THE UPPER AND LOWER THRESHOLD CIRCUITS.
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1 Claim
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1. IN AN ADAPTIVE THRESHOLD CIRCUIT, A MULTI-CHANNEL READ HEAD, UPPER AND LOWER THRESHOLD CIRCUITS CONNECTED TO EACH CHANNEL, CIRCUIT MEANS COMMON TO ALL OF SAID READ HEAD CHANNELS FOR PRODUCING A READ SIGNAL, ADDITIONAL CIRCUIT MEANS CONNECTED TO SAID CIRCUIT MEANS FOR ESTABLISHING MINIMUM MARK AND MAXIMUM ERASURE SIGNAL LEVELS, AND MEANS CONNECTING SAID ADDITIONAL CIRCUIT MEANS TO CONTROL THE UPPER AND LOWER THRESHOLD CIRCUITS.
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