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AssigneeInternational Business Machines Corporation
InventorsJaydip Bhaumik, Raymond Alan Richetta
Estimating the term…
A method and apparatus are provided for optimizing calibration of a tunable filter over a wide range of frequencies in a data channel of a direct access storage device (DASD). Calibration codes are received for low corner frequency, banding, and high corner frequency. A programmable diode is provided with a DC portion and a tunable digital-to-analog converter (DAC). A calibration control current is generated for calibrating the tunable filter utilizing the programmable diode and the calibration codes. The programmable diode is used to vary the calibration control current to calibrate the tunable filter to a correct low corner frequency and high corner frequency. The programmable diode can be programmed over a large range.
A method for optimizing calibration of a tunable filter in a direct access storage device comprising the steps of:
A method for optimizing calibration of a tunable filter in a direct access storage device as recited in claim 7 includes the step of generating a low corner diode current from said temperature compensated current applied to said programmable diode.
Apparatus for optimizing calibration of a tunable filter in a direct access storage device comprising:
Dependencies are inferred from the claim text.