Amplifiers – Miscellaneous – Amplifier protection means
Reexamination Certificate
2005-05-24
2005-05-24
Choe, Henry (Department: 2817)
Amplifiers
Miscellaneous
Amplifier protection means
C330S251000
Reexamination Certificate
active
06897725
ABSTRACT:
A class D amplifier is provided with a frequency characteristic compensation function. An automatic frequency characteristic compensation circuit is disposed at an input unit of a class D amplifier. The frequency characteristic of the class D amplifier is automatically measured while a load is connected, using a test signal having a predetermined frequency and signal level. An inverse characteristic is computed for compensating the frequency characteristic to the design frequency characteristic, and the inverse characteristic is set in the automatic frequency characteristic compensation circuit.
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European Patent Office Search Report on European Patent Application No. EP 02 25 2142, dated Nov. 5, 2003.
Choe Henry
McGinn & Gibb PLLC
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