Gain control circuit and receiving system
AssigneeSony Corporation
InventorsYusuke Yoneyama, Noboru Sasho, Takeo Tokunaga
Life of this patent
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Abstract
Disclosed herein is a gain control circuit including: an amplifying section configured to amplify an input voltage in such a manner that amplitude of an output voltage at an output terminal is kept constant; an allowable voltage acquirer configured to acquire an allowable voltage of an apparatus connected to the output terminal; a voltage divider configured to divide the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage; and an adjusting section configured to further amplify the amplified input voltage according to the ratio and supply a resulting voltage to the output terminal.
Claims8
A gain control circuit comprising:
- an amplifying section configured to amplify an input voltage in such a manner that amplitude of an output voltage at an output terminal is kept constant;
- an allowable voltage acquirer configured to acquire an allowable voltage of an apparatus connected to the output terminal;
- a voltage divider configured to divide the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage;
- and
- an adjusting section configured to further amplify the amplified input voltage according to the ratio and supply a resulting voltage to the output terminal.
A receiving device comprising:
- an amplifying section configured to amplify an input voltage in such a manner that amplitude of an output voltage at an output terminal is kept constant;
- an allowable voltage acquirer configured to acquire an allowable voltage of an apparatus connected to the output terminal;
- a voltage divider configured to divide the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage;
- and
- an adjusting section configured to further amplify the amplified input voltage according to the ratio and supply a resulting voltage to the output terminal.
A receiving system comprising:
- a gain control circuit configured to include
- an amplifying section that amplifies an input voltage on which a received signal is superimposed in such a manner that amplitude of an output voltage at an output terminal is kept constant in response to input of the input voltage,
- an allowable voltage acquirer that acquires an allowable voltage of an apparatus connected to the output terminal,
- a voltage divider that divides the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage, and
- an adjusting section that further amplifies the amplified input voltage according to the ratio and supplies a resulting voltage to the output terminal;
- and
- a signal processing device configured to process the received signal superimposed on the output voltage.
Dependencies are inferred from the claim text.