Receiver
OwnerTsuyoshi Koike, Hiroshi Miyagiinventors
Life of this patent
Estimating the term…
Abstract
The time constant of an HCC de-emphasis circuit 15, which is connected in the stage following a stereo demodulator circuit 14 for demodulating a received signal and which has both a high-cut control function and a de-emphasis function, is made variable based on the reception level.
Claims9
A receiver which is connected in the stage following a high frequency demodulator circuit for demodulating a received signal and which has both a high-cut control function and a de-emphasis function is made variable based on the reception level.
A receiver, comprising:
- a demodulation unit for demodulating a received signal;
- an attenuation unit which is connected in the stage following the demodulation unit and which attenuates the high frequency component of a received signal;
- a variable unit for making the cut-off frequency of the attenuation unit variable;
- and
- a generation unit for generating a control signal for controlling the operation of the variable unit based on the reception level of the received signal.
A receiver, comprising:
- a demodulation unit for demodulating a FM reception signal;
- a resistor consisting of two or more resistors connected in the stage following the demodulation unit;
- a changeover unit for changing over the resistance value of the resistors;
- a capacitor which attenuates the high frequency component of the demodulated FM signal in combination with the resistors;
- and
- a generation unit for generating a control signal for controlling the changeover operation of the changeover unit based on the reception level of the FM signal.
A receiver which receives an FM signal or an AM signal, further comprising:
- a demodulation unit for demodulating the FM signal or the AM signal;
- a resistor consisting of two or more resistors connected in the stage following the demodulation unit;
- a changeover unit for changing over the resistance value of the resistor;
- a capacitor which attenuates the high frequency component of the demodulated FM signal or AM signal in combination with the resistors;
- a first generation unit for generating a control signal for controlling the changeover operation of the changeover unit based on the reception level of the FM signal;
- a second generation unit for generating a control signal for AM for controlling the changeover operation of the changeover unit based on the reception level of the AM signal;
- and
- a selection unit for selecting either the control signal or the control signal for AM based on a received signal and outputting the selected signal to the changeover unit.
Dependencies are inferred from the claim text.