BROADCAST RECEIVING APPARATUS
First Claim
1. A broadcast receiving apparatus having a seek function of sweeping a received frequency, stopping the sweeping if the level of the received signal is equal to or higher than a first level, and setting a reception state with the received frequency, the apparatus comprising:
- a signal meter configured to detect the level of the received signal; and
an AGC circuit configured to control the level of the received signal with the field strength of an input signal, wherein, if the field strength of the input signal is equal to or higher than a second level, the value of the first level is changed to a lower value under a state where the AGC circuit is operating.
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Accused Products
Abstract
A broadcast receiving apparatus having a seek function of sweeping a received frequency, stopping the sweeping if the level of the received signal is equal to or higher than a threshold level of an S meter signal in SD check (SD check results in H determination), and setting a reception state with the received frequency includes a signal meter configured to detect the level of the received signal, and an AGC circuit configured to control the level of the received signal with the field strength of an input signal. In this case, if the direct current value to be applied to the PIN diode is equal to or higher than a predetermined direct current value, the threshold level of the S meter signal is changed to a lower value under a state where the AGC circuit is operating because a neighboring interfering channel exists.
6 Citations
5 Claims
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1. A broadcast receiving apparatus having a seek function of sweeping a received frequency, stopping the sweeping if the level of the received signal is equal to or higher than a first level, and setting a reception state with the received frequency, the apparatus comprising:
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a signal meter configured to detect the level of the received signal; and an AGC circuit configured to control the level of the received signal with the field strength of an input signal, wherein, if the field strength of the input signal is equal to or higher than a second level, the value of the first level is changed to a lower value under a state where the AGC circuit is operating. - View Dependent Claims (2, 3, 4, 5)
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Specification
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- Resources
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Current AssigneeALPS Electric Company Limited (Alps Alpine Co., Ltd.)
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Original AssigneeALPS Electric Company Limited (Alps Alpine Co., Ltd.)
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InventorsTominaga, Atsushi, Aoyagi, Daisuke
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Application NumberUS13/345,016Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current455/234.1CPC Class CodesH03J 1/0066 with means for analysing th...
