Digital demodulating apparatus and controlling method thereof
First Claim
1. A digital demodulating apparatus comprising:
- a plurality of circuit elements constituting a receiving unit and a demodulating unit that demodulates a signal received by the receiving unit;
a supplying unit that supplies power to each circuit element;
a correcting unit that corrects errors due to noises generated on a transmission path of the received signal;
a calculating unit that calculates a value indicating the quantity of noises contained in the signal when the correcting unit corrects the errors;
a judging unit that judges whether or not reception conditions of the received signal are good in a predetermined time period, on the basis of values repeatedly calculated by the calculating unit in the predetermined time period after a value calculated by the calculating unit indicates that the noises have become not more than a predetermined reference quantity; and
a reducing unit that reduces the power to be supplied to each circuit element by the supplying unit, when the judging unit decides that the reception conditions are good.
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Accused Products
Abstract
A digital demodulating apparatus includes a supplying unit that supplies power to each of circuit elements constituting a receiving unit that receives a signal, and a demodulating unit that demodulates the received signal. The apparatus further includes a correcting unit that corrects errors due to noises generated on a transmission path of the received signal; a calculating unit that calculates a value indicating the quantity of noises contained in the signal when the correcting unit corrects the errors; a judging unit that judges whether or not reception conditions of the received signal are good in a predetermined time period, based on values calculated by the calculating unit; and a reducing unit that reduces the power to be supplied to each circuit element by the supplying unit, when the judging unit decides that the reception conditions are good. The judging unit judges the reception conditions based on values repeatedly calculated by the calculating unit in the predetermined time period after a value calculated by the calculating unit indicates that the noises have become not more than a predetermined reference quantity.
14 Citations
6 Claims
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1. A digital demodulating apparatus comprising:
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a plurality of circuit elements constituting a receiving unit and a demodulating unit that demodulates a signal received by the receiving unit; a supplying unit that supplies power to each circuit element; a correcting unit that corrects errors due to noises generated on a transmission path of the received signal; a calculating unit that calculates a value indicating the quantity of noises contained in the signal when the correcting unit corrects the errors; a judging unit that judges whether or not reception conditions of the received signal are good in a predetermined time period, on the basis of values repeatedly calculated by the calculating unit in the predetermined time period after a value calculated by the calculating unit indicates that the noises have become not more than a predetermined reference quantity; and a reducing unit that reduces the power to be supplied to each circuit element by the supplying unit, when the judging unit decides that the reception conditions are good. - View Dependent Claims (2, 3, 4, 5)
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6. A controlling method of a digital demodulating apparatus comprising a plurality of circuit elements constituting a receiving unit and a demodulating unit that demodulates a signal received by the receiving unit;
- and a supplying unit that supplies power to each circuit element, the method comprising;
a correcting step of correcting errors due to noises generated on a transmission path of the received signal; a calculating step of calculating a value indicating the quantity of noises contained in the signal when the errors are corrected in the correcting step; a judging step of judging whether or not reception conditions of the received signal are good in a predetermined time period, on the basis of values repeatedly calculated in the calculating step in the predetermined time period after a value calculated in the calculating step indicates that the noises have become not more than a predetermined reference quantity; and a reducing step of reducing the power to be supplied to each circuit element by the supplying unit, when it is decided in the judging step that the reception conditions are good.
- and a supplying unit that supplies power to each circuit element, the method comprising;
Specification