Digital demodulating apparatus, controlling method of the apparatus, computer program product for the apparatus, recording medium recording thereon the product, and digital receiver
First Claim
1. A digital demodulating apparatus comprising:
- a plurality of circuit elements constituting a tuner that performs channel select processing to a received signal that has been interleaved, and a demodulator that performs demodulation processing to the received signal from the tuner;
a deinterleaving section that performs deinterleave processing to the interleaved received signal from the tuner;
an error correcting section that corrects errors included in the received signal that has been deinterleaved by the deinterleaving section; and
a circuit element controlling section that controls an operation of at least one of the plurality of circuit elements,the circuit element controlling section estimating the quantity of hypothetical errors to be generated in the received signal due to a control of an operation of a circuit element,the circuit element controlling section judging from the estimated quantity of hypothetical errors whether or not the error correcting section can correct errors to be included in the received signal due to the control of the operation of the circuit element,the circuit element controlling section controlling the operation of the circuit element so as to decrease the quantity of errors to be generated in the received signal due to the control of the operation of the circuit element, when the circuit element controlling section has decided that the error correcting section can not correct the errors to be included in the received signal.
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Accused Products
Abstract
A digital demodulating apparatus comprises circuit elements constituting a tuner that performs channel select processing to an interleaved received signal, and a demodulator that demodulates the received signal; a deinterleaving section that deinterleaves the interleaved received signal; an error correcting section that corrects errors in the received signal deinterleaved by the deinterleaving section; and a circuit element controlling section that controls an operation of at least one of the circuit elements. The circuit element controlling section estimates the quantity of hypothetical errors in the received signal caused by a control of a circuit element. The circuit element controlling section judges from the estimated quantity of hypothetical errors whether the error correcting section can correct errors in the received signal caused by the control of the circuit element. The circuit element controlling section controls the circuit element so as to decrease the quantity of errors in the received signal caused by the control of the circuit element, when the circuit element controlling section decided that the error correcting section can not correct the errors in the received signal.
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Citations
28 Claims
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1. A digital demodulating apparatus comprising:
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a plurality of circuit elements constituting a tuner that performs channel select processing to a received signal that has been interleaved, and a demodulator that performs demodulation processing to the received signal from the tuner; a deinterleaving section that performs deinterleave processing to the interleaved received signal from the tuner; an error correcting section that corrects errors included in the received signal that has been deinterleaved by the deinterleaving section; and a circuit element controlling section that controls an operation of at least one of the plurality of circuit elements, the circuit element controlling section estimating the quantity of hypothetical errors to be generated in the received signal due to a control of an operation of a circuit element, the circuit element controlling section judging from the estimated quantity of hypothetical errors whether or not the error correcting section can correct errors to be included in the received signal due to the control of the operation of the circuit element, the circuit element controlling section controlling the operation of the circuit element so as to decrease the quantity of errors to be generated in the received signal due to the control of the operation of the circuit element, when the circuit element controlling section has decided that the error correcting section can not correct the errors to be included in the received signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A controlling method of a digital demodulating apparatus comprising a plurality of circuit elements constituting a tuner that performs channel select processing to a received signal that has been interleaved, and a demodulator that performs demodulation processing to the received signal from the tuner;
- a deinterleaving section that performs deinterleave processing to the interleaved received signal from the tuner;
an error correcting section that corrects errors included in the received signal that has been deinterleaved by the deinterleaving section; and
a circuit element controlling section that controls an operation of at least one of the plurality of circuit elements,the method comprising; an estimating step of estimating the quantity of hypothetical errors to be generated in the received signal due to a control of an operation of a circuit element by the circuit element controlling section; a correction possibility judging step of judging from the quantity of hypothetical errors estimated in the estimating step whether or not the error correcting section can correct errors to be included in the received signal due to the control of the operation of the circuit element by the circuit element controlling section; and a circuit element controlling step of allowing the circuit element controlling section to control the operation of the circuit element so as to decrease the quantity of errors to be generated in the received signal due to the control of the operation of the circuit element by the circuit element controlling section, when it was decided in the correction possibility judging step that the error correcting section can not correct errors to be included in the received signal. - View Dependent Claims (25, 26)
- a deinterleaving section that performs deinterleave processing to the interleaved received signal from the tuner;
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27. A computer-readable recording medium recording thereon a computer program product for a digital demodulating apparatus comprising a plurality of circuit elements constituting a tuner that performs channel select processing to a received signal that has been interleaved, and a demodulator that performs demodulation processing to the received signal from the tuner;
- a deinterleaving section that performs deinterleave processing to the interleaved received signal from the tuner;
an error correcting section that corrects errors included in the received signal that has been deinterleaved by the deinterleaving section; and
a circuit element controlling section that controls an operation of at least one of the plurality of circuit elements,the product causing the apparatus to perform; an estimating step of estimating the quantity of hypothetical errors to be generated in the received signal due to a control of an operation of a circuit element by the circuit element controlling section; a correction possibility judging step of judging from the quantity of hypothetical errors estimated in the estimating step whether or not the error correcting section can correct errors to be included in the received signal due to the control of the operation of the circuit element by the circuit element controlling section; and a circuit element controlling step of allowing the circuit element controlling section to control the operation of the circuit element so as to decrease the quantity of errors to be generated in the received signal due to the control of the operation of the circuit element by the circuit element controlling section, when it was decided in the correction possibility judging step that the error correcting section can not correct errors to be included in the received signal.
- a deinterleaving section that performs deinterleave processing to the interleaved received signal from the tuner;
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28. A digital receiver comprising a digital demodulating apparatus comprising:
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a plurality of circuit elements constituting a tuner that performs channel select processing to a received signal that has been interleaved, and a demodulator that performs demodulation processing to the received signal from the tuner; a deinterleaving section that performs deinterleave processing to the interleaved received signal from the tuner; an error correcting section that corrects errors included in the received signal that has been deinterleaved by the deinterleaving section; and a circuit element controlling section that controls an operation of at least one of the plurality of circuit elements, the circuit element controlling section estimating the quantity of hypothetical errors to be generated in the received signal due to a control of an operation of a circuit element, the circuit element controlling section judging from the estimated quantity of hypothetical errors whether or not the error correcting section can correct errors to be included in the received signal due to the control of the operation of the circuit element, the circuit element controlling section controlling the operation of the circuit element so as to decrease the quantity of errors to be generated in the received signal due to the control of the operation of the circuit element, when the circuit element controlling section has decided that the error correcting section can not correct the errors to be included in the received signal, the receiver performing reproduction processing to at least one of character data, image data, audio data, and program data, on the basis of the received signal demodulated by the digital demodulating apparatus.
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Specification