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US 10,951,948 B2Granted
Signal processing apparatus and method
AssigneeSony Corporation
InventorTatsuki Amimoto
Life of this patent
Estimating the term…
Abstract
The present technique relates to signal processing apparatus and method that can reduce power consumption. A receiver that receives a broadcast signal includes a demodulation unit that demodulates the broadcast signal, and a reception control unit that controls the demodulation by the demodulation unit. In a section not including PLPs to be received in the broadcast signal, the reception control unit controls the demodulation unit to stop the demodulation by the demodulation unit on the basis of subframes or OFDM symbols. The present technique can be applied to a receiver.
Claims14
A signal processing apparatus, comprising:
- a central processing unit (CPU) configured to:
- demodulate a received signal including a plurality of pieces of multiplexed data, wherein the received signal comprises a frame, the frame comprises a plurality of subframes, and at least one subframe of the plurality of subframes is divided into a plurality of subsections based on Orthogonal Frequency Division Multiplexing (OFDM) symbols;
- determine at least one first subsection of the plurality of subsections for which demodulation is to be stopped, wherein the determination is based on signaling information that indicates that the at least one first subsection does not include data to be received by the signal processing apparatus;
- stop the demodulation in the at least one first subsection of the plurality of subsections based on the determination;
- continue demodulation in at least one second subsection of the plurality of subsections, wherein
- the at least one second subsection of the plurality of subsections includes the data to be received by the signal processing apparatus;
- execute a demodulation preliminary operation in at least one third subsection, wherein the demodulation preliminary operation comprises at least one of:
- correction of a phase error of the received signal, or
- estimation of transmission path characteristics of the received signal, wherein the at least one third subsection is in front of the at least one second subsection in which the demodulation is continued;
- and
- set a demodulation preliminary mode in the at least one first subsection in which the demodulation is stopped, such that a length of the demodulation preliminary operation is increased, wherein the demodulation preliminary mode is set in the at least one first subsection based on at least one of the estimation of the transmission path characteristics or an estimation result of noise included in the received signal.
8 more elements
A signal processing method, comprising:
- demodulating a received signal including a plurality of pieces of multiplexed data, wherein the received signal comprises a frame, and the frame comprises a plurality of subframes, and at least one subframe of the plurality of subframes is divided into a plurality of subsections based on Orthogonal Frequency Division Multiplexing (OFDM) symbols;
- determining at least one first subsection of the plurality of subsections for which demodulation is to be stopped, wherein the determination is based on signaling information that indicates that the at least one first subsection does not include data to be received by a signal processing apparatus;
- stopping the demodulation in the at least one first subsection of the plurality of subsections based on the determination;
- continuing the demodulation in at least one second subsection of the plurality of subsections, wherein
- the at least one second subsection of the plurality of subsections includes the data to be received by the signal processing apparatus;
- executing a demodulation preliminary operation in at least one third subsection, wherein the demodulation preliminary operation comprises at least one of:
- correction of a phase error of the received signal, or
- estimation of transmission path characteristics of the received signal, wherein the at least one third subsection is in front of the at least one second subsection in which the demodulation is continued;
- and
- setting a demodulation preliminary mode in the at least one first subsection in which the demodulation is stopped, such that a length of the demodulation preliminary operation is increased, wherein the demodulation preliminary mode is set in the at least one first subsection based on at least one of the estimation of the transmission path characteristics or an estimation result of noise included in the received signal.
7 more elements
A non-transitory computer-readable medium having stored thereon computer-executable instructions that, when executed by a computer, cause the computer to execute operations, the operations comprising:
- demodulating a received signal including a plurality of pieces of multiplexed data, wherein the received signal comprises a frame, and the frame comprises a plurality of subframes, and at least one subframe of the plurality of subframes is divided into a plurality of subsections based on Orthogonal Frequency Division Multiplexing (OFDM) symbols;
- determining at least one first subsection of the plurality of subsections for which demodulation is to be stopped, wherein the determination is based on signaling information that indicates that the at least one first subsection does not include data to be received by a signal processing apparatus;
- stopping the demodulation in the at least one first subsection of the plurality of subsections based on the determination;
- continuing the demodulation in at least one second subsection of the plurality of subsections, wherein
- the at least one second subsection of the plurality of subsections includes the data to be received by the signal processing apparatus;
- executing a demodulation preliminary operation in at least one third subsection, wherein the demodulation preliminary operation comprises at least one of:
- correction of a phase error of the received signal, or
- estimation of transmission path characteristics of the received signal, wherein the at least one third subsection is in front of the at least one second subsection in which the demodulation is continued;
- and
- setting a demodulation preliminary mode in the at least one first subsection in which the demodulation is stopped, such that a length of the demodulation preliminary operation is increased, wherein the demodulation preliminary mode is set in the at least one first subsection based on at least one of the estimation of the transmission path characteristics or an estimation result of noise included in the received signal.
7 more elements
Dependencies are inferred from the claim text.