RECEIVING DEVICE
First Claim
Patent Images
1. A receiving apparatus comprising:
- a receiver capable of switching between;
a high-sensitivity mode;
a power-saving mode having a reception sensitivity lower than that in the high-sensitivity mode; and
an intermediate reception mode having a reception sensitivity lower than that in the high-sensitivity mode and higher than that in the power-saving mode;
a reception environment acquiring unit for acquiring a reception environment and connected to an output side of the receiver; and
a controller for switching the receiver to the intermediate reception mode, in a case where the receiver is in the high-sensitivity mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the high-sensitivity mode; and
switching the receiver to the power-saving mode, in a case where the receiver is in the intermediate reception mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the intermediate reception mode.
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Abstract
When performing switching control of reception modes trading off reception sensitivity against power consumption in a reception environment, the receiving apparatus and control method of the present invention perform state transition without a reception error occurring due to switching control with the aid of a reception mode in which an intermediate reception performance is provided. The present invention is particularly useful to balance the reception performance with the battery duration in a battery-powered, portable receiving terminal such as a television receiver for a mobile terminal.
23 Citations
44 Claims
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1. A receiving apparatus comprising:
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a receiver capable of switching between; a high-sensitivity mode; a power-saving mode having a reception sensitivity lower than that in the high-sensitivity mode; and an intermediate reception mode having a reception sensitivity lower than that in the high-sensitivity mode and higher than that in the power-saving mode; a reception environment acquiring unit for acquiring a reception environment and connected to an output side of the receiver; and a controller for switching the receiver to the intermediate reception mode, in a case where the receiver is in the high-sensitivity mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the high-sensitivity mode; and switching the receiver to the power-saving mode, in a case where the receiver is in the intermediate reception mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the intermediate reception mode. - View Dependent Claims (2, 3, 4, 5, 16, 17, 32, 33, 34, 43)
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6. A receiving apparatus comprising:
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a receiver including a first receiver and a second receiver, capable of switching between; a diversity reception mode in which a signal is received with the first receiver and the second receiver; a single reception mode in which a signal is received with either one of the first receiver and the second receiver; and an intermediate reception mode having a reception sensitivity lower than that in the diversity reception mode and higher than that in the single reception mode; a reception environment acquiring unit for acquiring a reception environment and connected to an output side of the receiver; and a controller for switching the receiver to the intermediate reception mode, in a case where the receiver is in the diversity reception mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the diversity reception mode; and switching the receiver to the single reception mode in a case where the receiver is in the intermediate reception mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the intermediate reception mode. - View Dependent Claims (7, 8, 9, 10, 18, 35, 36, 37, 41, 44)
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11. A receiving apparatus comprising:
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a receiver capable of switching between a first reception mode, a third reception mode in which the receiving apparatus operates with an operation power lower than that in the first reception mode, and a second reception mode in which the receiving apparatus operates with an operation power lower than that in the first reception mode and higher than that in the third reception mode; a reception environment acquiring unit for acquiring a reception environment and connected to an output side of the receiver; and a controller for switching the receiver to the second reception mode, in a case where the receiver is in the first reception mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the first reception mode; and switching the receiver to the third reception mode, in a case where the receiver is in the second reception mode, when a reception environment acquired by the reception environment acquiring unit becomes better than a release threshold in the second reception mode. - View Dependent Claims (12, 13, 14, 15, 38, 39, 40, 42)
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19. A digital broadcast receiving apparatus comprising:
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a receiver capable of switching between a high-sensitivity mode and a low-sensitivity mode having a reception sensitivity lower than that in the high-sensitivity mode; a reception environment acquiring unit for acquiring an error rate of a reception signal and connected to an output side of the receiver; and a controller for switching the receiver to the low-sensitivity mode, in a case where the receiver is in the high-sensitivity mode, when an error rate of a reception signal acquired by the reception environment acquiring unit becomes lower than a release threshold; and switching the receiver to the high-sensitivity mode, in a case where the receiver is in the low-sensitivity mode, when an error rate of a reception signal acquired by the reception environment acquiring unit becomes higher than a start-up threshold higher than the release threshold, wherein an input level at which switching is performed from the low-sensitivity mode to the high-sensitivity mode is lower than that from the high-sensitivity mode to the low-sensitivity mode. - View Dependent Claims (20, 21, 22, 31)
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23. A digital broadcast receiving apparatus comprising:
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a receiver including a first receiver and a second receiver, capable of switching between; a diversity reception mode in which a signal is received with the first receiver and the second receiver; a single reception mode in which a signal is received with either one of the first receiver and the second receiver; and an intermediate mode having a reception sensitivity lower than that in the diversity reception mode and higher than that in the single reception mode; a reception environment acquiring unit for acquiring an error rate of a reception signal and connected to an output side of the receiver; and a controller for switching the receiver to the intermediate mode, in a case where the receiver is in the diversity mode, when an error rate of a reception signal acquired by the reception environment acquiring unit becomes lower than a release threshold; and switching the receiver to the diversity mode in a case where the receiver is in the intermediate mode, when an error rate of a reception signal acquired by the reception environment acquiring unit becomes higher than a start-up threshold higher than the release threshold, wherein an input level at which switching is performed from the intermediate mode to the diversity reception mode is lower than that from the diversity reception mode to the intermediate mode. - View Dependent Claims (24, 25, 26)
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27. A digital broadcast receiving apparatus comprising:
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a receiver capable of switching between; a first reception mode; a third reception mode in which the receiving apparatus operates with an operation power lower than that in the first reception mode; and a second reception mode in which the receiving apparatus operates with an operation power lower than that in the first reception mode and higher than that in the third reception mode; a reception environment acquiring unit for acquiring an error rate of a reception signal and connected to an output side of the receiver; and a controller for switching the receiver to the second reception mode, in a case where the receiver is in the first reception mode, when an error rate of a reception signal acquired by the reception environment acquiring unit becomes lower than a release threshold; and switching the receiver to the first reception mode in a case where the receiver is in the second reception mode, when an error rate of a reception signal acquired by the reception environment acquiring unit becomes higher than a start-up threshold higher than the release threshold, wherein an input level at which switching is performed from the second reception mode to the first reception mode is lower than that from the first reception mode to the intermediate mode. - View Dependent Claims (28, 29, 30)
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Specification