Tuner power dissipation reduction in a standby mode
First Claim
1. A television signal processing apparatus comprising:
- a first tuner for tuning a first signal when said television signal processing apparatus is in a first mode of operation and where power is removed from said first tuning means during a second mode of operation;
a second tuner for tuning a second signal when said television signal processing apparatus is in a first mode of operation and a second mode of operation, wherein power is applied for a portion of the time said television signal processing apparatus is in said second mode of operation; and
said portion of the time said television signal processing apparatus is in said second mode of operation is less than 100 percent of the time said television signal processing apparatus is in said second mode of operation.
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Accused Products
Abstract
An apparatus such as a television signal processing apparatus provides a means to control power dissipation by high speed signal processing circuitry associated with tuners while continuing to receive auxiliary data such as administrative data, guide data, or emergency alert notifications. According to an exemplary embodiment, the television signal processing apparatus comprises a first tuner for tuning a first signal when the television signal processing apparatus is in a first mode of operation and where power is removed from the first tuner during a second mode of operation, a second tuner for tuning a second signal when the television signal processing apparatus is in a first mode of operation and a second mode of operation, wherein power is applied to the second tuner for a portion of the time the television signal processing apparatus is in the second mode of operation and the portion of the time the television signal processing apparatus is in the second mode of operation is less than percent of the time the television signal processing apparatus is in the second mode of operation.
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Citations
22 Claims
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1. A television signal processing apparatus comprising:
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a first tuner for tuning a first signal when said television signal processing apparatus is in a first mode of operation and where power is removed from said first tuning means during a second mode of operation;
a second tuner for tuning a second signal when said television signal processing apparatus is in a first mode of operation and a second mode of operation, wherein power is applied for a portion of the time said television signal processing apparatus is in said second mode of operation; and
said portion of the time said television signal processing apparatus is in said second mode of operation is less than 100 percent of the time said television signal processing apparatus is in said second mode of operation. - View Dependent Claims (2, 3, 4)
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5. An apparatus comprising:
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a tuner;
a source of operating power; and
a controller for causing the operating power to be applied to the tuner during a normal mode of operation of the apparatus and during a first portion of a standby mode of operation, and for causing the operating power to be removed from the tuner during a second portion of the standby mode of operation. - View Dependent Claims (6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a control means;
a tuner; and
a power supply for applying power to said tuner in a portion of a standby mode in response to a signal from said control means. - View Dependent Claims (12, 13, 14, 15, 16)
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17. Signal processing apparatus having a normal mode of operation and having a standby mode of operation and comprising:
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a tuner for selecting a signal;
a power supply for applying power to the tuner responsive to a control signal; and
a controller for generating the control signal in response to a parameter of the signal processing apparatus for causing the power supply to apply power to the tuner during the normal mode of operation and during a first portion of the standby mode of operation and for causing the power supply to remove power from the tuner during a second portion of the standby mode of operation.
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18. A method for controlling power dissipation in a signal processing apparatus comprising the steps of:
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applying power to a tuner in a first mode of operation; and
applying power to said tuner during a portion of a second mode of operation and removing power during the remainder of said second mode of operation. - View Dependent Claims (19, 20, 21, 22)
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Specification