Power standby mode circuitry for audiovisual device
First Claim
1. Low power standby circuitry comprising:
- signal reception means (42);
means for decoding a signal received by the signal reception means;
a system-on-chip (82) incorporating a main micro-controller (88;
164); and
a delegate micro-controller (90;
140) included on a same integrated circuit package as the main micro-controller for controlling a voltage supply to at least part of a system-on-chip (82) upon receipt of a validated signal.
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Accused Products
Abstract
The problem of increased power consumption due to infrared remote control false alarm handling by a main TV controller (88) and power dissipation due to leakage current is addressed by fully delegating standby tasks to a low power delegate controller (90) with minimal local resources and having high performance and many dissipating system parts disabled. In low power standby mode the delegate controller (90) validates autonomously a remote control (42) command, a keypad (34) press, a timer alarm, and external interrupt etc. The TV system is powered up only when a command is valid. Use of a switched power supply voltage (70) reduces the leakage current problem. The delegate micro-controller is included on the same integrated circuit (IC) package as the main micro-controller, advantageously on the same IC die.
56 Citations
10 Claims
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1. Low power standby circuitry comprising:
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signal reception means (42);
means for decoding a signal received by the signal reception means;
a system-on-chip (82) incorporating a main micro-controller (88;
164); and
a delegate micro-controller (90;
140) included on a same integrated circuit package as the main micro-controller for controlling a voltage supply to at least part of a system-on-chip (82) upon receipt of a validated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification