Method for controlling power to individual audio-video units making up an audio-video system
AssigneeSony Corporation
InventorShigeo Tanaka
Life of this patent
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Abstract
A power controlling apparatus turns off a power to an apparatus whose connection to a central apparatus has been cut by a connection change, thus selectively turning off a power to an apparatus not required by the central apparatus. A locking/unlocking apparatus determines a value of the locking timer in the interrupt timer routine and, when the value has exceeded a predetermined level, takes a slave apparatus out of the locked state, thereby simplifying programming.
Claims4
A method for use in an audio-video control center for controlling a power to an audio-video apparatus unit that is one of a plurality of audio-video apparatus units connected to the control center in an audio-video system, comprising the steps of:
- determining whether a command has come from one of said plurality of audio-video apparatus units;
- if it was determined that a command has come, determining whether said command is a connection command;
- if it was determined that said command is a connection command, determining whether said connection command is for connection to one of said plurality of audio-video apparatus units making up the audio-video system;
- if said connection command is for connection to said one of said plurality of audio-video apparatus units, determining whether said connection is to the same unit that received a previous connection command;
- if said connection is not the same as the previous connection, clearing the previous connection and setting a new one;
- counting a predetermined period of time after said previous connection is cleared and a new connection is set;
- and
- when said predetermined period of time has passed, sending a power-off command to said audio-video apparatus unit that received the previous connection command to turn off the power thereto.
Dependencies are inferred from the claim text.