Audio peripheral device having controller for power management
AssigneeAdvanced Micro Devices, Inc.
InventorDale A. Gulick
Life of this patent
Estimating the term…
Abstract
A controller for a powered loudspeaker for use in a computer system including a bus monitor configured to monitor a bus for predetermined activity and a power management control unit coupled to the bus monitor. The controller is configured to turn off power supplied to the powered loudspeaker responsive to an absence of predetermined activity on said bus. After a predetermined interval, or upon detection of restoration of activity, the power is turned back on.
Claims23
A powered speaker or microphone peripheral device coupled to a computer system by a bus, the peripheral device comprising:
- a speaker or microphone;
- and
- a control unit configured to control power to said speaker or microphone, said control unit comprising a bus monitor configured to monitor the bus for a predetermined activity and to shut off power supplied to said speaker or microphone after said bus monitor has detected an absence of said predetermined activity on the bus.
A powered speaker peripheral device, comprising:
- a powered speaker;
- a speaker controller configured to receive signals on a bus coupled to said peripheral device, wherein said speaker controller is further configured to monitor said bus and to shut off power to said powered speaker after detecting bus activity below a predetermined threshold for a predetermined period of time;
- and
- said speaker controller further configured to ramp down the powered speaker's volume before shutting off power to said powered speaker.
A microphone peripheral device, comprising:
- a microphone;
- a control unit configured to receive signals on a bus coupled to said peripheral device, wherein said control unit is furtherer configured to monitor said bus and to shut off power to said microphone after detecting bus activity below a predetermined threshold for a predetermined period of time;
- and
- said control unit further configured to monitor an audio input from said microphone for activity and to restore power to said microphone in response to detecting a predetermined level of activity on said audio input for a predetermined duration.
Dependencies are inferred from the claim text.