System for managing power of peripheral communications by automatically closing communications channel immediately after finishing a communication with a peripheral device
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United States of America Patent
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Jan 21, 2003
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N/A
app pub date -
Aug 23, 1999
filing date -
Aug 23, 1999
priority date (Note) -
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Abstract
An improved method and apparatus manages communications port contention and power consumption for a handheld computer, particularly handheld computers with a communications protocol that boosts power consumption when active, such as an RS-232 protocol. The improved method provides communications channel management that automatically opens the communications channel in response to a wake-up signal sent to a handheld computer from a peripheral device. The computer peripheral device is explicitly and/or implicitly identified. The opened communications channel is closed in response to receiving some data from the peripheral device, and/or after a device timeout expires without the handheld computer receiving data from the computer peripheral device.
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