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US 7,149,152 B1Granted
Projection clock
AssigneeIDT Technology Limited
InventorRaymond Chan
Life of this patent
Estimating the term…
Abstract
A projection clock includes a base unit that includes a power supply, a clock circuit powered by the power supply, and a wireless transmitter for wirelessly transmitting time information provided by the clock circuit. Also, a projection unit, separate from the base unit, includes a projection circuit and a wireless receiver for wirelessly receiving the transmitted time information, based on which the projection circuit operatively projects the time.
Claims15
A projection clock comprising:
- a base unit including power supply means, a clock circuit powered by way of the power supply means, and a wireless transmitter for wirelessly transmitting time information, including time, provided by the clock circuit;
- and
- a projection unit separate from the base unit, including a projection circuit and a wireless receiver for wirelessly receiving the time information, based on which the projection circuit operatively projects the time onto an external surface that is not a part of said base unit or said projection unit.
Dependencies are inferred from the claim text.