Event triggering method, system, and computer program product
OwnerCheng-Han WU, Wen-Tang Chen +1inventors
InventorsCheng-Han WU, Wen-Tang Chen, Chung-Wen Liao
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Abstract
An event triggering method, system, and computer program product are provided, in which an optical spot trajectory tracking is utilized. Firstly, a cursor at a position on the surface of a screen is moved to a preset position through a first optical spot, then, the projecting of the first optical spot is stopped. Next, it is determined whether the preset position is a preset position of a command. Then, a second optical spot is projected to generate a light-triggered signal, and then a processing unit executes the command according to the light-triggered signal.
Claims13
An event triggering method by using an optical spot trajectory tracking, comprising:
- projecting a first optical spot by a photoelectric indicator unit at a position on a surface;
- moving the first optical spot to a preset position by the photoelectric indicator unit;
- sensing an optical signal of the first optical spot at the preset position by an optical sensing unit;
- calculating a coordinate value of the preset position according to the first optical signal, and generating a first control signal by a processing unit, and then stopping projection of the first optical spot;
- determining whether the preset position is a preset position of a command;
- projecting a second optical spot by the photoelectric indicator unit on the surface;
- making the second optical spot to generate a light-triggered signal by the photoelectric indicator unit;
- receiving the light-triggered signal by the optical sensing unit;
- and
- executing the command according to the light-triggered signal by the processing unit.
An event triggering system by using an optical spot trajectory tracking, comprising:
- a projection display unit;
- a photoelectric indicator unit, for outputting a first optical spot and a second optical spot, wherein the first optical spot is projected onto the projection display unit, the first optical spot is moved to a preset position of a command to generate an optical signal, and the photoelectric indicator unit makes the second optical spot to generate a light-triggered signal;
- an optical sensing unit, for sensing the first optical signal of the first optical spot and the light-triggered signal of the second optical spot;
- and
- a processing unit, connected with an output end of the optical sensing unit, so as to generate a control signal according to a coordinate value of the first optical signal of the first optical spot, and execute the command according to the light-triggered signal of the second optical spot.
An computer program product for triggering an event by using an optical spot trajectory tracking, being loaded into a computer to execute following steps of triggering an event by using an optical spot trajectory tracking:
- projecting a first optical spot by a photoelectric indicator unit on a surface;
- moving the first optical spot to a preset position on the surface by the photoelectric indicator unit;
- sensing an optical signal of the first optical spot at the preset position by an optical sensing unit;
- calculating a coordinate value of the preset position according to the first optical signal, and generating a first control signal by a processing unit, and then stopping outputting the first optical spot;
- determining whether the preset position is a preset position of a command;
- projecting a second optical spot by the photoelectric indicator unit on the surface;
- making the second optical spot to generate a light-triggered signal by the photoelectric indicator unit;
- receiving the light-triggered signal by the optical sensing unit;
- and
- executing the command according to the light-triggered signal by the processing unit.
Dependencies are inferred from the claim text.