초록 ▼

Emitters and detectors are positioned in proximity to a display screen. Emitters emit energy beams that are diverged across the surface of the display screen. Emitters may be activated/deactivated in sequence, rapid enough to substantially ensure that several energy beams are interrupted by a touch

Emitters and detectors are positioned in proximity to a display screen. Emitters emit energy beams that are diverged across the surface of the display screen. Emitters may be activated/deactivated in sequence, rapid enough to substantially ensure that several energy beams are interrupted by a touch of the display screen. Detectors receive energy beams over a range of angles and generate detection signals upon detecting energy beams. Detection maps are generated based on detection signals. Detection maps indicate which detector should receive an energy beam from which emitter at any point in time. Detections maps are compared to determine that energy beams have been interrupted by a touch. Based on the interrupted energy beams, the location of the touch on the display screen may be determined. The invention serves to reduce the number of emitters and detectors required in a touch panel display system and/or increase the sensitivity and accuracy thereof.

대표청구항 ▼

Emitters and detectors are positioned in proximity to a display screen. Emitters emit energy beams that are diverged across the surface of the display screen. Emitters may be activated/deactivated in sequence, rapid enough to substantially ensure that several energy beams are interrupted by a touch

Emitters and detectors are positioned in proximity to a display screen. Emitters emit energy beams that are diverged across the surface of the display screen. Emitters may be activated/deactivated in sequence, rapid enough to substantially ensure that several energy beams are interrupted by a touch of the display screen. Detectors receive energy beams over a range of angles and generate detection signals upon detecting energy beams. Detection maps are generated based on detection signals. Detection maps indicate which detector should receive an energy beam from which emitter at any point in time. Detections maps are compared to determine that energy beams have been interrupted by a touch. Based on the interrupted energy beams, the location of the touch on the display screen may be determined. The invention serves to reduce the number of emitters and detectors required in a touch panel display system and/or increase the sensitivity and accuracy thereof. ctor is arranged in said recess, and electric connection between said first and second signal connectors are achieved once said mouse device is placed into said recess. 5. A multi-mode input control device for use with a computer via a graphic user interface, comprising: a touch pad for generating a first cursor movement control signal according to a user's touch motion thereon; a first signal connector electrically connected to said touch pad for transmitting said first cursor movement control signal; a base housing mounted thereon said touch pad and said first signal connector; and a mouse device connected to said computer via a signal channel, performing a shift motion in response to a second external force, and including: a mouse sensor for generating said second cursor movement control signal according to said shift motion; a switching device electrically connected to said mouse sensor and said second signal connector for allowing either of said first and second cursor movement control signals to pass through said signal channel; a key switch for entering a command to said computer by exerting thereon a third external force so as to generate an input signal; a control unit electrically connected to said switching device and said key switch for processing said first and second cursor movement control signals and said input signal; an interface circuit electrically connected to said control unit and said signal channel for transforming said first and second cursor movement control signals and said input signal into a designated format suitable for transmission to said computer; a mouse housing accommodated therein said mouse sensor, said switching device, said control unit and said interface circuit, and mounted thereon said second signal connector and said key switch; and a second signal connector to be coupled to said first signal connector; wherein in a first mode that input control is performed by said mouse device, said first and second signal connectors are disconnected, and said second cursor movement control device is transmitted to said computer via said signal channel, and in a second mode that input control is performed by said touch pad, said first and second signal connectors are connected, and said first cursor movement control signal is transmitted to said computer via said signal channel. 6. The multi-mode input control device according to claim 5 wherein said first signal connector is directly mounted on said base housing, and said second signal connector is directly mounted on said mouse housing so that said mouse housing is attached to said base housing when said first and second signal connectors are connected. 7. The multi-mode input control device according to claim 6 wherein said base housing includes a recess on a surface thereof for receiving said mouse housing. 8. The multi-mode input control device according to claim 5 wherein said base housing includes a recess on a surface thereof for receiving said mouse device, said first signal connector is arranged in said recess, and electric connection between said first and second signal connectors are achieved once said mouse device is placed into said recess. 9. A multi-mode input control device for use with a computer via a graphic user interface by performing an input control operation, comprising: a first housing having a recess on a surface thereof, and keeping unmoved during said input control operation; a first input device accommodated in said first housing for generating a first cursor movement control signal in response to a first external force; a first signal connector mounted on said first housing in said recess and electrically connected to said first input device for transmitting said first cursor movement control signal to said computer; a second housing optionally received in said recess, and moved during said input control operation; a second input device accommodated in said second housing for generating a secon d cursor movement control signal in response to a second external force; a signal channel electrically connected to said second input device for communicating with said computer; a second signal connector mounted on said second housing at a specific position corresponding to a position of said first signal connector when said second housing is received into said recess of said first housing, and electrically connected to said second input device for transmitting said second cursor movement control signal to said computer in a first mode that said input control operation is performed by said second input device, and transmitting said first cursor movement control signal to said computer in a second mode that said input control operation is performed by said first input device; and a switching device electrically connected to said first and second input devices for determining either of said first and second modes is performed; wherein said second input device includes: a sensor for generating said second cursor movement control signal according to the movement of said second housing; a key switch for entering a command to said computer by exerting thereon a third external force so as to generate an input signal; a control unit electrically connected to said switching device and said key switch for processing said first and second cursor movement control signals and said input signal; and an interface circuit electrically connected to said control unit and said signal channel for transforming said first and second cursor movement control signals and said input signal into a designated format suitable for transmission to said computer. 10. The multi-mode input control device according to claim 9 wherein said second device is a mouse device. 11. The multi-mode input control device according to claim 10 wherein said first device is a trackball device. 12. The multi-mode input control device according to claim 10 wherein said first device is a touch pad device. 13. The multi-mode input control device according to claim 9 wherein in said first mode, said first and second connectors are disconnected so that said second input device is individually moved to generate said second cursor movement control signal, and said second cursor movement control signal is transmitted to said computer via said signal channel. 14. The multi-mode input control device according to claim 9 wherein in said second mode, said first and second connectors are electrically connected so that said first input device is manipulated to generate said first cursor movement control signal, and said first cursor movement control signal is transmitted to said computer via said first and second signal connectors and said signal channel. 15. The multi-mode input control device according to claim 9 wherein said signal channel includes a signal cable. 16. The multi-mode input control device according to claim 9 wherein said signal channel includes an infrared-ray (IR) signal transmission module. 17. The multi-mode input control device according to claim 9 wherein said signal channel includes a radio-frequency (RF) signal transmission module. 18. The multi-mode input control device according to claim 9 wherein said switching device is electrically connected to said sensor and said second signal connector for allowing either of said first and second cursor movement control signals to pass through said signal channel. 19. A multi-mode input control device for use with a computer via a graphic user interface by performing an input control operation, comprising: a first housing keeping unmoved during an input control operation; a first input device accommodated in said first housing for generating a first cursor movement control signal in response to a first external force; a first signal connector mounted on said first housing and electrically connected to said first input device for transmitting said first cursor movement control signal to said computer; a s econd housing optionally attached to said first housing, and moved during said input control operation; a second input device accommodated in said second housing for generating a second cursor movement control signal in response to a second external force; a signal channel electrically connected to said second input device for communicating with said computer; and a second signal connector mounted on said second housing at a specific position corresponding to a position of said first signal connector when said second housing is attached to said first housing, and electrically connected to said second input device for transmitting said second cursor movement control signal to said computer via said signal channel in a first mode that said input control operation is performed by said second input device, and transmitting said first cursor movement control signal to said computer via said signal channel in a second mode that said input control operation is performed by said first input device; wherein said second input device includes: a sensor for generating said second cursor movement control signal according to the movement of said second housing; a switching device is electrically connected to said sensor and said second signal connector for allowing either of said first and second cursor movement control signals to pass through said signal channel; a key switch for entering a command to said computer by exerting thereon a third external force so as to generate an input signal; a control unit electrically connected to said switching device and said key switch for processing said first and second cursor movement control signals and said input signal; and an interface circuit electrically connected to said control unit and said signal channel for transforming said first and second cursor movement control signals and said input signal into a designated format suitable for transmission to said computer. 20. The multi-mode input control device according to claim 19 wherein said second device is a mouse device. 21. The multi-mode input control device according to claim 20 wherein said first device is an input device selected from a group consisting of a trackball device and a touch pad device. 22. The multi-mode input control device according to claim 19 wherein in said first mode, said first and second connectors are disconnected so that said second input device is individually moved to generate said second cursor movement control signal, and said second cursor movement control signal is transmitted to said computer via said signal channel. 23. The multi-mode input control device according to claim 19 wherein in said second mode, said first and second connectors are electrically connected so that said first input device is manipulated to generate said first cursor movement control signal, and said first cursor movement control signal is transmitted to said computer via said first and second signal connectors and said signal channel. 24. The multi-mode input control device according to claim 19 wherein said signal channel is selected from a group consisting of a signal cable, an infrared-ray (IR) signal transmission module, and a radio-frequency (RF) signal transmission module.