Touch switch input device for computer system

• US 5,148,015 A
• Filed: 12/24/1990
• Issued: 09/15/1992
• Est. Priority Date: 12/24/1990
• Status: Expired due to Fees

• Current Assignee: Pitney Bowes Incorporated (Böwe Systec AG)
• Original Assignee: Pitney Bowes Incorporated (Böwe Systec AG)
• Inventors: Dolan, Donald T.
• Primary Examiner(s): Nelms, David C.
• Assistant Examiner(s): Allen, Stephone B.
• Application Number:
  US07/633,724
• Time in Patent Office: 631 Days
• Field of Search: 250/221, 250/229, 341/31
• US Class Current: 250/221
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen

Abstract

A computerized system for displaying menu selections, and a touch switch comprising an array of reflective sensors paralleling the menu selections for highlighting a menu choice in response to a user touch, cooperating with a spacebar type switch paralleling the array for depression by the user to execute the highlighted function.

Claims

1. In a computerized system having a monitor, first means for displaying on the monitor plural items each representing one of a plurality of functions to be executed by the computer, second means in response to a user-generated selection signal to indicate on the monitor a selection of a particular function desired to be made by the user, and third means in response to a user-generated execution signal to execute the selected function;

the improvement comprising means in response to a user'"'"'s object'"'"'s touch to generate both the selection and execution signals, said means comprising;

(a) a plurality of optical sensors, each of said sensors comprising a radiation emitter and an adjacent radiation detector positioned to receive and detect radiation generated by the emitter and reflected from a user'"'"'s object'"'"'s touch for generating said selection signal,

(b) switch means having actuation member responsive to actuation by the user for generating said execution signal, said actuation member being positioned such that it can be actuated by the user to generate said execution signal by the same object touch that generates the selection signal.

2. The system of claim 1, wherein said actuation member comprises a rigid elongated bar such that actuation anywhere along its length operates the switch means.

3. The system of claim 2, wherein the optical sensors are arrayed in a line extending parallel to the length direction of the elongated bar.

4. The system of claim 3, wherein the line of sensors is adjacent but closely spaced to the elongated bar.

5. The system of claim 3, wherein the line of sensors is embedded in the switch means beneath the actuating member.

6. The system of claim 1, wherein the sensors each comprise, side-by-side, an LED emitter and a photodetector.

7. The system of claim 6, wherein each LED emitter and each photo-detector has an active window, said windows facing in the same direction.

8. A combined electrical-optical touch switch, comprising:

(a) an elongated member having a single elongated actuation part and an electrical switch connected to the actuation part such that movement of any portion of the actuation part will cause the electrical switch to change state,

(b) a line of adjacent touch sensors each comprising a radiation emitter and a radiation detector,

(c) said line of touch sensors being positioned relative to the elongated member such that when a user places an object on the elongated member at a selected position overlying one of the sensors to make a selection, the output of the underlying detector changes sufficiently to detect the object while simultaneously the user can actuate the electrical switch with the same object and without laterally displacing the object.

9. The switch of claim 8, wherein the touch sensors each comprise, side-by-side, a light emitter and a light detector.

10. The switch of claim 9, wherein the light infrared radiation.