Touch panel input apparatus

• US 5,189,732 A
• Filed: 03/28/1991
• Issued: 02/23/1993
• Est. Priority Date: 11/18/1987
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kondo, Hirotaka
• Primary Examiner(s): Harkcom, Gary V.
• Assistant Examiner(s): Nguyen, Phu K.
• Application Number:
  US07/679,132
• Time in Patent Office: 698 Days
• Field of Search: 364/518, 364/521, 178/18, 340/706, 340/747, 340/712, 340/721, 340/703, 395/155
• US Class Current: 715/840
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment

Abstract

A touch panel input apparatus comprises a memory storing data for correcting a key position according to the distance between a touch panel and a cathode ray tube (CRT) display and also according to the surface shape of the display screen. In response to the application of a touch input, a key code corresponding to display information is read out from the memory to display an effective key input area. The key position correction data is determined depending on an enlarged effective range of the touch key input and also depending on the parallax of the user viewing the display screen.

Claims

1. A pointing input panel apparatus, comprising:

display means;

transparent panel means for receiving a pointing input superposed on a display screen of said display means;

pattern memory means storing a plurality of pattern data including data of display areas displayed on said display means indicating pointing input positions;

key position memory means storing a plurality of position information each defining one of a plurality of effective areas for accepting pointing inputs made in correspondence to each of said display areas;

said key position memory means further storing key code information read out in response to a pointing input to said panel means for identifying said effective areas; and

said panel means being separated from said display screen such that an apparent alignment of said display areas and said effective areas changes when viewed from different positions thus causing parallax induced pointing input errors to occur for pointing inputs made about the periphery of said display areas; and

each of said effective areas having a periphery with a portion thereof that extends in a direction outwardly with respect to a like portion of the periphery of a corresponding one of the display areas to form an overlap area for accepting said parallax induced pointing input errors wherein the extending direction and size of the overlap area for each of the effective areas change in accordance with a position of said corresponding display areas on said display screen.

2. A panel apparatus according to claim 1, wherein, when a pointing input is applied to one of said display areas positioned on an upper part of the display screen of said display means, the overlap area of one said effective area corresponding to said one display area is enlarged and shifted toward a center of said display screen.

3. A panel apparatus according to claim 1, wherein said pattern memory means includes a region storing address location information of said position information stored in said key position memory means.

4. A panel apparatus according to claim 1, further comprising a register connected to said panel to register the location of a pointing input, and comparator means connected to both of said key position memory means and said register to decide whether or not said location of the point input is included within one of said effective areas.

5. A panel apparatus according to claim 1, wherein said size of the overlapped areas for each of the effective areas decreases as the position of said display areas approaches a view point on said display screen that is in alignment with an operator of the apparatus.

6. A pointing input panel apparatus, comprising:

display means;

transparent panel means for receiving a pointing input superposed on a display screen of said display means;

pattern memory means storing a plurality of pattern data including data of display areas displayed on said display means indicating pointing input positions;

key position memory means storing a plurality of position information defining a plurality of effective areas for accepting pointing inputs made in correspondence to each of said display areas;

said key position memory means further storing key code information read out in response to a pointing input to said panel means for identifying said effective areas; and

said panel means being separated from said display screen and said display areas being viewed from different viewing directions such that an apparent shifting in alignment of said effective areas with respect to said display areas occurs in variable amounts depending upon the different viewing directions, respectively, thus causing parallax induced pointing input errors to occur for pointing inputs made about the periphery of said display areas; and

said effective areas being respectively shifted in different predetermined directions with respect to said display areas according to said amounts of the shifting for accepting said parallax induced pointing input errors.

7. A panel apparatus according to claim 6, wherein the amount of shifting of said effective areas for said display areas changes according to said relative orientations of said viewed position and said display areas such that said effective areas are respectively larger than said display areas according to said relative amounts of shifting.

8. A panel apparatus according to claim 7, wherein the amounts of shifting of said effective areas located on an upper part of said display screen is larger than those of said effective areas located on a lower part of said display screen.

9. A panel apparatus according to claim 6, wherein said effective areas are shifted toward a center one of said effective areas of said display screen.

10. A panel apparatus according to claim 9, wherein said center one is located below a center part of said display screen.

11. A panel apparatus according to claim 6, wherein said display screen is curved.

12. A panel apparatus according to claim 6, wherein said predetermined directions extend radially inwardly toward a center of said display screen.

13. A pointing input panel apparatus for an automatic teller machine, comprising:

display means disposed in a horizontal direction;

transparent panel means for receiving a pointing input superposed on a display screen of said display means;

pattern memory means storing a plurality of pattern data including data of display areas displayed on a portion of said display means indicating pointing input positions wherein each of said display areas is of the same size;

key position memory means storing a plurality of position information each defining one of a plurality of effective areas for accepting pointing inputs made in correspondence to each of said display areas;

said key position memory means further storing key code information read out in response to a pointing input to said panel means for identifying said effective areas; and

said panel means being separated from said display screen and said display areas being viewed from different viewing directions such that an apparent shifting in alignment of said effective areas with respect to said display areas occurs in variable amounts depending upon the different viewing directions to cause parallax induced pointing input errors to occur for pointing inputs made about the periphery of said display areas; and

said effective areas being respectively of different sizes with respect to one another and corresponding ones of said display areas according to said amounts of the shifting, for accepting said parallax induced pointing input errors.

14. A pointing input panel apparatus, comprising:

display means;

transparent panel means for receiving a pointing input superposed on a display screen of said display means;

pattern memory means storing a plurality of pattern data including data of display areas displayed on said display means indicating pointing input positions;

key position memory means storing a plurality of position information each defining a plurality of effective areas for pointing inputs made in correspondence to each of said display areas, each of said effective areas including a first portion in superposed alignment with a corresponding one of said display areas;

said key position memory means further storing key code information read out in response to a pointing input to said panel means for identifying said effective areas; and

said panel means being separated from said display screen such that an apparent alignment of each of said effective areas with respect to a corresponding one of said display areas changes in accordance with different viewing directions of said display areas thus causing parallax induced pointing inputs intended to be within said first portion to be made outside a periphery of said first portion; and

said effective areas having a second portion outside the periphery of the first portion that extends in a direction outwardly with respect to the first portion to form an overlap area for accepting the parallax induced pointing inputs wherein the extending direction and a size of the overlap area for the effective areas changes in accordance with a position of said display areas on said display screen.

15. A panel apparatus according to claim 14, wherein said direction extends below a center point of said transparent panel.

16. A panel apparatus according to claim 14, wherein said predetermined different directions extend radially inwardly toward a center of said display screen and wherein the size of the overlap area decreases for each of the effective areas as the position of the corresponding display areas approaches said center point.