`Willner et al.
`
`[54] DATA ENTRY SYSTEM
`
`[75]
`
`Inventors: Michael A. W illner, Mason Neck, Va.;
`Scott M. Arnel, Syosset, N.Y.
`
`[73] Assignee: Wilnel, Inc., Mason Neck, Va.
`
`[21] Appl. No.: 934,648
`[22] Filed:
`Sep. 22, 1997
`[51]
`Int. Cl.6 ................................................. H03K 17/94
`[52] U.S. Cl............................... 341/22; 341/26; 345/161;
`345/160; 345/168; 463/36; 463/37; 463/38
`[58] Field of Search ...................... 341/20, 22; 400/485,
`400/489, 100; 345/160, 168, 161; 463/38,
`36, 37
`
`[56]
`
`References Cited
`U.S. PATENT DOCUMENTS
`3,990,565 11/1976 Felton et al....................................... 400/70
`4,360,892 11/1982 Endfield ........................................ 707/534
`4,442,506 4/1984 Endfield ............................................ 341/22
`4,443,789 4/1984 Endfield et al..................................... 341/22
`4,516,939 5/1985 Crimmins, Jr.
`.................................. 434/38
`4,518,164 5/1985 Hayford, Jr. ............................... 273/148 B
`4,552,360 11/1985 Bromley et al.................................. 463/38
`4.655.621
`4/1987 Holden ...................................... 400/100
`4,680,577 7/1987 Strayer et al..................................... 345/160
`4,727,478 2/1988 Endfield et al.................................. 395/887
`4,833,446 5/1989 EUam et al......................................... 341/22
`4,917,516 4/1990 Retter .............................................. 400/489
`5,137,384 8/1992 Spencer et al................................... 400/489
`5,160,919 11/1992 Mohler et al................................... 345/168
`5,207,426 5/1993 Inove et al.......................................... 463/36
`5,317,505 5/1994 Karabed et al..................................... 463/37
`5,332,322 7/1994 Gambaro ......................................... 400/489
`5.408.621
`4/1995 Ben-Arie ................................... 364/190
`5,426,449 6/1995 Danziger ......................................... 345/168
`5,432,510 7/1995 Matthews .......................................... 341/20
`
`US005874906A
`[ i l] Patent Number:
`[45] Date of Patent:
`
`5,874,906
`Feb. 23,1999
`
`5,451,053
`5,479,163
`5,481,263
`5,486,058
`5,493,654
`
`9/1995 Garrido ........................................ 463/38
`12/1995 Samulewicz ....................... 121995/341
`1/1996 Choi ............................................. 341/20
`1/1996 Allen .......................................... 400/485
`2/1996 Gopher et al................................. 341/22
`
`FOREIGN PATENT DOCUMENTS
`213022
`4/1987 European Pat. Off. .
`308048
`9/1918 Germany.
`WO 86/05143 12/1986 WIPO .
`
`OTHER PUBLICATIONS
`P. J. Kennedy, “Hand-Held Data Input Device,” IBM Tech
`nical Disclosure Bulletin, vol. 26, No. 11, Apr. 1984, pp.
`5826-5827.
`D. C. Kowalski, “Semi-Captive Keyboard,” Xerox Disclo
`sure Journal, vol. 1, No. 2, Feb. 1976, p. 85.
`
`Primary Examiner—Michael Horabik
`Assistant Examiner—Albert K. Wong
`Attorney, Agent, or Firm—Rosenberg, Klein & Bilker
`[57]
`ABSTRACT
`A data entry system (100,100') has an ergonomic base (102,
`102') including upper surface controls (104, 104') which
`generate a first set of electrical signals, and side surface
`controls (106,106') which generate a second set of electrical
`signals when operated independently. A third set of electrical
`signals are generated when the side surface controls (106,
`106 ') are operated in combination with the upper surface
`controls (104, 104'). Data entry system (100, 100') further
`includes mode selection controls (108) for establishing the
`first, second and third sets of electrical signals as device
`control signals responsive to a first mode being selected and
`respective sets of alphanumeric and keyboard control signals
`responsive to a second mode being selected.
`
`15 Claims, 7 Drawing Sheets
`
`Stirewalt & Associates
`
`SCEAEx. 1011 Page 1
`
`
`
`U.S. Patent
`
`Feb. 23, 1999
`
`Sheet 1 of 7
`
`5,874,906
`
`CO
`
`SCEAEx. 1011 Page 2
`
`
`
`U.S. Patent
`
`Feb. 23, 1999
`
`Sheet 2 of 7
`
`5,874,906
`
`SCEAEx. 1011 Page 3
`
`
`
`U.S. Patent
`
`Feb. 23, 1999
`
`Sheet 3 of 7
`
`5,874,906
`
`SCEAEx. 1011 Page 4
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