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Title: US4817010: Vending machine control with improved vendor selector switch detection and decoding apparatus
[ Derwent Title ]

Country: US United States of America

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12 pages

 
Inventor: Dobbins, Bob M.; Villanova, PA

Assignee: Mars Incorporated, McLean, VA
other patents from MARS INCORPORATED (354800) (approx. 351)
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Published / Filed: 1989-03-28 / 1987-03-02

Application Number: US1987000020690
IPC Code: Advanced: G06F 3/023; G07F 5/18; G07F 5/22; G07F 9/00; H03M 11/24;
Core: G07F 5/00; G07F 5/20; H03M 11/00; more...
IPC-7: G06F 7/04; G06F 15/20;

U.S. Class: Current: 700/232; 194/217; 221/009; 340/005.9; 340/825.78; 341/025; 700/237; 700/238;
Original: 364/479; 194/217; 221/009; 340/825.35; 341/025;

Field of Search: 364/479,478,482,484 340/365 C,365 R,365 S,365 E,825.35 235/381 221/002,4,6,9 222/052 194/216-218,239,240

Priority Number:
1987-03-02  US1987000020690

Abstract: A vending machine control with an improved vendor selector switch detection and decoding circuit is described which detects and decodes the closure of selector switches in a vending machine utilizing a low cost decoding arrangement. Each selector switch is associated with a corresponding impedance in a keyboard network so that a unique impedance is presented on a keyboard decode line from the keyboard network. Decode circuitry and a decode algorithm are also disclosed for a period based decoding scheme which compensates for various tolerances and environmental affects.

Attorney, Agent or Firm: Davis Hoxie Faithfull & Hapgood ;

Primary / Asst. Examiners: Ruggiero, Joseph;

Maintenance Status: CC Certificate of Correction issued

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Designated Country: AT BE CH DE ES FR GB GR IT LI LU NL SE  AU BR DK JP KR 

Family: Show 14 known family members
First Claim:
Show all 17 claims		 I claim:     1. A vending machine control apparatus for control of a vending machine, said control apparatus having an improved vendor selector switch detection and decoding apparatus comprising:
  • a plurality of vendor selection switches for selecting a product to be dispensed;
  • a plurality of impedances electrically connected to the plurality of vendor selector switches to form a keyboard network having at least one keyboard decode line which presents a unique keyboard impedance depending upon which switch of the plurality of vendor selector switches is closed;
  • a switch decode means for detecting and decoding a closure of at least one of the plurality of vendor selector switches, and for producing an output signal indicative of said closure on a switch decode line, said switch decode means having an input connected to the keyboard network by the keyboard decode line; and
  • a logic control means for making a determination of which of the plurality of vendor selection switches has been closed from the output signal on he switch decode line of the switch decode means and for utilizing said determination of the overall control fof the vending machine, said logic control means connected to the switch decode line of the switch decode means and to a plurality of vending machine means for controlling subfunctions of the vending machine.
    •


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Forward References: Show 6 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (6)   |   Backward references (51)   |   Citation Link

Buy
PDF		 Patent  Pub.Date  Inventor Assignee   Title
Buy PDF- 7pp US3304612  1967-02 Proctor et al.   Method and apparatus for converting cartograph coordinates to permanent digital form
Buy PDF- 7pp US3676607  1972-07 Nash et al.  Bell Telephone Laboratories, Incorporated PUSHBUTTON TELEPHONE DIAL
  US3691555  1972-09 Looschen  Burroughs Corporation ELECTRONIC KEYBOARD
Buy PDF- 5pp US3721976  1973-03 Kuijsten   KEYBOARD CODING AND INTERLOCK SYSTEM
Buy PDF- 6pp US3742137  1973-06 Garland  Teletype Corporation CASE SHIFTING CODE GENERATOR
Buy PDF- 10pp US3798370  1974-03 Hurst  Elographics, Incorporated ELECTROGRAPHIC SENSOR FOR DETERMINING PLANAR COORDINATES
Buy PDF- 14pp US3803592  1974-04 Hatley  Donnelly Mirrors, Inc. KEYBOARD AND DIGITAL CIRCUIT THEREFOR
Buy PDF- 7pp US3908100  1975-09 Richard et al.  General Signal Corporation Touch blend smooth surface switch assembly
Buy PDF- 16pp US3921165  1975-11 Dym  International Business Machines Corporation High resolution graphic data tablet
Buy PDF- 5pp US3928789  1975-12 Elias  Honeywell Inc. Switch interlock circuit
Buy PDF- 6pp US3952288  1976-04 Carpenter et al.  Bell & Howell Company Multifrequency linear filter networks with active elements
Buy PDF- 10pp US3953846  1976-04 Ekeland   Encoding device
Buy PDF- 6pp US3983553  1976-09 Kesling  General Motors Corporation Appliance remote touch-control panel with sound system
Buy PDF- 5pp US3988701  1976-10 Funston  GTE Sylvania Incorporated Oscillator frequency switching circuit for remote control transmitter
Buy PDF- 5pp US4015254  1977-03 Strandt  General Motors Corporation Keyboard encoding circuit utilizing an A/D converter
Buy PDF- 14pp US4078257  1978-03 Bagley  Hewlett-Packard Company Calculator apparatus with electronically alterable key symbols
Buy PDF- 9pp US4103252  1978-07 Bobick  Xerox Corporation Capacitive touch-activated transducer system including a plurality of oscillators
Buy PDF- 11pp US4125783  1978-11 Sefton   Touch switches
Buy PDF- 6pp US4164622  1979-08 Pobgee  National Research Development Corporation Graphical input apparatus for electrical equipment
Buy PDF- 31pp US4179748  1979-12 Brown et al.  National Semiconductor Corporation Programmer and method of storing information therein and accessing information therefrom
Buy PDF- 24pp US4225056  1980-09 Flubacker  Artag Plastics Corporation Computerized vending machine
Buy PDF- 99pp US4231105  1980-10 Schuller et al.  UMC Industries, Inc. Vendor control circuit
Buy PDF- 17pp US4233660  1980-11 Fagan  Artag Plastics Corporation Vending machine control system
Buy PDF- 5pp US4241333  1980-12 Giebler et al.  Siemens Aktiengesellschaft Key-operated arrangement for producing code characters
Buy PDF- 8pp US4266118  1981-05 Takase et al.  Mitsubishi Denki Kabushiki Kaisha Cooking control circuit for cooking range
Buy PDF- 7pp US4284208  1981-08 Levasseur  H. R. Electronics Company Vend control system
Buy PDF- 7pp US4305065  1981-12 Mogi  Sony Corporation Key input circuit
Buy PDF- 11pp US4319078  1982-03 Yokoo et al.  Nippon Telegraph & Telephone Public Corporation Apparatus for detecting X and Y coordinates of input points
Buy PDF- 18pp US4328539  1982-05 Heeger  AMF Incorporated Sequence controller with microprocessor
Buy PDF- 6pp US4336529  1982-06 Buan  Pitney Bowes Inc. Postage meter having shielded keyboard to protect against electromagnetic radiation
Buy PDF- 71pp US4354613  1982-10 Desai et al.  Trafalgar Industries, Inc. Microprocessor based vending apparatus
Buy PDF- 25pp US4372464  1983-02 Otten  PepsiCo Inc. Vending machine control circuit
Buy PDF- 17pp US4374384  1983-02 Moates  Westinghouse Electric Corp. Matrix encoder for resistive sensor arrays
Buy PDF- 9pp US4377049  1983-03 Simon et al.  PepsiCo Inc. Capacitive switching panel
Buy PDF- 103pp US4381835  1983-05 Shah et al.  UMC Industries, Inc. Control device
Buy PDF- 4pp US4415781  1983-11 Frame et al.  W. H. Brady Co. Membrane switch
Buy PDF- 4pp US4429301  1984-01 Crumley et al.  AMP Incorporated Means for decoding a switch array
Buy PDF- 19pp US4435616  1984-03 Kley   Graphical data entry apparatus
Buy PDF- 5pp US4440990  1984-04 Nozaki  SMK Electronics Corporation, USA Membrane keyboard assembly
Buy PDF- 19pp US4458187  1984-07 Heiman  Mars, Inc. Vending machine control and diagnostic apparatus
Buy PDF- 24pp US4481590  1984-11 Otten  PepsiCo Incorporated Vending machine control circuit
Buy PDF- 10pp US4495485  1985-01 Smith  General Electric Company Touch control arrangement for data entry
Buy PDF- 14pp US4498570  1985-02 King et al.  The Coca-Cola Company Multiple purchase discount module for a single price vending machine
Buy PDF- 5pp US4544923  1985-10 Blatter et al.  RCA Corporation Microprocessor self-turn-off arrangement for a consumer instrument
Buy PDF- 8pp US4555693  1985-11 Danish et al.  Polytel Corp. Multikey keyboard for inputting data into a computer
Buy PDF- 7pp US4567469  1986-01 Danish et al.  Polytel Corp. Matrix keyboard
Buy PDF- 5pp US4575714  1986-03 Rummel  Tegal Corporation Module presence sensor
Buy PDF- 8pp US4583189  1986-04 Koyama  Victor Company of Japan, Limited Microprocessor-based scan-mode keying circuit
Buy PDF- 25pp US4593361  1986-06 Otten  PepsiCo Inc. Vending machine control circuit
Buy PDF- 11pp US4616213  1986-10 Danish  Polytel Corporation Capacitive multikey keyboard for inputting data into a computer
Buy PDF- 17pp US4706794  1987-11 Awane et al.  Sanyo Electric Co., Ltd. Vending machine with a common display
       
Foreign References: None

Other Abstract Info: DERABS G88-251944

Other References:
  • IBM Technical Disclosure Bulletin, vol. 14, No. 8, Jan. 1972, J. L. Holt & L. S. Rogers--Keyboard Using Elastic Diaphram Switches.


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