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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 4074258 | Device for reading displacements of a movable member A device for reading out the position of a movable member comprising a sc carried by that member and having equidistant coded references. Each reference is different from the others. A stationary optical system forms the image of a portion of the scale o... | 02/14/1978 |
| 4070584 | Object-identification system with sequentially activated photocell array An object-identifying system is described comprising at least one device for remotely identifying a plurality of objects bearing each a characteristic code in the form of a badge which has alternating reflective and non-reflective strip zones. The objects... | 01/24/1978 |
| 4066910 | Transmissivity-coded data card systems A photoelectric data card system is disclosed in which the cards are transmissivity-coded, so that light of a particular wave length and intensity is transmitted in varying degrees of different code digit representing areas of the cards, and thus the inte... | 01/03/1978 |
| 4057839 | Tape cassette drive A drive for a magnetic tape cassette. Edge and corner blocks mounted on a planar frame receive the leading edge of a magnetic tape cassette adjacent the corners thereof and position the cassette with respect to drive spindles which engage tape reels in th... | 11/08/1977 |
| 4056711 | Method and apparatus for programming microprocessors A method and apparatus for programming microprocessors which require machine code program instructions wherein black and white code strips are selectively pasted on a sequential instruction frame along a preprinted address code column, each code strip inc... | 11/01/1977 |
| 4052594 | Mark reader with improved mark sensing heads A document reader having a pair of improved sensing heads for reading marks on both sides of a document. Each head comprises a body portion equipped to transmit radiation onto a document and sense radiation reflected back from marks on the document. A sub... | 10/04/1977 |
| 4041279 | Data reading device A device is provided for reading optical and magnetic data and providing signals representative thereof, said device including means for establishing a predetermined time or spacial reference between the optical and magnetic data sets. In one embodiment t... | 08/09/1977 |
| 4036430 | Manually operable card reader A manually operated card reader for reading punched data recorded on a standard sized tabulation card and for reading punched data recorded on an appropriately sized identification badge or card is disclosed. Data is read from the standard sized tabulatio... | 07/19/1977 |
| 4034211 | System and method for providing a security check on a credit card A system and method for providing a security check on a credit card. The credit card has first data recorded thereon in the form of optical gratings to provide for card uniqueness and second data recorded thereon in a magnetic track also located on the ca... | 07/05/1977 |
| 4032230 | High speed microfilm searching system A high speed microfilm searching system is disclosed. The system optically displays frames of the microfilm. A frame or column of microfilm is made up of a sensor mark, pages of information and an index code. The index code is a meaningful alphanumeric or... | 06/28/1977 |
| 4029944 | Data transducer An optical and magnetic data transducer is provided comprising a magnetic reluctance aperture which is split into two sections with an optical reading aperture disposed generally therebetween. This reduces timing errors between the optical and magnetic ou... | 06/14/1977 |
| 4028528 | Code scanning system The specification discloses a binary code reading system in which a code strip is formed of spaced retroreflective segments in a reglet and which are selectively blocked by runners to define a binary code. Detectors spaced at intervals corresponding to ad... | 06/07/1977 |
| 4023010 | Optical identification system and reader for reading optical gratings on a record medium An optical identification system including a reader for reading superimposed optical gratings on a record medium in which the reader has a grating plane and a radiant energy source for directing energy therefrom along an optical axis to the grating plane.... | 05/10/1977 |
| 4020924 | Window structure for optical code reading scanners Window structure in which the aperture incorporated in package slide is left open, the scanning window being recessed below and to one side of the aperture, making a substantial angle with the plane of the slide and located to join at one edge of the aper... | 05/03/1977 |
| 4020327 | Apparatus for reading optical codes A reader for optically encoded information such as a credit card having an embossed data track includes an array of radiant energy transmitting elements and a single detector element formed on a planar chip. The chip is seated in a recessed area formed in... | 04/26/1977 |
| 4011435 | Optical indicia marking and detection system An optical marking system which utilizes tags that are formed from multiple diffraction gratings, which gratings differ in orientation and number of lines (frequency) in accordance with the coded information desired on the tags. A monochromatic light sour... | 03/08/1977 |
| 3999043 | Pulse width detection circuit for electro-optical label reading system A circuit for producing an output pulse of predetermined amplitude and a width equal to the mid amplitude width of an input pulse from an electro-optical label reading system is provided. The present circuit comprises delay line means having a first outpu... | 12/21/1976 |
| 3988572 | Synthetic aperture system for information transfer and object identification A system for information transfer and object identification. A record or label having resolution elements forming an image or code, and a coherent optical system including light source, detector, and data processor for reading records and labels moving re... | 10/26/1976 |
| 3986001 | Sales computer utilizing sensor pairs One pair of sensing elements is furnished for each column of a card being transported past the sensing element in the direction of the columns. The first and second sensing element constituting each pair are spaced apart from each other both in a directio... | 10/12/1976 |
| 3983364 | Apparatus utilizing analog-to-digital conversion in the photoelectric reading of documents An examination answer sheet, on which the examinee has darkened certain discrete areas with a graphite or lead pencil to denote his selected answers to multiple choice questions, is moved relative to a plurality of photoelectric cells, these cells providi... | 09/28/1976 |
| 3983366 | Article sorting apparatus and method There is disclosed an article sorting apparatus and method wherein articles bearing a manually marked code in a grid or code area locatable by one or more guide elements which may be separate and distinct from the manually marked code. For postal articles... | 09/28/1976 |
| 3949194 | Check-out terminal A check-out terminal wherein coded data identifying articles being checked out is carried past an optical code reading system at a substantially constant distance away includes a tilted main conveyor belt and at least two subsidiary conveyor belts arrange... | 04/06/1976 |
| 3947666 | Card reader A card reader for reading a Hollerith coded card where the holes in the card are scanned by a single array of photo detectors as the card is withdrawn from a slot, and where an edge detector determines when the card is fully inserted into the slot so as t... | 03/30/1976 |
| 3947843 | Arrangement for preventing ambiguity in digital displacement measuring apparatus The displacement of a first element relative to a second element in a predetermined direction is measured by a code display which has sets of code markings, each set representing a predetermined unit of displacement, spaced at predetermined distances from... | 03/30/1976 |
| 3947817 | Hand operated optical character recognition wand An optical data reader and processor utilizing a two dimensional array of photosensitive elements operated at a high frame rate; a shift register of one character width, and greater than one character height to store the binary representation of the chara... | 03/30/1976 |
| 3939327 | Optical reading apparatus and method Apparatus for recognizing alpha-numeric indicia that are either printed or embossed such as are common to credit cards and other identification means for use in a data processing system. The optical reading apparatus scans a surface to be read using a rea... | 02/17/1976 |
| 3937928 | Embossed card reader An information reader for optically reading information recorded in the form of an array of aligned embossments on a card, comprising a slit plate positioned over a card transport table having two slits, one for directing incident light toward the embosse... | 02/10/1976 |
| 3935429 | Process and apparatus for controlling document feeding machines from indicia contained on a document fed therefrom A process and apparatus are provided for controlling a document inserting machine having a plurality of operating stations therein, one of which includes a high speed feeder for feeding documents bearing control function indicia thereon. The process invol... | 01/27/1976 |
