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 |
| 4652917 | Remote attitude sensor using single camera and spiral patterns A system for monitoring the attitude of an object with respect to a fixed based without any material connection to the object, comprising imaging apparatus mounted on the base so that a surface of the object is in the field of view, targets on the surface... | 03/24/1987 |
| 4597007 | Circuitry for correcting frame combed luminance signal for motion induced distortion A frame comb filter system includes circuitry for reducing motion induced artifacts in reproduced images. Frame comb filtered chrominance signal is line comb filtered to extract motion induced luminance cross components therein. The luminance cross compon... | 06/24/1986 |
| 4589018 | Technique for the time frequency multiplexing on three television signals The present invention relates to a technique for the Time-Frequency-Multiplexing (TFM) of three television signals. More particularly, three fields of a TV signal are sent simultaneously to a remote receiver by transmitting one field as is in the baseband... | 05/13/1986 |
| 4589032 | Ultra low power video amplifier A logic signal controlled switching video amplifier is disclosed having minimal power dissipation. By utilizing diode and transistor amplifier switching techniques, charging and discharging currents in the video amplifier are controlled. The stray capacit... | 05/13/1986 |
| 4571566 | Electromagnetic relay An electromagnetic relay includes at least one permanent magnet provided with pole pieces and a soft magnetic armature the ends of which cooperate with the pole pieces. The pole shoes are electrically insulated from each other and serve as fixed contacts.... | 02/18/1986 |
| 4571631 | CIG Distortion correction with delay lines Distortion occurring when tan θ mapped CIG video is projected onto a ide angle non-tan θ display is corrected in both line direction and cross-line direction by varying the propagation time of the pixels within a line to achieve a non-distorted line and ... | 02/18/1986 |
| 4568976 | Apparatus for synchronizing two video pictures by controlling vertical synchronization of a video camera Apparatus for synchronizing a first video signal corresponding to a first image and a second video signal corresponding to a second image, each of the first and second video signals including vertical and horizontal synchronizing signals, including a vide... | 02/04/1986 |
| 4568966 | Compatible color television with regenerable signals Novel means are disclosed for conditioning a standard color-television composite signal, such as the NTSC composite, so that pictorial information is represented according to Nyquist samples which are very coarsely quantized and therefore regenerable. Thi... | 02/04/1986 |
| 4567522 | Line synchronizing circuit for a picture display device A line synchronizing circuit for a picture display device comprising a voltage-controlled oscillator for generating a signal whose frequency is higher than the line frequency, a frequency dividing circuit for dividing the frequency of the oscillator signa... | 01/28/1986 |
| 4563703 | Video processing systems A processing system includes a processor 10 and frame store 11. Both the frame store and processor are under the control of address mechanism 12. The addressing mechanism 12 can generate the desired information from address information which is only provi... | 01/07/1986 |
| 4562481 | Overlay for cathode ray tube display The disclosed CRT overlay, which is mounted to the display face of a CRT, comprises an overlay panel (typically a non-glare optical filter) mounted at its edges to the CRT display face and a layer of transparent glass beads interposed between the overlay ... | 12/31/1985 |
| 4562485 | Copying apparatus A copying apparatus includes a carriage on which an original document may be placed, a scanner for scanning the image of an original document placed on the carriage, a memory for storing the original image scanned by the scanner in a state of a group of p... | 12/31/1985 |
| 4561106 | Character recognition process and apparatus Disclosed herein is a character recognition process which extracts white regions surrounded by strokes of character pattern information and recognizes characters by determining the directions in which said white regions are opened. The process is provided... | 12/24/1985 |
| 4561013 | Color sign inserting circuit for video signal reproducing system A color sign inserting circuit for a video signal reproducing system is disclosed, which comprises a the color burst detecting circuit for extracting color burst from a video signal detected from a recording system, a flywheel oscillator locked to the ave... | 12/24/1985 |
| 4561014 | Method and circuit for frequency and phase locking a local oscillator for television A conventional phase locking loop for locking a local oscillator in phase and frequency to a color burst signal in a television system requires a highly stable (i.e. crystal controlled) oscillator whose free running frequency must be individually adjusted... | 12/24/1985 |
| 4559559 | Noise reducing circuit A noise reducing circuit, including a circuit to reduce noises contained in a low frequency band with a clamping circuit, having a first circuit with an attenuating characteristic near a first frequency which is the upper frequency limit of a noise that c... | 12/17/1985 |
| 4559560 | Ghost reduction circuit for a television receiver A ghost reduction circuit for a television receiver incorporating a transversal filter comprises a memory for storing tap gains of tap gain amplifiers constituting part of the filter, a detector for detecting a ghost component as an error signal by compar... | 12/17/1985 |
| 4558355 | Trilevel sandcastle pulse encoder In a color TV receiver incorporating automatic kinescope bias (AKB) control circuits, a first train of monolevel pulses with timing suitable for retrace blanking purposes and a second train of monolevel pulses with "backporch" timing appropriate for burst... | 12/10/1985 |
| 4556900 | Scaling device as for quantized B-Y signal A signal processing apparatus includes a scaling device for increasing the magnitude of a signal from a source to better use the dynamic range of processing apparatus, and to reduce the effects of noise and error sources. This is particularly useful in a ... | 12/03/1985 |
| 4556915 | Image reproduction device This invention provides an image reproduction device having a horizontal coordinate memory, a vertical coordinate memory and a domain code memory which comprise respectively a RAM, horizontal and vertical counters, horizontal and vertical coordinate compa... | 12/03/1985 |
| 4556913 | Apparatus for preventing virtual images in projection television receivers A rear projection television receiver has an image source, first and second mirrors, and a screen. Light travels from the image source to the screen along a first light path via the first and second mirrors and along a second path that bypasses the mirror... | 12/03/1985 |
| 4556904 | Teletext system having user prompt commands Special prompt character identifying control codes are inserted in teletext data for transmission to a teletext equipped receiver. The prompt character identifying codes are detected in the receiver and applied to a symbol converter which alters the promp... | 12/03/1985 |
| 4556905 | Vertical synchronizing control circuit After an external vertical sync signal is inputted, a divider circuit counts a predetermined number of clock pulses and delivers a vertical sync signal and a control signal allowing the external signal to pass through a gate circuit. The external vertical... | 12/03/1985 |
| 4555723 | Apparatus for reducing motion induced distortion in a frame combed chrominance signal Frame comb filters effectively separate the chrominance and luminance components of composite video signal but produce undesirable image distortion when interframe motion occurs. Luminance cross components introduced into the comb filtered chrominance sig... | 11/26/1985 |
| 4554520 | Electromagnetic miniature relay In a compact electromagnetic miniature relay comprising a contact spring (12) which is firmly clamped at one end, and which bears double contacts (9, 10) arranged on each side, and with the connecting line thereof extending vertically in relation to the l... | 11/19/1985 |
| 4554522 | Electromagnetic relay In a relay according to this invention the terminal elements (17) are injection-molded into wall members (2,3) which are so designed that they during assembly, and if so required, together with parts of the flange (35) of the coil (16) of the electromagne... | 11/19/1985 |
| 4554582 | Apparatus for synchronizing a source of computer controlled video to another video source Synchronization of a source of computer controlled video to a video disc player for interactive application is obtained by sensing when the computer vertical sync leads that of the player and gating out a number of computer clock pulses equaling one video... | 11/19/1985 |
| 4554589 | Process and device ensuring the fixation on the neck of a cathode tube of the deviation collar of the tube The invention concerns a process and a device ensuring the fixation on the neck of a cathode tube of the deflection yoke of the tube. According to the invention, the deflection yoke 3 is fixed after its positioning has been determined between a fixed abut... | 11/19/1985 |
| 4554591 | Reproducible image and information bearing record A reproducible image and information bearing medium, termed herein as a photorecord, includes a visible image bearing media, such as a photographic print, negative, transparency or the like, and an attached information storage medium. The information stor... | 11/19/1985 |
| 4553158 | Circuitry for correcting motion induced errors in frame comb filtered video signals A frame-to-frame comb filter system which reduces motion induced artifacts in the comb filtered luminance signal includes line comb filter circuitry for extracting luminance cross components from the comb filtered chrominance signal and reinserting them i... | 11/12/1985 |
| 4553166 | Video system with automatic power up A high brightness mobile video system includes a standby circuit for maintaining a low CRT filament heater circuit current from a battery supply. The standby circuit monitors an input circuit for video signals. On receipt of a video signal, the standby ci... | 11/12/1985 |
| 4553116 | Molded case circuit breaker with resettable combined undervoltage and manual trip mechanism A molded case circuit breaker includes a manually resettable undervoltage trip mechanism for initiating a trip operation of the circuit breaker upon an undervoltage condition. The undervoltage trip mechanism includes a solenoid having a fixed electrical c... | 11/12/1985 |
| 4553156 | Circuit and process for chrominance decoding with analog or digital delay line in a television system of a pal or secam type The present invention provides a matching circuit for connecting a chrominance decoding integrated circuit normally connected by terminals to a conventional analog delay line so as to make it compatible with a digital delay line. This matching circuit com... | 11/12/1985 |
| 4553162 | Television transmitter A television transmitter for transmitting signals including two sound channels either for dual language or stereophonic sound transmission includes a combining filter 4 having a narrow sound passband. In order to reduce the amplitude modulation of the sou... | 11/12/1985 |
| 4553165 | Transform processing method for reducing noise in an image An improved image processing method reduces noise in a sampled image while minimizing unintended distortion of image features. Image signals are generated representative of the light value of elements of the image. These signals are formed into signal arr... | 11/12/1985 |
| 4553173 | Image processing apparatus An image processing apparatus such as a laser beam printer or an ink jet printer can reproduce halftone images with a high resolution and a high gradation. Four subelements of an 8×8 matrix picture element which correspond to low gray levels are further ... | 11/12/1985 |
| 4553115 | Molded case circuit breaker with single solenoid operator for rectilinear handle movement A molded case circuit breaker includes a single coil solenoid operator for placing the handle of the circuit breaker in its ON position or in its OFF position. The solenoid operator includes a single coil solenoid formed by an electromagnet secured to a m... | 11/12/1985 |
| 4551698 | Polarized electromagnetic relay A polarized electromagnetic relay including a coil body positioned over a core, and having at least one winding thereon. A permanent magnet is positioned in close proximity to the coil body. An armature externally embraces the coil winding and with the pe... | 11/05/1985 |
| 4551767 | Stationary-picture transmission system A television signal transmission system with stationary-picture transmission capabilities including the ability to stop picture transmission at any point within a picture frame. The picture stop feature is realized by inserting a control code within each ... | 11/05/1985 |
| 4551755 | Television bandwidth correcting system A television bandwidth correcting system for use with a television receiver or television tuner in which the quality of the displayed picture, defined by the bandwidth of the video signal, is accurately maintained for all input signal levels. Video and au... | 11/05/1985 |