| Patent Number |
Title Of Patent |
Date Issued |
| 4875123 |
Adjustable audio control-eraser and tape guide assembly for a cassette tape video tape recorder |
October 17, 1989 |
| An adjustable audio control eraser and tape guide assembly for a cassette type video recorder comprising a housing, a tape cassette disposed in a front portion of the housing, and an audio control eraser and tape guide assembly disposed in rear portion thereof, the audio control eraser a |
| 4858969 |
Door latch assembly |
August 22, 1989 |
| A door latch assembly for use in a microwave oven comprises a latch pawl secured to the inside of the door, a revolving plate having integrally molded therewith a push projection, a hook-shaped projection having a stop surface formed thereon, a projected bar and a U-shaped spring support |
| 4849830 |
Picture stabilizing circuit for generating a forced synchronizing signal |
July 18, 1989 |
| When a speed change occurs during a reproduction mode of a VCR, an analog video signal is developed that has a width determined by synchronizing the analog video signal to a point in time when an electrical potential for the head switching signal is shifted. The analog video signal is ap |
| 4843464 |
Device for automatic sensing of televiewing distance |
June 27, 1989 |
| An apparatus for automatically sensing televiewing distance to determine whether or not a televiewer is standing within a predetermined potentially harmful distance in front of a television set by making use of the elapsed time difference between an ultrasonic pulse generated and emitted |
| 4837621 |
Mode discriminator for monitor |
June 6, 1989 |
| A mode discriminator for detecting a specific mode of horizontal synchronizing frequency applied to a display monitor includes first and second monostable multivibrators coupled to a vertical synchronizing signal associated with the horizontal synchronizing frequency. The discriminat |
| 4835614 |
Control method for limiting watching distance in television |
May 30, 1989 |
| A control method wherein a TV receiver, under the programmed control of a microcomputer, prevents infrared signals from a remote control transmitter and a watch-distance-limit-device transmitter from interferring with each other while using only one time-shared receiver for both function |
| 4833284 |
Power relay switching control device for microwave oven |
May 23, 1989 |
| A power relay for a switching control device of a microwave oven, designed to prolong the life of the power relay by alternately carrying out the drive of the power relay used for controlling the power in a microwave oven at the positive (+) cycle and the negative (-) cycle of the al |
| 4831448 |
Viewing distance sensor for television receiver |
May 16, 1989 |
| A viewing distance sensor for television receiver which cannot influence the remote infra-red control function over other electronic equipment positioned in the vicinity of a television receiver and also cannot be influenced by the infra-red signals transmitted from other electronic |
| 4831311 |
High voltage stabilizing circuit for prevention of overheating |
May 16, 1989 |
| A high voltage stabilization curcuit for a multi-frequency horizontal deflection circuit in a video monitor or receiver and having a plurality of supply voltages applied to the flyback transformer of the deflection circuit through the operation of a pair of series connected switching |
| 4829414 |
Circuit for generating a constant high voltage for CRT deflection in response to multi-frequency |
May 9, 1989 |
| A circuit for generating a constant DC high voltage responsive to an input signal having various frequencies, having a frequency-voltage converter responsive to the input signal to generate a voltage signal corresponding to the frequency of the input signal. The voltage signal is applied |
| 4826224 |
Door latch assembly |
May 2, 1989 |
| A latch assembly for securing a microwave oven door comprising two latch pawls engaging latch hangers, a vertically reciprocable or movable member having an elongated hole, a rack and two spaced legs, a spring-biased pinion contacting with a push-button. The force applied by the spring b |
| 4825027 |
Microwave oven door latch assembly |
April 25, 1989 |
| A door latch assembly for use in a microwave oven has a latch pawl coacting with a support member to lock or release a door of the oven. A wormgear having a switching wheel fixedly mounted thereon engages a worm driven by a motor controlled by primary and secondary switches both wired in |
| 4822968 |
Electromagnetic energy seal for a microwave oven |
April 18, 1989 |
| An electromagnetic energy seal for a microwave oven includes a seal plate fixed on an inner wall of a door frame of the oven which is adapted to form an opening. From an upper end of an outer wall of the door frame, an inwardly bent member is extended. Also, slits having a uniform width |
| 4816612 |
Shield case for antenna terminal |
March 28, 1989 |
| A shield case for an antenna terminal having a substrate housed therewithin. The substrate contains signal-transmitting condensers and ground-balancing condensers which are spaced from one another and, gaps which are provided between each of the signal-transmitting condensers and bet |
| 4814758 |
Color plasma display panel making use of a multiple substrate |
March 21, 1989 |
| A color plasma display panel making use of a multiple layer substrate includes a glass plate arranged with an inverse frusto-conical discharge space, an anode formed on the upper surface of the glass plate in the inner central part of the discharge space, a thin glass plate provided |
| 4812926 |
Automatic tracking device for VCR with capstan motor controlled by color signal |
March 14, 1989 |
| The present invention relates to an automatic tracking device for VCR designed to achieve an automatic tracking by making compensation for phase of capstan motor depending on the relative magnitudes of real color signal and cross talk signal among reproduced video signals. When video sig |
| 4811138 |
Cassette loading device of video cassette tape recorder |
March 7, 1989 |
| A cassette loading device comprising a cassette holder having guide groove, a cover plate connected to the cassette holder by a connecting member which includes a guide groove, and a U-shaped leaf spring attached to the cover plate so that the cassette holder is provided with a large spa |
| 4809867 |
Door opening/closing device for electronic appliances |
March 7, 1989 |
| A door opening/closing device for use in electronic appliances such as a VCR, a TV set and audio products, which can easily open the door of an electronic appliance simply by pushing a locking-loosening button. The device comprises a door to open and close the front opening of the front |
| 4807065 |
Apparatus for driving loading gears in a video cassette-tape recorder |
February 21, 1989 |
| An apparatus for driving loading gears in a video cassette tape recorder comprising a cam with a spiral cam slot, a sector gear and an auxiliary plate. The loading gears may be rotated to the rotation of the sector gear which is rotated according as the activating plate is moved either r |
| 4807061 |
Rapid reel braking device for a video cassette tape recorder |
February 21, 1989 |
| A rapid reel braking device for a video cassette tape recorder comprising a function plate adapted to operate brakes for applying a braking force to reels of the recorder, a cam gear with several operative positions corresponding to various operation modes of the recorder, respectively, |
| 4803551 |
Module for use in receiving teletext signal |
February 7, 1989 |
| A compact module for receiving teletext data contained in a composite video signal is usable with a personal computer or a videotex decoder system. The module includes a data selector for separating teletext data from the video signal, a receiver for checking data transmission errors and |
| 4800246 |
Device for protecting the turntable shaft of microwave ovens from the concentration of microwave |
January 24, 1989 |
| A device for protecting a turntable shaft in a microwave oven to prevent the turntable shaft, which is made out of a resinous material, from fusing during the operation of the microwave oven. A protective plate is formed on the lower surface of the turntable in such a manner that a s |
| 4796116 |
Compact cassette type video tape recorder having single actuating plate |
January 3, 1989 |
| A video cassette recorder having a slim VCR body which includes a loading motor disposed on a deck and a slideable actuating plate disposed on the deck having integrally formed thereon various actuating elements for actuating various tape cassette mechanisms. A mode conversion connecting |
| 4795109 |
Tape cassette loading device |
January 3, 1989 |
| A tape cassette loading device comprising a housing, brackets, a cassette holder having a pin, levers having a recess and a gear member, and V-shaped driving member defining two arms wherein one is an arcuate shaped gearing surface and the other extends to form a door, whereby, upon |
| 4794270 |
Stabilizing circuit for switching mode power supply circuit |
December 27, 1988 |
| A switching mode power supply circuit designed to apply an operating power to the load when a relay connected to the remote control part is driven. The switch of the relay is connected to the base of the switching transistor, and the secondary winding of the transformer for making the |
| 4787220 |
Agitator for a full automatic washer |
November 29, 1988 |
| The invention relates to an agitator with an improved structure and more particularly to a spiral ramp agitator used in the full automatic washer. The agitator of the present invention is composed of such improved structure that the vanes are formed in a particular shape increasing g |
| 4782409 |
Tape cassette loading device |
November 1, 1988 |
| A tape cassette loading device comprising a lever pivotally fixed to the peripheral surface of an arm gear having an upright protrusion thereon and forward and backward inclined portions therebelow, a contacting member protruded below a worm wheel to contact the upright protrusion of the |
| 4782407 |
Video cassette tape recorder including a device for opening lid of a tape cassette during the lo |
November 1, 1988 |
| A cassette loading mechanism for a video cassette tape recorder includes a carrier for loading a tape cassette in the recorder which moves relative to a carrier guiding sidewall member by virtue of vertical and horizontal guide slots which are provided in the side wall member. An operati |
| 4782396 |
Automatic focusing system of video camera using the contrast characteristics of the Y signal |
November 1, 1988 |
| An automatic focusing system adjusts the focus of video camera automatically using the contrast of the Y signal, which is one image input signal. The maximum and minimum values of the Y signal determine the contrast of the Y signal. This contrast value is then compared with the previ |
| 4781339 |
Tape cassette loading and reel braking mechanism |
November 1, 1988 |
| An apparatus for loading or unloading a tape cassette by using an existent capstan motor without a separate motor and for actuating main brakes onto reel tables by means of an electric solenoid and an actuating plate without use of a ratchet gear. |
| 4777538 |
For stabilizing video image during recorded program changes |
October 11, 1988 |
| Image information recorded on a record medium such as a video disk is scanned in a search scan operation and the image information applied to the video screen is muted during time periods when the readout head of the device jumps between respective programs on the video disk. In addition |
| 4766493 |
Device for verifying operational conditions of monitor |
August 23, 1988 |
| A device for verifying the operational conditions of a monitor, to distinguish between a computer malfunction and a monitor malfunction by separating the signal cable of the monitor from the computer in the event that the computer system gets out of order. The horizontal synchronizing |
| 4766279 |
Heat variation detecting circuit for the microwave oven |
August 23, 1988 |
| A heat variation detecting circuit, for use with a heat sensor in a microwave oven, comprises a heat sensor, temperature memorizing registers and control comparators. The temperature sensed by the heat sensor is converted via an A/D converter into a digital signal and is memorized in a |
| 4764652 |
Power control device for high-frequency induced heating cooker |
August 16, 1988 |
| A power control device for high-frequency induced heating cooker is designed to supply a constant power to the work coil regardless of any change in the input current and voltage. The control device compares the voltage detected at the input current sensor detecting the input current |
| 4757587 |
Propeller construction of an electric fan |
July 19, 1988 |
| A fan assembly includes a propeller fixedly mounted on a shaft. The propeller has a rear side where fluid enters and a front side where fluid exits. The propeller has blades with an arcuate rib located on the front side of each blade. The arcuate rib may have curved outer surfaces at its |
| 4757400 |
Cassette housing construction of a video cassette recorder |
July 12, 1988 |
| A housing construction of a top loading-type videocassette recorder, comprising a pair of brackets and a cassette holder disposed between the brackets. In the construction, a spring serving as a power source for operating the cassette holder and a damping mechanism for avoiding sudden |
| 4757173 |
Turntable for use in a microwave oven |
July 12, 1988 |
| A turntable for use in a microwave oven which comprises a tray containing a stem portion for supporting an object to be heated, an axial cavity disposed in the stem portion, a motor shaft extending into the axial cavity for operative engagement with the stem portion, a motor connected |
| 4752843 |
System for indicating a precise tracking in a video cassette recorder |
June 21, 1988 |
| A tracking indication system of a VCR to make a recognition to a user whether or not a precise tracking of a video head is achieved. The invention includes a peak value detecting and holding circuit for detecting and holding in a predetermined time a peak value of the reproduction ou |
| 4743727 |
Turntable drive unit for a microwave oven |
May 10, 1988 |
| A turntable drive unit of a microwave oven which comprises a spring box disposed below floor of the cooking chamber in the microwave oven, the spring box containing a shape memory alloy plate spring disposed therein, an axle mounted to the spring box through one end thereof and the other |
| 4735371 |
Device for winding a cord such as an electric cord |
April 5, 1988 |
| A device for winding a cord having upper and lower guide plates, each having a longitudinal guide slot. Slide knobs mounted on the guide plates each have transfer guide slots. Winding rods are slide-mounted in each transfer guide slot and extend through the longitudinal guide slots of th |
| 4730792 |
A braking device for a video cassette recorder |
March 15, 1988 |
| A braking device for a video cassette recorder comprises braking members operatively connected to a supply reel table and a take-up reel table, the braking members pivot about its pivot pins disposed on the center thereof, a movable member including a first trapezoidal recess and a secon |
| 4729500 |
Construction of a tape guide roller for a videocassette recorder |
March 8, 1988 |
| A tape guide roller formed from a resin for a videocassette recorder comprises a roller body, a pair of flanges disposed at ends of the roller body, the pair of flanges being adapted to hold the roller body at a predetermined position on a shaft which is mounted to a body of the video |
| 4725703 |
Turn table for use in a microwave range |
February 16, 1988 |
| A turntable for use in a microwave oven which comprises a first rotatable axle secured to the plate of the turntable and disposed within an annular holder, the first rotatable axle including a cavity disposed along its center, an actuating gear having a shaft extended therefrom for being |
| 4724104 |
Humidifier provided with a purifier |
February 9, 1988 |
| The present invention relates to a humidifier in which feed water is effectively fed into a purifier. The humidifier according to the invention comprises a ventilation tube through which the air between a valve body and the level of purified water in a humidifying cistern is outwardly |
| 4717859 |
Polychromatic electro luminescence display device |
January 5, 1988 |
| The present invention relates to an electroluminescent display device with polychromatic emissions which comprises one photo electroluminescent layer containing a composition of Na.sub.0.5 Tb.sub.0.25 Eu.sub.0.25 WO.sub.4 which is combined with an existent fluorescent layer, the thicknes |
| 4716469 |
Circuit for eyesight protection in a television set |
December 29, 1987 |
| This disclosure depicts a circuit for protecting eyesight from the screen of a TV set. A infrared transmitter is provided on a side of the front of the TV set so that pulse signals therefrom are received on a receiving-amplifying portion for remote control already installed in the TV |
| 4711410 |
Reel-driving device for a videocassette recorder |
December 8, 1987 |
| A reel-driving device for a videocassette recorder which comprises a clutch disposed between a supply reel and a take-up reel in order to transmit a drive force from a power source to a selected one of the reels via an idler pivotly mounted to the clutch, the radius ratio between the sup |
| 4709289 |
Tape guide construction of a head drum of a videocassette recorder |
November 24, 1987 |
| A tape guide construction of a head drum of a video-cassette recorder comprising a circular wire fixedly engaged in a V-shaped groove formed at an outer peripheral surface of a lower drum of the head drum. A portion of the peripheral surface of the circular wire is disposed outside the |
| 4703225 |
Plasma display device |
October 27, 1987 |
| The present invention relates to a plasma display device which is actuated by a low starting voltage while producing high brightness, which comprises aluminum strips with thickness of about 500 A deposited on dielectric glass layers, in parallel to existing column and row electrodes |
| 4700034 |
Electromagnetic energy seal of a microwave oven |
October 13, 1987 |
| A microwave leakage shielding apparatus of microwave oven which can cut off the leakage of high-frequency electromagnetic wave as well as that of second harmonic. The slot antenna is installed in such a manner that a serial resonant circuit is provided within the attenuating cavity of th |
