| Patent Number |
Title Of Patent |
Date Issued |
| 4193016 |
Electron gun shield cup providing tube evacuation bypass vents |
March 11, 1980 |
| This disclosure depicts for use in a television picture tube having a bulb with a neck at the rear end thereof, a novel electron gun located in closely confined relationship in the neck. The gun has at least one cathode having an electron emissive coating, an apertured, substantially |
| 4191973 |
Shielding means for television picture tube electrical _feed-through receptacles |
March 4, 1980 |
| A television cathode ray picture tube having a glass envelope including a funnel and a faceplate generates X-radiation internally and incidental to its operation. The funnel has a wall in which is sealingly embedded open-side-out a cup-like high-voltage receptacle having an inwardly |
| 4191909 |
Color CRT with shadow mask having peripherally grooved skirt |
March 4, 1980 |
| This disclosure depicts a CRT (color cathode ray tube) of the shadow mask type, and an improved shadow mask therefor. The CRT has a screen and an electron gun assembly for generating a plurality of electron beams. The improved shadow mask has a dished perforate central portion for se |
| 4190862 |
Video carrier recognition system |
February 26, 1980 |
| A video carrier recognition system for use with a signal seeking television receiver tuner or the like includes a plurality of detectors for recognizing certain conditions indicating that the receiver is appropriately tuned to a video carrier signal. The conditions comprise AFC syste |
| 4187537 |
Full-wave rectifier |
February 5, 1980 |
| A full-wave rectifier is disclosed for rectifying low level A.C. input signals. In the disclosed embodiment, the rectifier includes first and second differential amplifiers, each constructed of a pair of transistors. One transistor in each pair of transistors has a D.C. operating point |
| 4187469 |
Limited channel television receiver with organized memory |
February 5, 1980 |
| A two-mode limited channel television receiver includes a memory address counter for scanning the locations of a limited position memory in response to generation of a channel number by a channel number counter. Channel numbers and corresponding tuning information may be programmed i |
| 4186414 |
Self-contained adjustable yoke mounting system |
January 29, 1980 |
| A self-converging adjustable yoke assembly comprises a lightweight plastic liner, sandwiched between saddle type horizontal coils and toroidal type vertical coils, with an attached rear housing for clamping the assembly on the neck of a picture tube. The periphery of the liner has three |
| 4184121 |
Wide window tuning system |
January 15, 1980 |
| A two mode tuning system includes channel counters for determining system tuning by counting the LOF, a channel number comparator comparing the derived channel number with a desired channel number and PLL including a phase comparator for comparing equality pulses from the channel number |
| 4183125 |
Method of making an insulator-support for luminescent display panels and the like |
January 15, 1980 |
| This disclosure depicts a method of making an extended-area cellular spacer-support for separating electrodes in a luminescent display panel and/or for providing support against atmospheric pressure on the panel. The method comprises forming a stack of mutually registered open lattices |
| 4181891 |
Channel change indication circuit |
January 1, 1980 |
| A limited-channel tuning system for a television receiver includes a memory whose activation time is directly related to its useful life. A channel address information means is coupled through an encoder to a series of flipflops which supply a first set of inputs of a corresponding plura |
| 4181870 |
Assembly of electron guns having different gamma values |
January 1, 1980 |
| This disclosure depicts a novel apparatus for use in a color television picture tube having a faceplate attached to the mouth of a funnel portion. The faceplate has an electron excitable phosphor screen deposited on the inner surface thereof, the phosphor screen having groups of at least |
| 4177453 |
Digital remote control system with improved noise immunity |
December 4, 1979 |
| A remote control receiver for selectively actuating a plurality of functions, each function uniquely corresponding to control signals lying in a respective band of frequencies. The function determining control signal is supplied to a digital counter which, during each of a continuous |
| 4173737 |
Limited position, non-volatile memory tuning system |
November 6, 1979 |
| A limited-position television tuning system includes a read-only memory (ROM) dedicated to VHF channel coarse tuning information. UHF coarse tuning information and VHF/UHF fine tuning information are contained in an electrically alterable ROM (EAROM). Equalization information for equ |
| 4172309 |
Method of correcting deflection defocusing in self-converged color CRT display systems |
October 30, 1979 |
| This disclosure pertains to the production of self-converged color CRT display systems, and in particular to a method of reducing the effects of off-axis deflection defocusing of electron beams in such systems. The disclosed method comprises installing in the neck of each color CRT bulb |
| 4169168 |
Process for manufacturing microporous cathode coatings |
September 25, 1979 |
| A process for depositing a microporous electron-emissive cathode coating material by spray means is depicted. The process comprises preheating the cathode assembly and spray means by enclosing the assembly and spray means in a cathode assembly spray chamber having a laminar flow of gas t |
| 4168452 |
Tetrode section for a unitized, three-beam electron gun having an extended field main focus lens |
September 18, 1979 |
| This disclosure depicts an electron gun especially for use in a color cathode ray tube of the small-neck, shadow-mask type. The gun design is also applicable to other television cathode ray tube displays that require a gun that provides small, symmetrical spots of uniform cross-section, |
| 4168010 |
Implosion protected color cathode ray tube bulb and bulb components |
September 18, 1979 |
| This application depicts a color cathode ray tube bulb and bulb components having a novel protection system, and a method of installation. In one embodiment disclosed, a color CRT bulb comprises a glass faceplate hermetically sealed to a glass funnel along a sealing interface. The bulb |
| 4165489 |
Channel change indication circuit with delayed memory activation |
August 21, 1979 |
| A limited-channel television tuning system includes a MNOS memory for storing tuning voltage information. Memory locations are addressed by channel address means through an encoder-decoder arrangement. The encoder supplies a clock-controlled channel address register for transferring the |
| 4164712 |
Continuous counting system |
August 14, 1979 |
| A continuous counting system includes a multistage binary counter for deriving the frequency of an input signal by counting the cycles thereof occurring during predetermined timing intervals. A control circuit, responsive to the input signal and to a timing reference signal, develops |
| 4164682 |
Shadow mask suspension system having bracket means integrally formed from the shadow mask assemb |
August 14, 1979 |
| This application depicts a rectangular-type color cathode ray tube having a rearwardly flanged faceplate for suspending an approximately rectangular shadow mask assembly on the faceplate flange at a predetermined spacing from a screen-bearing surface of the faceplate. The mask assembly |
| 4163259 |
Windowed tuning system with synchronous detector |
July 31, 1979 |
| A television receiver includes automatic fine tuning, synchronous detection, and a "window" type tuning system. The synchronous detector has a detector oscillator which is tunable to the nominal frequency of an intermediate frequency signal derived from a received television signal. |
| 4161699 |
Second derivative memory-saving all channel digital tuning system |
July 17, 1979 |
| A tuning system for a television receiver includes fine tune memories and tuning information memories, the latter having reference channel nominal tuning information for each of the various frequency bands, first increment tuning information for each frequency band and second increment |
| 4161673 |
Arc suppression and static elimination system for a television CRT |
July 17, 1979 |
| For use in a cathode ray tube, an electron gun for generating at least one electron beam, the gun being characterized by having an elongated discrete arc suppression resistor mounted on an anode electrode of the gun in cantilever fashion at a point spaced from the beam so as not to inter |
| 4160993 |
VIR line recognition system |
July 10, 1979 |
| A television receiver includes a recognition system identifying the 19th horizontal scanning line of each field of a transmitted television signal for coupling a vertical interval reference (VIR) signal to suitable signal processing circuitry within the receiver. The recognition system i |
| 4160278 |
Fine tuning indicator for TV with synchronous detector |
July 3, 1979 |
| A fine tuning indicator for a television receiver uses a synchronous detector for generating a control voltage indicative of the tuning accuracy. The control voltage is sensed by an indicating circuit which produces a visual indication of the tuned or mistuned condition of the receiv |
| 4158882 |
Full-wave rectifier circuit |
June 19, 1979 |
| A full-wave rectifier circuit useful in a low level envelope type video detector or the like comprises a symmetrical network having a pair of input terminals and an output terminal, the output terminal developing a unidirectional flow of current in response to the application of an a |
| 4158157 |
Electron beam cathodoluminescent panel display |
June 12, 1979 |
| This disclosure depicts an image display panel partitioned into two distinct sections comprising a high voltage front section and a low voltage rear section. An electron source means located in the low-voltage rear section is disposed along a row-wise edge of the panel for generating |
| 4156199 |
Apparatus for shifting a tuning window |
May 22, 1979 |
| A television window tuning system has duty cycle adjustment means for selectively varying the duty cycle of the tuner associated local oscillator signal. Increasing the duty cycle of the local oscillator signal effectively shifts the tuning window in frequency space in one direction |
| 4156197 |
High speed phase locked loop tuning system |
May 22, 1979 |
| An all-channel PLL tuning system includes LOF counters, a comparator producing an equality pulse each time the LOF count matches a preselected channel number count and a digital phase-frequency comparator comparing the equality pulses with reference pulses. High speed tuning is accom |
| 4153857 |
Television cathode ray tube having getter flash tolerant internal resistive element |
May 8, 1979 |
| The disclosure depicts in a television cathode ray tube having a getter containing a vaporizable, electrically conductive, gas adsorptive getter material, an improvement comprising an electrically resistive element for arc suppression, an electrically resistive element for arc suppressio |
| 4152654 |
Memory-saving all channel digital tuning system |
May 1, 1979 |
| A tuning system for a television receiver includes fine tune memories and tuning information memories having reference channel nominal tuning information for each frequency band and increment tuning information representing the tuning voltage differences between successive channels. |
| 4152653 |
Integrated mixer arrangement |
May 1, 1979 |
| A single balanced mixer for use with a superheterodyne receiver or the like comprises an integrated structure characterized by a pair of opposed capacitive plates, a first mixing diode connected between the plates and a second mixing diode connected between one of the plates and a point |
| 4152621 |
Electron discharge device |
May 1, 1979 |
| 1. An electron-discharge device comprising: an evacuated envelope; a cold electrode supported within said envelope; a thermionic filamentary cathode; and means including at least one spring member affixed to said cathode and supported from said envelope for normally supporting said c |
| 4151559 |
Electronic television tuner interface circuit |
April 24, 1979 |
| An electronic television tuning system includes a channel number selection integrated circuit chip interfaced with a channel computer integrated circuit chip by a plurality of data lines. The channel number selection chip, in response to the partial or complete entry of a channel number |
| 4148068 |
Television synchronizing signal separating circuit |
April 3, 1979 |
| A television receiver has a tuner, an intermediate frequency amplifier, and a detector for recovering a composite signal including horizontal and vertical display synchronization components and picture information. Horizontal display means produce a long-duration trace signal and sho |
| 4144498 |
Television tuning method and apparatus for tuning employing slope factor derivation |
March 13, 1979 |
| A tuning system for a television receiver includes fine tune memories and tuning information memories having reference channel nominal tuning information for each frequency band and nominal tuning information for each channel. Accumulator means subtract the nominal tuning information |
| 4143509 |
Electronic time-keeping system with electro-mechanically-driven analog display and electrical in |
March 13, 1979 |
| A time-keeping system of the type having an electromechanically driven, analog-type time display, has a purely electrical integral hour reset feature. The system comprises an analog time display including hour and minute hands driven through a mechanical transmission by a fast-response |
| 4143346 |
Self converging, north/south pin cushion corrected hybrid yoke |
March 6, 1979 |
| A deflection yoke for a television picture tube having coplanar in-line electron guns includes vertical and horizontal coil windings selected for providing self-convergence and north/south pin cushion correction. The desired characteristics are achieved by winding the vertical coil for |
| 4143298 |
Television cathode ray tube having a voltage divider providing temperature-invariant voltage and |
March 6, 1979 |
| An improved internal voltage divider for use in a television cathode ray tube is disclosed that provides one or more temperature-invariant voltages. The tube is subject to internal spatial temperature patterns fixed or varying with time which are incidental to tube warm-up and operat |
| 4143294 |
Getter support means for television cathode ray tubes |
March 6, 1979 |
| This disclosure depicts getter support means for use in television cathode ray tubes. A getter support means is structured so as to be retained in the tube by the outward, self-retaining pressure of an expansible member on the inner surface of the neck adjacent to the junction of the nec |
| 4142157 |
Tuning system equalized with the slope factor of the tuning curve |
February 27, 1979 |
| A tuning system for a television receiver includes a channel number generator coupled to nominal tuning memories, fine tune memories and slope factor memories. The memory outputs are coupled to a corresponding plurality of comparators which are also coupled to counters for deriving p |
| 4142098 |
Optical readout for reflective video discs |
February 27, 1979 |
| The invention concerns an optical detection system for retrieving information stored in a record track which effectively constitutes a sequence of light scattering or light deflecting elements. An objective lens, disposed above the record track, forms a reading spot for interrogating |
| 4139797 |
Color television screen and shadow mask assembly having increased tolerance to radial registrati |
February 13, 1979 |
| This disclosure depicts a novel apparatus for use in a shadow mask type color television picture tube having a funnel and a faceplate attached to the mouth of the funnel. The faceplate has an electron excitable phosphor screen having triads of red, green and blue phosphor elements deposi |
| 4138636 |
Voltage regulating transformer having EI laminations and two center legs of different reluctance |
February 6, 1979 |
| A shell-type voltage regulating transformer includes a magnetic core comprising a stack of modified EI laminations having a center leg forming two sections. One of the center leg sections defines a low reluctance magnetically saturable path while the other section defines a high relu |
| 4137486 |
Electron beam cathodoluminescent panel display |
January 30, 1979 |
| This disclosure depicts an image display panel partitioned into two distinct sections comprising a high voltage front section and a low voltage rear section. An electron source means located in the low-voltage rear section is disposed along a row-wise edge of the panel for generating |
| 4137480 |
Television picture tube with cathode coating erosion suppression |
January 30, 1979 |
| This disclosure depicts a novel electron gun having at least one cathode having an electron emissive coating, a forward element and a plurality of electrodes interspaced between the cathode and the forward element. The electrodes and forward element each have at least one aperture wherei |
| 4135211 |
Rectangular color cathode ray tube bulb with integral corner bosses for enhanced implosion prote |
January 16, 1979 |
| This disclosure depicts an implosion-protected, rectangular-type color cathode ray tube bulb comprising a rectangular glass faceplate of the type having a viewing window and a flange extending rearwardly therefrom, to which flange is sealed a mating funnel. The bulb has a tension band sy |
| 4132459 |
Method for cathode coating erosion suppression for a television tube |
January 2, 1979 |
| This disclosure depicts a novel method for use in the manufacture of a color television picture tube having a narrow neck wherein the neck has a front end joined with a flared portion of the tube and a rear end having an axially extending tubulator. The tube also has an electron gun havi |
| 4132341 |
Hybrid circuit connector assembly |
January 2, 1979 |
| A method of forming a connector assembly in association with a hybrid circuit by soldering a plurality of relatively rigid connectors thereto, the resulting assembly being capable of self-supporting the hybrid circuit without the use of ancillary mechanical supporting devices when plugge |
| 4130777 |
Scanning means and method for a plasma-sac-type gas-discharge image display panel |
December 19, 1978 |
| This disclosure sets forth means and method for scanning a high voltage cathodoluminescent television, alpha-numeric or other image display panel having a row and column array of individually controllable plasma-sac-type gas-discharge display elements. The panel envelope contains an ioni |
