Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 4636735 | Duration-sensitive digital signal stretcher Clocked control signals are applied from a source to the input of delay means having a plurality of successive signal takeoff points, with the delay between successive ones of said takeoff points being the same (e.g., a period at the signal clocking frequ... | 01/13/1987 |
| 4634984 | Duration-sensitive digital signal gate One-bit stream of clocked control information is applied to the input of delay means, having a succession of signal takeoff points, with the delay between successive takeoff points being the same (e.g., twice a period at the clocking frequency, fCL | 01/06/1987 |
| 4628346 | Electrical servo system having manual override affecting servo loop gain In a color television receiver, color reference oscillations, developed by a VCO under AFPC loop control, are supplied to a variable phase shifter. A phase detector, responsive to the phase shifter output and to the burst component of received color telev... | 12/09/1986 |
| 4620133 | Color image display systems Compact deflection yoke in self-converging display system encircles adjoining segments of neck and funnel sectons of color picture tube having close beam spacing (200 mils) in electron gun to achieve low S-spacing dimension between converging beams in def... | 10/28/1986 |
| 4618882 | Digital correlation indicator and hanging dot reduction system employing same In a color TV receiver, a first digital signal of "m" bits represents high frequency component of combed luminance signal, and a second digital signal of "m" bits represents combed chrominance component. The "k" most significant bits of the first signal (... | 10/21/1986 |
| 4617587 | Recovery system for a control loop Non-inverting amplifier, with bandpass filter in regenerative feedback path, forms color reference oscillator in a color TV receiver. Phase shift circuit, responsive to an oscillator output, supplies signals to a first phase shifted signal amplifier, whic... | 10/14/1986 |
| 4616254 | Hanging dot reduction system Control signal generator is responsive to the output of a pair of correlation indicators. One correlation indicator provides an indication of the presence or absence of correlation between high frequency components derived without difference in delay from... | 10/07/1986 |
| 4611239 | Oscillator synchronizing system for eliminating static phase errors Non-inverting amplifier, with bandpass filter in regenerative feedback path, forms color reference oscillator in a color TV receiver. Phase shift circuit, responsive to an oscillator output, supplies signals to a first phase shifted signal amplifier, whic... | 09/09/1986 |
| 4611240 | Chrominance processor control system In a color TV receiver, a color AFPC loop, responsive to line rate synchronizing bursts of subcarrier frequency derived from the output of a first of a pair of cascaded chrominance signal amplifiers, controls the frequency and phase of an output of a VCO.... | 09/09/1986 |
| 4583121 | Backporch gating pulse generator subject to disabling during vertical sync interval In a TV receiver, a line-rate gating pulse generator includes a source of line-rate timing pulses of "backporch" timing relative to the horizontal blanking intervals of received TV signals. Normally, the time constant of a capacitor charging circuit, enab... | 04/15/1986 |
| 4580068 | Keyed low impedance voltage source First and second transistors of the same conductivity type have their emitter-collector paths serially disposed across a DC operating potential source, with the emitter electrode of the first transistor directly connected to the collector electrode of the... | 04/01/1986 |
| 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 |
| 4554577 | Keyed DC stabilization system with protection from error introduction during vertical sync interval DC stabilization system for a color TV receiver includes three control loops, each including a keyed comparator for comparing a respectively different one of a set of blue, green and red color signals with a common reference voltage during keying periods ... | 11/19/1985 |
| 4549202 | Trilevel sandcastle pulse encoding/decoding system A color TV receiver is provided with an encoding/decoding system for a trilevel sandcastle pulse train, exhibiting a middle pulse level during recurring kinescope bias control intervals, and comprising excursions between a base level, a low pulse level, a... | 10/22/1985 |
| 4528527 | SECAM Modulator A SECAM modulator has a frequency control loop for maintaining constant average frequency of a VCO during a scanning line. However, this can cause varying deviation of the VCO. Therefore a second control loop is provided to control the voltage of the VCO ... | 07/09/1985 |
| 4516153 | Composite video signal processing apparatus providing amplitude equalization In a color TV receiver, a composite video signal processing circuit serves to prepare the signal input to a CCD comb filter, and includes a transistor phase splitter with a first load resistor connected to the transistor's collector electrode and a second... | 05/07/1985 |
| 4509080 | Video signal peaking system In the luminance channel of a color TV receiver, a horizontal peaking signal representative of the difference between delayed and undelayed luminance signals is subject to coring, with the level of coring subject to variation. Residual peaking signal rema... | 04/02/1985 |
| 4500910 | Hue control system Quadrature-related outputs of synchronized color reference oscillator at +(R-Y) and +(B-Y) phases are applied to a first matrix to develop a first matrixed signal of a third intermediate phase. Additional matrixing operations on the oscillator outputs dev... | 02/19/1985 |
| 4485353 | PLL Oscillator synchronizing system with matrix for phase correction Color reference oscillator in a color television receiver comprises a non-inverting amplifier, with positive feedback from its output conveyed via a crystal filter to its input. A quadrature phase shift network, coupled to the filter output, develops phas... | 11/27/1984 |
| 4485354 | PLL Oscillator synchronizing system with DC control of free-running frequency Color reference oscillator comprises a non-inverting amplifier, with positive feedback via a crystal filter linking its output and input. A quadrature phase shift network, coupled to the filter output, delivers phase shifted signals to a pair of independe... | 11/27/1984 |
| 4464633 | Amplifier incorporating gain distribution control for cascaded amplifying stages A pair of differential amplifier stages are connected in cascade to form a multistage amplifier for signal amplification purposes. The base-emitter paths of current source transistors which establish the operating currents for the respective stages are co... | 08/07/1984 |
| 4441121 | Adjustable coring circuit Signals to be cored are applied to the inputs of a linear signal amplifier, and of a multistage limiting amplifier having cascaded input and output amplifying stages. A cored version of the signals, corresponding to the difference between a linearly trans... | 04/03/1984 |
| 4438451 | Dual-standard SECAM/PAL color TV receiver with automatic control of operating mode Dual-standard (PAL/SECAM) color TV receiver includes circuitry for automatically controlling the receiver's operating mode in accordance with recognition of the SECAM or PAL format of the received signals. A first sample-and-hold circuit monitors the outp... | 03/20/1984 |
| 4438454 | Adjustable coring circuit permitting coring extinction Adjustable coring circuit includes linear amplifier and multistage limiting amplifier responsive to input signals from a common source. Limiting amplifier includes an input stage receiving operating current from a first current source transistor, in casca... | 03/20/1984 |
| 4437124 | Dynamic coring circuit In a television receiver, a horizontal peaking signal is formed for addition to a luminance signal to enhance its horizontal detail by relatively boosting high frequency components of the luminance signal. The peaking signal is subject to a coring action ... | 03/13/1984 |
| 4408229 | Noise sensitivity reduction apparatus for a TV receiver AGC system The composite video signal input to the voltage comparator of a TV receiver AGC system is subjected to the filtering action of a low pass filter for noise suppression purposes. A wideband signal path, bypassing the low pass filter, is enabled during trail... | 10/04/1983 |
| 4404584 | Signal processing apparatus effecting asymmetrical vertical peaking First 1-H type comb filter provides an output representative of the sum of current line video signals and preceding line video signals, which is delivered to an adder via a wideband signal path, as a wideband combed luminance signal input occupying a give... | 09/13/1983 |
| 4400720 | Dynamic de-emphasis compensation system In color TV receiver for SECAM-encoded signals, a single FM detector, subject to line-by-line switching of its center frequency tuning, achieves sequential demodulation of respective SECAM subcarriers. For the purpose of using an identification system of ... | 08/23/1983 |
| 4388649 | AFT Lockout prevention system Television receiver employs a synchronous video detector system, and includes an AFT detector responsive to carrier waves supplied by reference amplifier of synchronous detector system. A peak detector, independent of the synchronous video detector and th... | 06/14/1983 |
| 4378528 | Gain-controlled amplifier system A gain-controlled amplifier is provided, including first and second common emitter-coupled amplifying transistors for receiving differential input signals. The emitter circuits of the amplifying transistors include first and second controlled resistance d... | 03/29/1983 |
| 4371891 | Chrominance signal processor A frequency selective chrominance signal translating circuit for use in a color television receiver employing a comb filter is disclosed. The comb filter responds to switching signals for providing separate outputs from which the luminance and chrominance... | 02/01/1983 |
| 4371793 | Dual-mode control signal generating apparatus Dual-mode control signal generator, responding to alternative forms of mode selection signal input by generating different arrays of control signal outputs, includes a trio of voltage comparators. In first form, mode selection signal consists of pulse tra... | 02/01/1983 |
| 4367491 | Video signal recovery system Sync-positive and sync-negative video signals appearing across load resistors of synchronous video detector employing array of NPN transistors are coupled via respective voltage dividers to complementary inputs of differential amplifier employing NPN tran... | 01/04/1983 |
| 4367509 | Anti-latch circuit for power output devices using inductive loads A power output circuit is provided which is protected against latching due to voltage pulses developed by an inductive load. The circuit comprises a transistor constructed on a monolithic integrated circuit chip including a grounded semiconductor substrat... | 01/04/1983 |
| 4365270 | Dual standard vertical deflection system Dual standard TV receiver includes means for identifying field frequency of received TV signals. A switching system responsive to output of field frequency identifying means alters circuitry of receiver's vertical deflection system in a manner maintaining... | 12/21/1982 |
| 4357586 | Color TV display system A self-converging deflection yoke having toroidally-wound vertical deflection coils incorporates a pair of magnetically permeable field formers mounted on either side of the yoke. The field formers shunt a portion of the external field flux to the vicinit... | 11/02/1982 |
| 4357623 | SECAM Identification system Color TV receiver subject to reception of SECAM signals incorporates dual-mode identification system for identifying and correcting an incorrect mode of line-by-line switching in SECAM demodulation apparatus. In one (horizontal) mode of operation, identif... | 11/02/1982 |
| 4357556 | Television display system employing permeable correctors for a deflection yoke A correction apparatus for a deflection yoke for use with a color television kinescope comprises a plurality of magnetically permeable rods disposed at the rear of the yoke. Each of the rods comprises a short portion disposed parallel to the neck of the k... | 11/02/1982 |
| 4350995 | Self-limiting video signal peaking circuit A circuit for peaking video signals is disclosed. The circuit includes a differential amplifier which produces a peaking component at an output, and a signal delay line for determining the frequency at which maximum peaking occurs. The delay line input is... | 09/21/1982 |
| 4351003 | Automatic video signal peaking control A circuit for automatically controlling the high frequency peaking content of an image representative video signal processed in the luminance signal path of a television receiver is disclosed. The luminance path also includes a linear phase network for ge... | 09/21/1982 |
