Quotables
"The horse is here to stay, the automobile is only a novelty - fad."
President of Michigan Savings Bank ; 1903
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7262563 | Method and apparatus for providing a dynamic rotational alignment of a cathode ray tube raster A method and apparatus used to step and correct the position of raster lines in a sinusoidal or zig-zag deflection system. By combining the magnetic flux generated with a rotation “twister” coil and a vertical deflection coil, scan lines can be uniformly spaced ... | 08/28/2007 |
| 7233118 | Line deflection circuit for a television receiver A line deflection circuit for a television receiver having a deflection coil, an S capacitor for S correction of the linearity of the deflection, the capacitor being connected in series with the deflection coil, and having means for changing over the linearity of th... | 06/19/2007 |
| 7230584 | Projector systems with reduced flicker An image display system is disclosed comprising an output unit and a means for displaying a plurality of color frames on the output unit. Each color frame is subpixelated and displayed over time. One of the color planes is a color plane of a low luminance color, and... | 06/12/2007 |
| 7221112 | Cathode ray tube display apparatus A cathode ray tube display apparatus having a fly back transformer (FBT) to induce and output high voltage, the CRT apparatus including: a power controller controlling source power input into the FBT; a DC power detector to output a shut-off signal to shut off an op... | 05/22/2007 |
| 7187371 | Display apparatus A display apparatus having a high voltage FBT driving circuit includes a transformer having a primary and a secondary coil, a high voltage detector to detect an output voltage of the secondary coil, a high voltage compensator to output a high voltage compensating si... | 03/06/2007 |
| 7176642 | Cathode ray tube display apparatus A CRT electric field shield display apparatus with an FBT having a plurality of high voltage output terminals, includes an offset voltage generator generating an offset voltage to offset an electric field due to high voltages outputted from the plurality of high vol... | 02/13/2007 |
| 7151394 | Phase shifting and PWM driving circuits and methods The present invention provides an inverter controller comprising a drive circuit that generates a plurality of switch drive signals for inverter applications. In some exemplary embodiments, the drive circuit operates by reversing the command level of an error signal... | 12/19/2006 |
| 7142567 | Rate generator in a video on demand system having multiple constant bit rate data A rate generator for generating a plurality of different frequencies that represent video requests in a video on demand (VOD) system. The rate generator comprises a plurality of parallel groups, each group comprising a phase accumulator module having a plurality of ... | 11/28/2006 |
| 7098613 | High voltage deflection circuit A resonant pulse voltage having a positive polarity is applied by a first resonant circuit and a third resonant circuit to a horizontal deflection coil included in the first resonant circuit, and a resonant pulse voltage having a negative polarity which is opposite ... | 08/29/2006 |
| 7079297 | Optical scan device, image position calibration method, and image display device An optical scanning device, a correction method of the position of an image, an image display method, and an image display device able to improve a light projection efficiency and lower the electric power and able to reduce error of the projection image along with a... | 07/18/2006 |
| 7075803 | Frequency stabilization technique for self oscillating modulator With self oscillating pulse width modulators, using a hysteretic comparator to change the output duty cycle according to the input signal, as often used for example for Class-D amplifiers or switching regulators, the frequency varies with output power and supply vol... | 07/11/2006 |
| 7071636 | Scanning circuit of electron tube displays The invention concerns a control circuit for an electron tube display comprising a deflection coil, the deflection coil being part of a scanning circuit and being coupled to a coil of a transformer powering a high voltage generator used to accelerate an electron bea... | 07/04/2006 |
| 7064501 | Sawtooth line circuit for a cathode ray tube A circuit arrangement is described for generating a sawtooth current in a cathode ray tube deflection coil. The circuit arrangement has a first and a second multiresonant section. The sections are arranged in series. The cathode ray tube deflection coil is part of t... | 06/20/2006 |
| 7061192 | Switching-type vertical deflection output circuit A switching-type vertical deflection output circuit comprises: an output-stage circuit constituted of first and second diodes and first and second switching elements, a smoothing circuit, a vertical deflection coil, a reference vertical sawtooth voltage generation u... | 06/13/2006 |
| 7052146 | Replaceable color wheel A projector, comprising a user replaceable color wheel. ... | 05/30/2006 |
| 7035120 | Driving circuit employing synchronous rectifier circuit An example synchronous rectifier circuit includes a transformer having a primary winding and a secondary winding which are insulated from each other; a main switch provided at a primary side of the circuit, which includes the primary winding; a rectifying FET provid... | 04/25/2006 |
| 7030575 | Deflection supply voltage feedback control in conjunction with frequency change A video display includes a scanner operable at a first frequency and a higher second frequency. A switch mode power supply drives a transformer with three secondaries. First and second rectifiers & filters are associated with the first and second secondaries. A rect... | 04/18/2006 |
| 7023149 | CRT vertical scanning circuit with a low power standby The invention concerns a scanning circuit, comprising a power supply providing a negative voltage on a first terminal (Tdown), an intermediate voltage on a second terminal (Gnd) and a positive voltage on a terminal of a switch (S), the other terminal of the switch b... | 04/04/2006 |
| 7005813 | Booster circuit for a pre-drive circuit of a brushless direct current single-phase motor A booster circuit for a pre-drive circuit of a brushless direct current single-phase motor. When a series pair of power FETs of the drive circuit turn on, one boost control switching element of the pre-drive circuit turns on, another series pair of power FETs of the... | 02/28/2006 |
| 6970503 | Apparatus and method for converting analog signal to pulse-width-modulated signal A circuit for converting an analog signal to a discrete pulse-width-modulated (PWM) signal uses a delta-sigma amplifier and a discrete PWM stage to produce a discrete PWM output signal having lower in-band signal noise then a PDM system and a lower signal distortion... | 11/29/2005 |
| 6940732 | Synchronous rectifier circuit There is provided a synchronous rectifier circuit that makes it possible to secure sufficient driving voltage for the rectifier switch regardless of the voltage of the secondary winding. In this synchronous rectifier circuit, the primary winding is insulated from th... | 09/06/2005 |
| 6903943 | Switching circuit This switching circuit includes a transformer having primary and secondary windings insulated from each other; a voltage-driven switching element which is connected in series to one of the primary and secondary windings and has a control terminal for controlling a s... | 06/07/2005 |
| 6819064 | Display system A display system capable of raising limits on the response speed of the spatial light modulator and the rate of pulse-width modulation signal transfer is provided at a low cost. The display system comprises: a color switch filter unit used in the sequential color se... | 11/16/2004 |
| 6690126 | Power supplying apparatus for electron gun in CDT Disclosed is a power-supplying apparatus for an electron gun in a color display tube (CDT) provided with an fly back transformer (FBT) having a focus voltage output terminal and an acceleration voltage output terminal, further having a power supplying par... | 02/10/2004 |
| 6667588 | Multi standard television display An image display is operable with video signals having a plurality of scanning frequencies and comprises a cathode ray tube for the display of ones of the video signals. A deflection coil is mounted on the cathode ray tube and a horizontal deflection ampl... | 12/23/2003 |
| 6661188 | Cathode ray tube filament voltage control with a multifrequency deflection scanner A power supply for a video display tube includes a deflection transformer with a primary winding powered with a scan voltage which has a first value when displaying signal according to a first video standard and a second voltage when displaying video acco... | 12/09/2003 |
| 6642676 | Electromagnetic quadrupole circuit which independently corrects ac and dc components of correction current An electromagnetic quadrupole circuit capable of always performing the optimal correction of the spot form is provided with: a current detecting section 20 for detecting the peak value and bottom value of current flowing along an electromagnetic quadrupol... | 11/04/2003 |
| 6605909 | Dynamic horizontal linearity correction A horizontal deflection circuit output stage includes a trace capacitor for developing a trace voltage. A retrace capacitance is coupled to a deflection winding to form a retrace resonant circuit with the deflection winding, during a retrace interval of a... | 08/12/2003 |
| 6600277 | Power supply The invention relates to a power supply (9) for a deflection circuit (1), that comprises a deflection coil (2) for connection to a picture tube, a drive circuit (4,5,6) connected to the deflection coil (2), and a deflection controller (3) for controlling ... | 07/29/2003 |
| 6586895 | Raster distortion correction circuit A horizontal deflection circuit includes a horizontal deflection winding coupled to a retrace capacitor to form a retrace resonant circuit. An S-shaping capacitor is coupled to the deflection winding to form a first trace resonant circuit. A first switchi... | 07/01/2003 |
| 6577084 | High voltage flash detection A method and device are described for detecting whether a flash (F) has occurred in the high voltage part of a combined high voltage and horizontal deflection circuit (100) in an apparatus comprising a cathode ray tube (CRT), such as for instance a televi... | 06/10/2003 |
| 6555976 | East-west distortion correction An apparatus for the correction of East-West distortion of images produced on the screen of a picture tube. More particularly, it concerns an electronic circuit for dynamically controlling the AC component of the drive signal to an East-West amplifier (14... | 04/29/2003 |
| 6552504 | Deflection circuit with a feedback controlled capacitive transformation A horizontal deflection circuit includes a first retrace capacitance and a second retrace capacitance. A horizontal deflection winding is coupled to the first and second retrace capacitances to form a resonant circuit, during retrace. A first switching tr... | 04/22/2003 |
| 6479953 | Deflection circuit with a retrace capacitive transformation A horizontal deflection circuit of a video display includes a first retrace capacitance and a second retrace capacitance. A deflection winding is coupled to the first and second retrace capacitances to form a resonant circuit, during retrace. A first swit... | 11/12/2002 |
| 6452347 | Method and apparatus for deflection A primary winding of a transformer is serially connected to a horizontal deflection coil. An amplitude regulating circuit outputs a first correction voltage in response to a voltage generated on a secondary winding of the transformer. A phase regulating c... | 09/17/2002 |
| 6404148 | Switching apparatus for horizontal driving pulse In a horizontal deflection circuit, a waveform response of a horizontal output pulse must be adequately taken into account before and after a switching of the horizontal output pulse so that the waveform does not lack in shape and does not lose continuity... | 06/11/2002 |
| 6337545 | Apparatus and method for generating voltage for driving cathrode ray tube A CRT driving voltage generating apparatus which can be realized and integrated at low cost, and can prevent breakdown and malfunction of circuits by actively adapting to a change in the frequency of a horizontal synchronous signal, and a CRT driving volt... | 01/08/2002 |
| 6323606 | Monitor deflection circuit A monitor deflection circuit includes a bipolar power transistor for applying power from a high voltage supply to a horizontal deflection coil. The monitor deflection circuit further includes a base drive circuit for selectively turning the bipolar power ... | 11/27/2001 |
| 6297602 | High voltage regulation by switching retrace capacitors A circuit for regulating an anode voltage in an information display apparatus. A horizontal deflection circuit has trace and retrace modes of operation. The horizontal deflection circuit further has a fixed retrace capacitance; and a series combination of... | 10/02/2001 |
| 6291948 | Image distortion correction circuit An image distortion correction circuit is provided in which a horizontal deflection current (IH) flows through horizontal correction coils (L1, L2) and a vertical deflection current (IV) flows through either of vertical correction coils (L3, L4). The vert... | 09/18/2001 |
