Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7528671 | Timing generator A timing generator and method of developing drive signals which, when input sync signals are present, delivers the leading and trailing edges of the input pulses directly to a drive output and which generates a free-running signal when input sync pulses are not pres... | 05/05/2009 |
| 7336111 | Fast-locking digital phase locked loop An apparatus for synchronizing signals. For devices, such as memory devices, implementing a synchronization device to synchronize signals, a synchronization device having a delay locked loop coupled to a phase locked loop may be implemented. The delay locked loop is... | 02/26/2008 |
| 7307481 | Minimum synchronization frequency discriminator A minimum frequency synchronization discriminator for use in providing a clock signal for a switch mode power supply automatically detects when the frequency of a sync signal is above a minimum frequency and causes the sync signal to serve as the clock signal for th... | 12/11/2007 |
| 6952139 | Oscillator and electronic apparatus using the same An oscillator operated with an external power source or an external save power source is provided comprising: a clock signal generation unit for generating and outputting a clock signal; a power-on detection unit for detecting the power-on of the external power sour... | 10/04/2005 |
| 6693495 | Method and circuit for a current controlled oscillator A current controlled oscillator is described comprising: a latch comprising two logic inverters to maintain a switch state for a determined duration, the latch having two complementary output voltages; a differential switch pair comprising a first and a s... | 02/17/2004 |
| 6225872 | Resonator having a selection circuit for selecting a resonance mode A resonator includes a resonating device and a selection circuit for selecting a resonance mode. The selection circuit is formed by a first-order oscillator which is provided with a synchronization input and whose output is connected to the excitation inp... | 05/01/2001 |
| 6137373 | Synchronous oscillation circuit operable in self-advancing oscillation during absence of synchronizing pulses An oscillation output generating circuit outputs a voltage V0 as an oscillation output, and a first comparing circuit compares V0 with a constant voltage V1, while a second comparing circuit compares V0 with a constant voltage V2 ( | 10/24/2000 |
| 5022384 | Vibrating/massage chair A device for creating vibration within a chair which provides a therapeutic benefit to users. The chair has a control for adjusting the frequency of the vibrations and the amplitude of the vibrations, providing a wide variety of therapeutic results. The c... | 06/11/1991 |
| 4739306 | Calibrated-weight balance and an analog-to-digital converter in which the balance is employed A calibrated-weight balance for converting an electrical analog signal to a binary signal as applicable to flash-type analog-to-digital converters is composed of a bistable multivibrator having two transistors (15, 16) and two resistors (25, 26). In the r... | 04/19/1988 |
| 4737736 | Method and system for stabilizing and linearizing the output of a voltage-to-frequency converter A system for stabilizing the output of a voltage-to-frequency (V/F) converter having an input terminal and an output terminal. The system comprises a single-shot having an input terminal and an output terminal. The output terminal of the V/F converter is ... | 04/12/1988 |
| 4706044 | Astable multivibrator with duty cycle compensation An astable multivibrator that has an integrating network coupled from the output of one of the transistors for developing an operating potential. The operating potential is coupled to the RC timing networks that interconnect the two transistors such that ... | 11/10/1987 |
| 4644300 | Voltage-controlled variable-frequency pulse oscillator The voltage-controlled variable-frequency pulse oscillator in accordance with the present invention comprises an integrating capacitor, a variable current source for generating charging current for said integrating capacitor in response to the controlling... | 02/17/1987 |
| 4621240 | Temperature compensated oscillator for raster scanned video display In the horizontal drive of a raster scanned video display, a free running astable multivibrator responsive to a synchronization input signal provides a horizontal output signal to horizontal deflection circuitry for synchronizing the video display's raste... | 11/04/1986 |
| 4475427 | Frequency independent ramp generator A tone generator for an electronic musical instrument is operable for producing a highly stable tone signal over an extended frequency range. The tone generator comprises a timing circuit defining first and second time intervals occurring in respective ti... | 10/09/1984 |
| 4412187 | Phase adjustable horizontal oscillator for a data display monitor A horizontal oscillator for a CRT device runs at a rate higher than the line rate, and has a wide lock-in range. The horizontal sync signal is delayed in an adjustable monostable circuit and coupled to the oscillator for allowing a centering adjustment of... | 10/25/1983 |
| 4253117 | Multivibrator synchronization system for video display A system for increasing synchronization signal injection to a free-running multivibrator in the horizontal drive circuit of a video display which enhances synchronization signal frequency capture range is disclosed. A reduction in synchronization input si... | 02/24/1981 |
| 4054847 | Pulse oscillator circuit A pulse oscillator circuit comprises a first pulse oscillator, which may be in the form of a monostable multivibrator, that is capable of generating a first pulse. A second pulse oscillator, which may be in the form of an astable multivibrator, is operati... | 10/18/1977 |
| 4001716 | Variable frequency digital oscillator A digital oscillator with output frequency accurately changeable from one period to the next. A plurality of retriggerable monostable multivibrators having discretely different design pulse widths are OR'd to an output monostable multivibrator having the ... | 01/04/1977 |
