Bizarre Patents
A Christmas stocking having illumination means associated therewith for signalling the arrival of Santa Claus.
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 |
| 7369072 | Method and apparatus for calibrating imaging device circuits A method of operating an imaging device, an imaging device, a camera system including an imaging device, and a processing system including an imaging device for calibrating an analog-to-digital converter of the imaging device to generate a look-up table of correctio... | 05/06/2008 |
| 7061212 | Circuit for maintaining hold-up time while reducing bulk capacitor size and improving efficiency in a power supply A circuit that utilizes most of the energy stored in the bulk capacitor of an AC to DC or DC to DC converter power supply by providing an intermediate converter between a first stage boost converter and a DC-DC converter. When the bulk voltage starts to fall during ... | 06/13/2006 |
| 7012818 | Switching power supply device In a switching power supply device, the operating voltage is supplied to the power-factor improvement control circuit when the switching power supply device is operating under normal operating load. Thereby, the booster chopper circuit is controlled by the power-fac... | 03/14/2006 |
| 6977830 | Power supply apparatus Provided is a power supply apparatus which includes a comparator, an output voltage adjusting unit, a controller, and an output unit. The comparator compares a sensed AC input voltage to a reference voltage and outputs one of first through third comparison result si... | 12/20/2005 |
| 6888483 | High speed analog to digital converter An input stage includes a plurality of arrays of autozero amplifiers arranged in series in each array, wherein each autozero amplifier receives an output of a preceding autozero amplifier, wherein a first autozero amplifier in each array amplifiers receives an input... | 05/03/2005 |
| 6504497 | Hold-up-time extension circuits The stored energy in the energy-storage capacitors of a power supply during the hold-up time is improved by providing two groups of energy storage capacitors, and by connecting one group of capacitors to the input of a hold-up-time extension circuit that ... | 01/07/2003 |
| 6140950 | Delta-sigma modulator with improved full-scale accuracy The invention provides methods and apparatus for improving the full-scale accuracy of an oversampling analog-to-digital converter. In particular, an improved switched-capacitor subtractor/integrator circuit is described that effectively provides a desired... | 10/31/2000 |
| 4926180 | Analog to digital conversion using correlated quantization and collective optimization A 1-bit nonstandard A/D converter for converting a block u of N samples of a continuous time analog signal u(t) into N corresponding 1-bit binary values x, such that a distortion measure of the form d(u,x)=(Au-Bx)T (Au-Bx) is minimized, is impl... | 05/15/1990 |
| 4190825 | Logarithmic analog-to-digital converter An analog-to-digital converter is described in which a sequence of samples of an analog signal is converted into a sequence of binary numbers which appear at the output terminals of a composite counter comprising a first counter and a second counter. The ... | 02/26/1980 |
| 4150367 | Encoder/decoder system employing pulse code modulation A codec is disclosed for encoding analog signals into compressed PCM (CPCM) and conversely for decoding CPCM information into analog signals. The signal to be encoded is compared with the decaying voltage on a capacitor, initially charged to a fixed volta... | 04/17/1979 |
| 4024419 | Apparatus for digitally monitoring an analog parameter of an industrial installation An operating parameter such as temperature or pressure is digitally quantized into a plurality of constant-duration first pulses of corresponding amplitude. The first pulses are employed, over the duration of the first pulses, to continually charge a capa... | 05/17/1977 |
