Bizarre Patents
A small umbrella which may be removably attached to a beverage container in order to shade the beverage container from the direct rays of the sun.
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 |
| 7361881 | Ganged detector pixel, photon/pulse counting radiation imaging device A ganged-detector pixel cell is used in a device having an array of such pixel cells to construct an x-ray and gamma-ray radiation energy imaging device. The ganged-detector pixel cell comprises a detector pixel array of two or more detectors pixels disposed on a se... | 04/22/2008 |
| 7327458 | Spectral sensitivity composing system An output current from each pixel sensor can be extracted at an arbitrary ratio by a current divider. An arithmetic control unit sets the dividing ratio in correspondence to a color matching function. The current components are added together by a summing amplifier ... | 02/05/2008 |
| 7214922 | Semiconductor photosensor device and information apparatus with sensitivity region for wide dynamic range A semiconductor photosensor device includes a plurality of photodiode sections, a switch, and an output section is provided. The plurality of photodiode sections have different illuminance-output characteristics. The switch selects any one of the plurality of photod... | 05/08/2007 |
| 7176435 | Image sensor with a voltage switching circuit for low afterglow Disclosed is an image sensor consisting of light sensor circuits arranged to form an array of pixels, each of which produces in a photoelectric converting element a sensor current proportional to the quantity of light falling thereon and converts the sensor current ... | 02/13/2007 |
| 7164443 | Image-sensing apparatus To reduce variations in output current of individual pixels resulting from variations in threshold voltage of the MOS transistor T1 provided in each pixel, the threshold voltage of the MOS transistor T1 of each pixel is measured to acquire compensation... | 01/16/2007 |
| 7119320 | Photo-sensitive element for electro-optical sensors operating under various illumination conditions A photo-sensitive element for electro-optical sensors, includes a photo-sensitive reception member, a current conversion circuit to convert the current generated by the photo-sensitive reception member into a voltage signal, and an amplification and reading circuit.... | 10/10/2006 |
| 7087881 | Solid state image pickup device including an integrator with a variable reference potential In order to provide a solid state image pickup device in which an offset voltage in an image signal from which a noise signal is removed is made to be low, when an image pickup operation is performed while the MOS transistor T1 is ON, after a signal φVD with... | 08/08/2006 |
| 7078668 | Photoelectric conversion apparatus A photoelectric conversion apparatus includes a photoelectric conversion element and a logarithmic conversion unit for converting a signal from the photoelectric conversion element to a logarithmically compressed voltage by means of a diode characteristic of p-n jun... | 07/18/2006 |
| 7030921 | Solid-state image-sensing device In a solid-state image-sensing device, when an image sensing operation is performed in each pixel, a MOS transistor T1 is turned on and a MOS transistor T4 is turned off to make a MOS transistor T2 operate in a subthreshold region. When a reset ... | 04/18/2006 |
| 6967682 | Photoelectric converting device In a photoelectric converting device, a photoelectric current (electric signal) generated by light entering a photodiode PD causes the gate voltage of MOS transistors T1 and T2 to rise, and thus a current corresponding to this gate voltage flows throug... | 11/22/2005 |
| 6693269 | Image reader with DC-coupled integration circuit A photomultiplier which detects feeble light emitted by the irradiation of excitation light on an image carrier carrying an image related to a living organism has an integration circuit is DC-coupled with a photomultiplier to convert a current signal outp... | 02/17/2004 |
| 6677570 | Wide dynamic range optical power detector According to an aspect of the present invention, a power detector including a photodiode and a logarithmic transimpedance amplifier is mounted inside a hermetically sealed package in such a way that the photodiode and the logarithmic transimpedance amplif... | 01/13/2004 |
| 6642500 | Signal processing apparatus which performs logarithmic compressions A signal processing apparatus includes a photoelectric conversion element, a compression device which logarithmically compresses an output from the photoelectric conversion element, an expansion device which exponentially expands an output from the compre... | 11/04/2003 |
| 6479810 | Light sensor system and a method for detecting ambient light A light sensor assembly 10 and a method for detecting ambient light 100 which logarithmically amplifies a first signal which is representative of the certain amount of sensed light and a second offset signal and which adds the logarithmically amplified si... | 11/12/2002 |
| 6362466 | Optical object detection having circuitry applying logarithmic function to the average of filtered output An object detector which illuminates an area with a pulsating beam of light and measures light reflected back by an object in the beam. The light source is chopped by three different chopping frequencies. The light detector uses the highest frequency to r... | 03/26/2002 |
| 6323479 | Sensor pixel with linear and logarithmic response A pixel includes a photon detecting element coupled between a node and a ground, a transistor structure coupled between the node and a first predetermined voltage to provide a logarithmic response region, and a reset transistor coupled between the node an... | 11/27/2001 |
| 6177665 | High-speed logarithmic photo-detector According to the present invention, a photomultiplier tube is used with a high-speed feedback mechanism to continuously modulate the gain of the tube in response to the size of the input signal. The gain of the tube and the anode current are independently... | 01/23/2001 |
| 6002122 | High-speed logarithmic photo-detector According to the present invention, a photomultiplier tube is used with a high-speed feedback mechanism to continuously modulate the gain of the tube in response to the size of the input signal. The gain of the tube and the anode current are independently... | 12/14/1999 |
| 5789738 | Circuit for setting the operating point of an opto-electronic component A circuit is provided for adjusting an operating point of an opto-electronic element having a saturation voltage and which constitutes a component of a receiver for alternating light useful signals and which generates current during a short-circuit operat... | 08/04/1998 |
| 5773816 | Photodetector integrator circuit having a window comparator An improved photodetector integrator circuit is provided having a photodetector, such as a photodiode, which produces photocurrent responsive to incident illumination. The photodetector is coupled to an integrator stage which converts the photocurrent int... | 06/30/1998 |
| 5760389 | Optoelectronic device for measuring the ground contact time and position of a hollow body within a preset region An optoelectronic device for measuring the ground contact time and position of a body within a preset region, having a first measurement bar, which includes one or more infrared light beam transmitters, and a second measurement bar, which is arranged oppo... | 06/02/1998 |
| 5432336 | Detector signal correction method and system Corrective factors are applied so as to remove anomalous features from the signal generated by a photoconductive detector, and to thereby render the output signal highly linear with respect to the energy of incident, time-varying radiation. The corrective... | 07/11/1995 |
| 5365313 | Image forming apparatus for controlling image density using logarithm compressing means A toner depositing amount measuring apparatus for measuring the amount of toner deposited on a photosensitive drum includes a light source for irradiating the surface of the photosensitive drum with light and a photoelectric converting section for receivi... | 11/15/1994 |
| 5291238 | Photometering circuit A photometering circuit comprises a photo-diode, an operational amplifier, a feedback diode and a latch releasing transistor. In a circuit utilizing a PNP transistor, for example, a cathode of the photo-diode is connected to a non-inverting input terminal... | 03/01/1994 |
| 5136192 | High speed measuring device utilizing logarithmic conversion A measuring device comprises a detector (1) for a quantity x to be measured, which detector is adapted to produce two signals I1 and I2 which relate to x as x=(I1 -I2)/(I1 +I2). The device ... | 08/04/1992 |
| 5136154 | Method and system for photoconductive detector signal correction A corrective factor is applied so as to remove anomalous features from the signal generated by a photoconductive detector, and to thereby render the output signal highly linear with respect to the energy of incident, time-varying radiation. The corrective... | 08/04/1992 |
| 5130529 | Semiconductor optical position sensing device The semiconductor optical position sensing device comprises an optical position sensing element having two electrodes for generating two photoelectric currents changeable according to an optical position between the two electrodes, two current mirror circ... | 07/14/1992 |
| 5115124 | Semiconductor photosensor having unitary construction A semiconductor photo-sensor comprising a photo-sensor area for converting an optical signal to an electrical signal, and a signal processing circuit for processing the electrical signal. The photo-sensor area and the signal processing circuit are formed ... | 05/19/1992 |
| 5071247 | Method for analysis of blood platelet aggregations and apparatus therefor A method for the analysis of blood platelet aggregations consists in that concurrently two parameters are measured the mean intensity and the RMS deviation of intensity of the light flux which had been passed through a blood sample (I2) from said means in... | 12/10/1991 |
| 5025146 | Optical sensor line of amorphous or polycrystalline photoelectric material having a plurality of sensor elements Optical sensor line of amorphous or polycrystalline photo-electric material having a plurality of sensor elements. An optical sensor line of amorphous or polycrystalline photo-electric material having a plurality of sensor elements, whereby it is provided... | 06/18/1991 |
| 5004906 | Logarithmic amplifier, and image read-out apparatus using the same A logarithmic amplifier comprises an amplifier provided with a feedback circuit, a logarithmic conversion device in the feedback circuit, an oscillation preventing circuit which is provided with a capacitor connected in parallel with the logarithmic conve... | 04/02/1991 |
| 4973833 | Image sensor including logarithmic converters A photosensor, or an image sensor made of many such photosensors, including a plurality of photosensor pixels each having a logarithmic converter. The logarithmic converter converts source charges that are produced by a photoreceptor (or a photodiode) and... | 11/27/1990 |
| 4851660 | Photoelectric compressed analog signal strength indicator A compressed analog signal strength indicator that produces a light signal proportional in intensity to the relative alignment of an associated photoelectric transmitter and photoelectric receiver pair is disclosed. A sensor (10) detects a light signal (1... | 07/25/1989 |
| 4841138 | Photosensitive position sensor with logarithmic conversion A position sensor has a photosensitive element including a pn junction formed between first and second electrodes for providing first and second photocurrents varying in dependence on the position of an illuminated spot between the first and second electr... | 06/20/1989 |
| 4808811 | Light integrating circuit for use in a light measuring device which is accurate for both low and high light values A light measuring circuit including a light sensing device for sensing light and producing a signal representative of the light sensed, a compressing circuit for compressing the signal, a capacitor having one terminal connected to a predetermined voltage,... | 02/28/1989 |
| 4694155 | Circuit arrangement to ascertain and indicate that a luminous density limit condition is exceeded A circuit containing a photodiode for determining when there is sufficient illumination for an optical device to operate having provision for compensating signal variations due to temperature-dependent operation of the photodiode by supplying logarithmic ... | 09/15/1987 |
| 4648135 | Photo diode-array dynamic range for optical signal systems A signal handling system of improved dynamic range wherein a logarithmic circuit is interposed between a photo-diode array and other output circuitry.... | 03/03/1987 |
| 4633077 | Photoelectric switch with limit setting means to prevent disablement when the amplifier is saturated There is provided a photoelectric switch in which a beam reflected by an object to be detected is received in a trigonometric manner so that any failure in the distance measurement of the object can be prevented with employment of ordinary amplification c... | 12/30/1986 |
| 4521115 | Pulse coded optical attenuation meter An attenuation measuring system includes a transmitter for generating and transmitting a signal from a first position to a second position, and a receiver adapted to receive the signal at the second position. One of the transmitter and the receiver includ... | 06/04/1985 |
| 4516020 | Light-operated proximity detector with linear output A light-operated proximity detector is described in which reflected light intensity from a surface whose proximity to the detector is to be gauged is translated directly into a signal proportional to the distance of the detector from the surface. A photot... | 05/07/1985 |
