Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 6885147 | Organic light emitting diode devices with improved anode stability The present invention relates to OLED devices having anodes with improved stability and longer lifetime. In particular, the present invention relates to OLEDs comprising an anode having improved stability and longer lifetime wherein the anode comprises a semi-transp... | 04/26/2005 |
| 6858989 | Method and system for stabilizing thin film transistors in AMOLED displays An active matrix OLED display includes current driving TFT transistors to provide current to corresponding OLEDs. The control signals to each TFT gate include a data signal that is proportional to the desired luminance output for the OLED and a reverse data signal t... | 02/22/2005 |
| D500448 | Perfume bottle | 01/04/2005 |
| D498166 | Elastomeric band | 11/09/2004 |
| 6809710 | Gray scale pixel driver for electronic display and method of operation therefor A circuit is disclosed for driving an OLED in a graphics display. The circuit employs a current source operating in a switched mode. The output of the current source is connected to a terminal of the OLED. The current source is responsive to a combination of a selec... | 10/26/2004 |
| D496286 | Combined perfume bottle and cap | 09/21/2004 |
| D493380 | Elastomeric band | 07/27/2004 |
| 6691422 | Photographic cropping method and device A novel photographic cropping method and device, which may eliminate the need to cut or mark photos being cropped, is disclosed.... | 02/17/2004 |
| 5822343 | Operating and control system for lasers useful in bar code scanners In order to set the output optical power of a laser diode precisely and under digital control without expensive digital to analog conversion devices, a digital controller provides a sequence of pulses. A capacitor is charged by these pulses to produce a c... | 10/13/1998 |
| 5692203 | Power up/power down for electronic hardware which conserves electric power A system especially suited for powering up and down electronic equipment operated to a power conservation mode, which conserves more power than other power conservation efforts. The system is operated by hitting any key of a keyboard which provides data e... | 11/25/1997 |
| 5666045 | Laser drive and control systems useful for laser diode protection A laser drive and control system which provides protection for a laser diode by preventing excess current from a power source, that normally supplies power to the laser diode, from destroying the laser diode when the voltage supplied by the power source t... | 09/09/1997 |
| 5665956 | Bar code reading and data collection unit with ultrasonic wireless data transmission A bar code scanner includes a separate transmitter and receiver, each being able to ultrasonically transmit and receive data, respectively. The receiver transmits an acknowledgement signal when a protocol is received, and sends the acknowledgement signal ... | 09/09/1997 |
| 5661435 | Low noise wide band amplifier An amplifier circuit provides wide bandwidth low noise performance by minimizing the effect of a pole created by the feedback resistor and the capacitance of the input device, such as a photodiode. This is accomplished by shifting the dominant pole to hig... | 08/26/1997 |
| 5654534 | Hand held or hand mounted bar code scanning device having a display which pivots between an open and closed position A bar code hand held scanning terminal which combines a data input device, a display and a scanning engine in a single portable unit. This unit is compact and may be employed in, for example, a scanning terminal which is attached to the back of a hand of ... | 08/05/1997 |
| 5633641 | Analog to digital converter with continuous conversion cycles and large input signal range A successive approximation A/D having dual comparators for allowing a larger range of analog input signals to be converted into digital form. One comparator is an N-channel device, and the other comparator is a P-channel device. The A/D switches to either... | 05/27/1997 |
| 5629510 | Bar code scanning and reading apparatus with an oscillating scanning engine An improved miniature scanning module for scanning and reading data fields having images or symbols such as bar codes, adapted to be included in a scanning application such as a portable transaction terminal. The scan engine of the module has an oscillato... | 05/13/1997 |
| 5612529 | System for bar code reading and scanning with automatic gain control A system for bar code reading and scanning is provided having automatic gain control for accurate reading of bar codes over a range of distance. An amplifier within the system provides a plurality of selectable amplification gain levels for increasing the... | 03/18/1997 |
| 5608399 | Resolution enhancer circuit for analog to digital converters A resolution enhancer circuit provides an increased resolution capability for an A/D converter. The resolution enhancer circuit receives as input an analog input signal having a range greater than the effective range of the A/D, and prescales the input si... | 03/04/1997 |
| 5608201 | Method and apparatus for detecting edges in a signal obtained from a bar code scanned in the Fresnel zone A system for use in a bar code processing system using a combination of a first derivative signal and a second derivative signal to determine the bar edge. The predominant signal in determining the edge is the second derivative signal. A zero-cross of the... | 03/04/1997 |
| 5598070 | Optical scanner control systems and circuits A control system for a scanning motor that may operate at constant power, which has a control circuit including an H-Bridge connected across the drive coil of the motor. The control circuit operates under microprocessor control for digitally generating se... | 01/28/1997 |
| 5576531 | Hand held bar code scanning device having a manually operated optical trigger switch A hand held bar code scanning device includes scanning circuitry to conduct bar code scanning and a manually actuated optical trigger switch, connected to the scanning circuitry, to initiate bar code scanning.... | 11/19/1996 |
| 5561427 | Analog to digital converter with continuous conversion cycles and large input signal range A successive approximation A/D having dual comparators for allowing a larger range of analog input signals to be converted into digital form. One comparator is an N-channel device, and the other comparator is a P-channel device. The A/D switches to either... | 10/01/1996 |
| 5552593 | Template or reticule for quality control of a hexagonal code having an acquisition target and an alignment target A print quality, see-through template determines if a hexagonal coded symbol area imprinted on a package falls within allowable limits. The template includes boundaries corresponding to a minimum allowable coded symbol areas and boundaries corresponding t... | 09/03/1996 |
| 5541397 | Hand held bar code scanning device having a manually operated optical trigger switch A hand held bar code scanning device includes scanning circuitry to conduct bar code scanning and a manually actuated optical trigger switch, connected to the scanning circuitry, to initiate bar code scanning.... | 07/30/1996 |
| 5512740 | Bar code scanner with field replaceable window A hand-held bar code scanner has a field-replaceable optical element (250) such as a window using a rubber boot (110) to hold the window (250) proximate to the scanner housing (101) in front of the housing. The optical element is most typically a window b... | 04/30/1996 |
| 5504456 | Low noise wide band amplifier An amplifier circuit provides wide bandwidth low noise performance by minimizing the effect of a pole created by the feedback resistor and the capacitance of the input device, such as a photodiode. This is accomplished by shifting the dominant pole to hig... | 04/02/1996 |
| 5448050 | Integrated bar code reading and location mouse A bar code scanning engine (34) is disposed in a housing (12) with a device (24, 26) which tracks the movement of the housing over a surface (22) displaying symbols such as bar codes and provides an integrated bar code reading and locating assembly, commo... | 09/05/1995 |
| 5420410 | Bar code signal digitizer adapted for signals from inverse bar codes In order to prevent a digitizer which receives signals from a bar code reader which scans an inverse code (white bars on black background as opposed to a direct or normal code with black bars on white background) from improperly digitizing a white space a... | 05/30/1995 |
