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| Number | Title | Issue Date |
| 5052026 | Bit synchronizer for short duration burst communications In order to rapidly acquire and track a clock signal embedded in a reduced length synchronization preamble, a bit synchronizer contains a digital counter, which counts clock signals from a local clock generator having a frequency that is a multiple of the... | 09/24/1991 |
| 5052027 | Programmable noise bandwidth reduction by means of digital averaging Predetection noise bandwidth reduction is effected by a pre-averager capable of digitally averaging the samples of an input data signal over a single symbol, the averaging interval being defined by the input sampling rate divided by the output sampling ra... | 09/24/1991 |
| 5052028 | Method for synchronizing the phase of clock signals of two clock generators in communications networks Method for synchronizing the phase of clock signals of two clock generators in communications networks. Using the present method, the phase relations of clock signals that are derived from oscillator clock signals in two clock generators are synchronized ... | 09/24/1991 |
| 5052029 | Self-correcting synchronization signal method and apparatus A self-correcting synchronization signal for a communication interconnect which connects multiple units, the synchronization method including the steps of: waiting for a predetermined period of time until the next synchronization signal is due (nominal cy... | 09/24/1991 |
| 5052030 | Method for synchronizing a clock, generated with the assistance of a counter, to a reference clock In order to replace a reference clock sR, as needed, and without phase shift, with another clock f, the latter clock must be synchronized to the reference clock in frequency and in phase. Since the reference clock can fail or can be disturbed, ... | 09/24/1991 |
| 5052031 | Phase locked loop including non-integer multiple frequency reference signal A digital phase locked loop is employed to realize an output clock signal from a reference signal having a frequency which is not an integer multiple of the output clock signal frequency. This is realized by employing a programmable divider for dividing t... | 09/24/1991 |
| 5052032 | Clock formation circuit A clock formation circuit to form from a digital data signal a formation clock signal corresponding to a data clock controlling an inversion timing of the digital data signal having a circuitry which provides an information signal of the phase difference ... | 09/24/1991 |
| 5052033 | Reflection type mask A reflection type mask usable to print a pattern upon a semiconductor wafer by use of soft X-rays or otherwise is disclosed. A reflective surface is formed by a multilayered film which is formed on a substrate by layering different materials having differ... | 09/24/1991 |
| 5052034 | X-ray generator An X-ray generator has an anode formed by an electrically conductive fluid having a flat surface on which focused electrons are incident, so that X-rays are generated at a solid angle with respect to the surface, with being the critic... | 09/24/1991 |
| 5052035 | Image location marking devices for radiographs, method of making and methods of use A device for producing plural lines on a film bearing a radiographic image of a portion of the body of a living being to facilitate the location of a part of the being's body within that image. The device comprises a flexible substrate formed of a porous,... | 09/24/1991 |
| 5052036 | X-ray stand with laterally inclined rotation axis An X-ray stand includes a fixture attached to the ceiling surface floor surface or side wall surface of a hospital room. A support is connected to the fixture with a rotary bearing connected to a circular track. An arcuate carriage sliding in the track ha... | 09/24/1991 |
| 5052037 | Video telephone employing pulse width modulation for data transmission A modem implementation a high data transmission rate is implemented by means of pulse width modulation. The timing magnitude for each baud is weighted by the binary value of the data input. Minimal components are employed and the entire circuit is compris... | 09/24/1991 |
| 5052038 | Apparatus and method for obtaining information in a wide-area telephone system with digital data transmission between a local exchange and an information storage site A telephone system wherein any one of a large number of telephones is connectible to a local directory-assistance request processor. The name of a subscriber whose telephone number is sought is entered through a connected telephone by spelling out the sub... | 09/24/1991 |
| 5052039 | Line interface circuit Alternating current signals are differentially coupled between a two wire communications line and a telecommunications facility by a line interface circuit. The line interface circuit differentially drives signals destined for the two wire communications ... | 09/24/1991 |
| 5052040 | Multiple user stored data cryptographic labeling system and method There is disclosed a system and method of extending the labels on an encryption technique so that different users can utilize the same files under different rights established by both the user and the system administrator. This system and method take adva... | 09/24/1991 |
| 5052041 | Silencer A silencer for refrigerators includes a microphone for detecting noise produced by a compressor disposed in a machine compartment and converting the noise to an electrical signal, a signal converter converting the electrical signal generated by the microp... | 09/24/1991 |
| 5052042 | Method and apparatus for using microfilm for data input into a computer The invention relates to a system that uses human readable microfilm to store information and retrieve that information for later use in a computer. The microfilm is put into a Computer Input Microfilm (CIM) Reader that scans the film and converts the cha... | 09/24/1991 |
| 5052043 | Neural network with back propagation controlled through an output confidence measure Apparatus, and an accompanying method, for a neural network, particularly one suited for use in optical character recognition (OCR) systems, which through controlling back propagation and adjustment of neural weight and bias values through an output confi... | 09/24/1991 |
| 5052044 | Correlated masking process for deskewing, filtering and recognition of vertically segmented characters Vertically segmented characters are pre-processed for optical character recognition so as to remove skew and noise by convolution with a mask consisting of parallel vertical lines with a one-pixel spatial frequency. The horizontal alignment of the mask wi... | 09/24/1991 |
| 5052045 | Confirmed boundary pattern matching A method of aligning two images of the same scene by matching features in a first image to features in a second image is disclosed. The method comprises identifying edges of objects in the first image using two different processes. The edges identified us... | 09/24/1991 |
| 5052046 | Image processing method and apparatus therefor An image processing apparatus that processes image data consecutively in the column and row directions has an image memory, a reading unit, a temporary memory and an operative unit. The image memory stores image data consecutively in column and row direct... | 09/24/1991 |
| 5052047 | Modulator-remodulator with common local oscilator A channel converter system includes a local oscillator for converting an input RF television channel frequency signal to an intermediate frequency and for remodulating the intermediate frequency signal to produce a channel output signal at the same freque... | 09/24/1991 |
| 5052048 | Crime deterrent system The invention relates to a crime deterrent system in which passive pursuit of a randomly moving subject involved in a crime is monitored by a central control station having input as to the exact location and direction of movement of the subject from at le... | 09/24/1991 |
| 5052049 | Paging receiver with continuously tunable antenna A paging receiver (10) is disclosed which is compatible with transmissions from analog or digital paging transmitters. The paging receiver has a command structure which permits it to be dynamically programmable to change its functionality including progra... | 09/24/1991 |
| 5052050 | Direct conversion FM receiver A direct conversion receiver for demodulating an FM signal converted frequency down converts the signal to quadrature related baseband signals (I,Q). These signals are applied by way of respective d.c. blocking capacitors (16, 18) and differentiating circ... | 09/24/1991 |
| 5052051 | Heterodyne receiver for coherent optical communication After mixing the signal light and the local oscillation light with a mixing circuit, two intersecting polarization components are divided by a polarization splitter and respective components are subjected to heterodyne detection by optical receivers. Ther... | 09/24/1991 |
