A color recognition system is used to distinguish between objects of various colors. A plurality of light sources are arranged at a sensing station to reflect light from the object as it passes the sensing station to a plurality of cooperatively mounted light detectors. The signals produced by the plurality of detectors are compared with a reference voltage and the comparison utilized to differentiate between objects of different colors passing the sensing station. In a particular embodiment of ...

Described is an optical character recognition system wherein total data entry is accomplished through a hand held unit. The unit includes an optical scanner, a keyboard and a display which communicate with a portable character recognition unit.

A television receiver includes a recognition system identifying the 19th horizontal scanning line of each field of a transmitted television signal for coupling a vertical interval reference (VIR) signal to suitable signal processing circuitry within the receiver. The recognition system includes a timing circuit defining a pair of predetermined timing intervals in each horizontal scanning line during which the logical characteristics of the composite sync signal are sampled and interrogated. A co...

A character recognition and communication system, wherein a character appearing on a document is converted into a character image signal at a transmission terminal including, for example, a facsimile scanner and transmitted to the prescribed center, after the character represented by the image signal is identified by a communication network including switching equipment; the communication network comprises a plurality of switching units, and the corresponding recognition control units and charac...

A character is scanned in a plurality of parallel scan lines and the starting and ending positions of the character in the respective scan lines are detected. The portions of the character between the starting and ending positions of the respective scan lines are quantized and classified into a code. The starting and ending positions and classification codes are compared with those of standard character patterns and the character is recognized as the standard character with the closest correlati...

A circuit which has two inputs at which respective ones of two time-displaced pulses may be received. The circuit also has an output at which a signal is produced if the pulses arrive in one order but not if they arrive in the opposite order. The circuit may have a second output at which a signal is produced if they arrive in said opposite order but not if they arrive in said one order. If spaced apart movement sensors are used to provide the two input signals, the circuit having two outputs ind...

A speech recognition method for detecting and recognizing one or more keywords in a continuous audio signal is disclosed. Each keyword is represented by a keyword template representing one or more target patterns, and each target pattern comprises statistics of each of at least one spectrum selected from plural short-term spectra generated according to a predetermined system for processing of the incoming audio. The spectra are processed by a frequency equalization and normalizing method to enha...

A magnetic character recognition system is disclosed for reading magnetized characters printed on a document such as a check, which system determines the magnitude and position of each of the peaks of an analog waveform representing each character read by a single gap magnetic read head. Means are provided for normalizing the peak amplitude by dividing the amplitude of each succeeding peak value by the amplitude of the first peak value read and generating a digital value representing the ratio o...

An airborne system for automatically and electronically recognizing and dcting the relative presence of invariant features of a transient submarine signal occurring in the presence of signal-like noise. A plurality of comb filters receive MAD signal information in the amplitude-time domain and filter it to provide amplitude-time-frequency domain information. The primary features (positive and negative slopes) of this latter information are then abstracted, the abstracted information being utiliz...

In order to perform pictorial pattern recognition at an extremely high data rate, a linear array of photodetectors reads information recorded on photograhic film and the data read is transferred sequentially to an array of microprocessors, converted into binary form and stored in the memories. The microprocessors operating in conjunction with transformation logic then perform successive transformations using an analysis technique, known in the art, which utilizes hexagonal surrounds.