| 摘要 |
Data processing apparatus for the recognition or analysis of patterns, which may, for example, be character representations requires that the pattern to be processed be divided into elementary areas arranged in a matrix. The matrix of areas is scanned by a corresponding matrix of detecting elements, such as photocells, and the resultant signals are applied as inputs to a plurality of logic units. Each logic unit is, for example, primarily associated with a specific elementary area of the pattern but connections are also provided to the unit from those detecting elements scanning other pattern areas having a particular positional relationship to the primarily associated one. These other pattern areas are typically those immediately surrounding the primarily associated one. A standard timing waveform is applied to the logic units and is modified according to the states of and positional relationships of the pattern areas whose detectors are connected to the logic unit, so that the output of the logic unit has a time relationship to the standard timing waveform which is dependent on these positions and states. For example, the areas with which a logic unit is associated may produce varying delays to the standard waveform and the various waveforms derived in this way may again be recombined. Typically, the states of the areas may produce a half-cycle delay in the waveform and the positional differences of the various areas may produce appropriate phase delays in the waveform. The resultant output waveform may be that made to indicate such features of the pattern as it is desired to recognize, such as, for example, the direction of a line, or the existence of a curve or junction in the line.
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