an electronic component of an optical character reader that alters the signal from the scanner to receive a processed rendition of the input character that is more appropriate for detailed or more advanced analysis

• 一种光（学字）符阅读装置的电子部件，该部件修正扫描器的输出信号，以得到一种经过处理的、更适合作进一步分析的输入字符的再现