Device to capture alphanumeric characters, uses counters to ensure correct sequencing of characters entered at two different keypads, and comparison of concatenated characters with dictionary to detect errors

摘要

The capture device is integrated into a digital television decoder, and allows simultaneous use of full keyboard and reduced keypad on remote control. As characters are entered (200,201) at each keyboard counters (202) are incremented and used to control concatenation (205) of entered characters. The entered words are compared (208) to a dictionary (128,129) to check for errors.