| 摘要 |
A DIGITAL DATA MODULATOR INCLUDES A SOURCE OF A PLURALITY OF DIGITAL DATA SIGNALS HAVING A COMMON DATA BIT PERIOD. A PLURALITY OF ENCODERS EACH ENCODE A CORRESPONDING ONE OF THE PLURALITY OF DIGITAL DATA SIGNALS USING A VARIABLE PULSE WIDTH CODE HAVING EDGES OCCURRING IN RESPECTIVE NONOVERLAPPING INTERVALS WITHIN THE DATA BIT PERIOD. A PLURALITY OF PULSE SIGNAL GENERATORS EACH GENERATE RESPECTIVE PULSES REPRESENTING THE EDGES OF THE CORRESPONDING ONE OF THE ENCODED PLURALITY OF DIGITAL DATA SIGNALS. A CARRIER SIGNAL GENERATOR (30, 40) GENERATES A CARRIER SIGNAL HAVING CARRIER PULSES CORRESPONDING TO THE RESPECTIVE PULSES. A DIGITAL DATA DEMODULATOR INCLUDES A SOURCE OF A MODULATED SIGNAL INCLUDING SUCCESSIVE BIT PERIODS, EACH BIT PERIOD HAVING A PLURALITY OF NON-OVERLAPPING INTERVALS RESPECTIVELY ASSOCIATED WITH CORRESPONDING INTERVALS IN SUCCESSIVE BIT PERIODS, EACH INTERVAL CONTAINING A CARRIER PULSE, SPACED RELATIVE TO CARRIER PULSES IN OTHER ASSOCIATED INTERVALS, REPRESENTING A CORRESPONDING VARIABLE PULSE WIDTH ENCODED DIGITAL DATA SIGNAL. A DETECTOR (140) DEMODULATES THE MODULATED SIGNAL TO GENERATE PULSES CORRESPONDING TO RECEIVED CARRIER PULSES. A PLURALITY OF DECODERS (150(1), 150(2), 150(3)), EACH DECODE PULSES RECEIVED IN A RESPECTIVE ONE.(FIG 11)
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