CHARGE-COUPLED-DEVICE BASE DATA-IN-VOICE MODEM

摘要

A data-in-voice modem is disclosed using charge coupled devices (T1-T3). Unique features include: baseband-to-IF upconversion to enable CCD-based demod/processing; all analog (no analog-to-digital A/D required); option for post-CCD A/D; additional on-chip functions; stand-alone, CCD-based high-rate modem over telephone lines; CCD-based cable-TV/multimedia processing, via baseband-to-IF upconversion, followed by IF-sampled CCD processing.