| 摘要 |
An electronic system for processing graphic teletype coded signals or graphic facsimile signals in different modes of frequency modulation comprises two filter channels passing different frequency modulated or keyed bands, two filter channels respectively passing signals from the two bands to a pulse shaper which produces a pulsed signal corresponding to the outputs of the filter channels, and channels respectively coupling the output of one filter channel and of the shaper to a facsimile recorder.
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