Abstract: There is disclosed a color facsimile apparatus capable of communication of a color image, utilizing plural colorants in the printing unit, wherein, when one of the colorants runs out in the printing unit, such colorant is replaced by another colorant and the image printout is conducted with a varied resolution, for example with a reduced image size, in order that the operator can immediately recognize the absence of the colorant.

Abstract: A facsimile and a facsimile system are connected to an inside bus of an ISDN (integrated services digital network). When trouble, such as no toner, jam, no paper or the like, has occurred in a recording unit of a first facsimile apparatus on the inside bus, the first facsimile apparatus issues an announcement of interruption onto the bus. A second facsimile apparatus on the above-described bus monitors a signal on the bus. When the second facsimile has detected the announcement of interruption, it performs substituting reception in place of the first facsimile apparatus. It is thereby possible to maintain the continuation of communication even if trouble has occurred during reception and recording.

Abstract: A plurality of waveforms are time-divisionally obtained from a waveform generator in one sampling period under the control of a controller. The sampling period is equally divided into a plurality of module periods. Each module period is also divided to correspond to the number of waves which are obtained time-divisionally. The waveform generator includes a selector which uses waveform data produced in a preceding module in the sampling period as that for waveform generation in the following module.

Abstract: A data communication apparatus includes a reader, a mode change unit, a GIII facsimile controller connected to a telephone line, a GIV facsimile controller connected to a data line, and a printer. The mode change unit includes a mode change controller, a dummy reader, a dummy printer, resolution converters, and switches. The mode change controller connects the GIII or GIV facsimile controller to the reader and the printer. The facsimile controller which is not connected to the reader and the printer is connected to the dummy reader and the dummy printer. The resolution converters convert resolutions of the data so as to match a source apparatus with a destination apparatus.

Abstract: A facsimile apparatus has a CCU for receiving image data, a decoder for decoding received data, an image memory for storing the decoded data, a CPU for controlling send/receive operation, and a printer for printing received data. High-speed data communication can be performed using a small-capacity memory and a digital transmission line and without data loss.

Abstract: An encoding apparatus of the invention includes a multiplexer for converting serial input video data into 8-bit parallel video data, a counter for counting a run length of the serial input video data so as to generate its count as 6-bit parallel data, a detection circuit for detecting a variability point of the input video data, a mode control circuit for selecting the parallel output from the multiplexer or the counter in accordance with the content of the input video data, and a shift register for storing the parallel output selected by the mode control circuit. Meanwhile, a decoding apparatus of the invention includes a mode determination circuit for determining the content of the code data representing the video data or run length data, and counters for counting code data representing the video data or the run length data, respectively.