摘要:
A communication apparatus includes a first detector for detecting a calling signal from a line, a tone generator for generating quasi-calling tone and sending it out to the line, a second detector for detecting a signal indicating the data communication from a calling station, and a control unit for starting the data communication in response to the detection by the second detector. The second detector detects the signal while the tone generator sends out the quasi-calling tone when the calling signal is received.
摘要:
A communication apparatus includes a first detector for detecting a calling signal from a line, a tone generator for generating quasi-calling tone and sending it out to the line, a second detector for detecting a signal indicating the data communication from a calling station, and a control unit for starting the data communication in response to the detection by the second detector. The second detector detects the signal while the tone generator sends out the quasi-calling tone when the calling signal is received.
摘要:
A data communication apparatus includes a data communication section for preforming data communication according to full duplex communication, a testing section for performing a communication test prior to the data communication, and a transmission controller for determining whether full duplex communication can be performed during a period of the communication test performed by the testing section. The testing section includes a backward signal generator, a backward signal detector, and a control signal analyzer. The backward signal generator and the backward signal detector may be replaced with an echo canceller.
摘要:
There is disclosed a control circuit for switching between a facsimile unit and an automatic answering telephone unit. A current detecting circuit with satisfactory linearity between the mutually insulated input and output sides is used for detecting a DC current on a communication line, indicating a communication state of the telephone unit and also for detecting an AC signal, representing a speech communication signal and used for recording an incoming message in the automatic answering telephone unit. This structure allows to insulate the recording circuit and the facsimile circuit from the communication line without a transformer, thereby reducing cost and dimension of the apparatus.
摘要:
A communication unit connectable in parallel with other communication equipment to a two-wire telephone line communicates through the telephone line and a detector detects a voltage across the two-wire telephone line. A command unit commands communication by the communication unit and a controller controls the communication by the communication unit according to the detection by the detector and the command by the command unit.
摘要:
An image communication apparatus which is capable of accommodating an extention line terminal comprises a communication unit for receiving an image signal from a line and sending the image signal to the extention line terminal, a memory unit for storing the image signal received by the communication unit from the line, a recorder for recording the image signal received by the communication unit from the line and connection unit for selectively connecting the extention line, the communication unit and the line. The communication unit sends the image signal stored in the memory unit to the extention line terminal through the connection unit.
摘要:
A printing apparatus capable of printing in an appropriate print mode, for a short print period, with maintaining excellent image quality, and a facsimile apparatus or image processing apparatus using the printing apparatus. The type of the image data is examined, in accordance with the source of input image data, and main controller 1 instructs print controller 8 to perform printing in multipath print mode or in normal print mode, in accordance with the image type. The print controller 8 controls printhead 9 in accordance with the instruction. For example, a high-precision image or halftone image is printed in the multipath print mode, while a low-density image or binary image is printed in the normal print mode.
摘要:
In a single line communication apparatus for both telephone and data (e.g., facsimile), the communication line is switched from a telephone to a data communication unit when an incoming data call is received in response to an indication for data communication from the telephone. The communication line is monitored to detect the occurrence of a non-aural terminal calling tone (CNG) within a predetermined time period. Upon detection of the CNG tone within the predetermined time period, a non-aural called party discrimination signal (CED) is transmitted to indicate the start of a data communication.
摘要:
A communication apparatus includes a registration unit for registering setting data specifying a type of email message to be read, a synthetic-speech output unit for outputting resulting speech information, and a determining unit for determining which email message to read based on the setting data. If the user stops speech output, the user can register setting data to reject reading similar email messages and reject distribution of similar email messages by simple operations. If the user does not stop speech output, the user can register setting data to read similar email messages and to cancel rejection to distribute similar email messages by simple operations.
摘要:
An ink printer function and other facsimile functions are controlled by one CPU. Specifically, the CPU performs a recording process and other FAX processes in time division through a task. Further, an ink remaining amount check function of an ink jet printer is performed with priority over other processes by a timer interrupt operation.