Abstract: The invention concerns a system and process for sending secure faxes that include a sending fax machine (20); a receiving fax machine (23); and a registered fax server (21). One of the fax machines is provided with a security module that assures document integrity, produces and verifies digital signatures and combats replays.

Abstract: When a protocol signal is transmitted between a facsimile machine which operates under new ITU-T Recommendation and another facsimile machine which operates under old ITU-T Recommendation, a certain functional bit to specify a particular function of the new facsimile machine may not be understood by the old facsimile machine if such a functional bit is previously included in a protocol signal for non-standard procedure but now included in a protocol signal for standard procedure. If the old facsimile machine does not interpret the functional bit, a desired communication cannot be conducted between the two facsimile machines. To avoid such a case, a prescribed functional bit is included in both a protocol signal for standard procedure and a protocol signal for non-standard procedure. The functional bit included in the protocol signal for non-standard procedure will be understood by the old facsimile machine.

Abstract: A data recording and/or reproducing device for recording and/or reproducing data on or from a recording medium includes information concerning the recording method used for recording data on a recording medium, that is the encoding/decoding instruction data is recorded on the recording medium along with the data. Using the encoding/decoding instruction on the recording medium, specifically the decoding instruction, the data on the recording medium is restored by a DSP. The data recording and/or reproducing device enables data processed with an inconvenient system or an older model system to be restored easily and inexpensively.

Abstract: In a first facsimile device, if a calling message does not include a called party subaddress and a subaddress of the device is stored, received image data is temporarily retained and the retained image data is either recorded or erased according to a user's instruction. In a second facsimile device, the image data are not received in the above case. a waste of recording paper due to an unnecessary recording of image data is avoided in both the first and second facsimile devices.

Abstract: A local router interface couples a conventional facsimile device to the public switched telephone network (PSTN) to communicate with a remotely located facsimile store and forward facility (F-SAFF) to perform a host of improved facsimile service methods, including a never no answer or busy send (NNABS) method, a never no answer receive (NNAR) method, a private facsimile method, a will call facsimile method, a pager facsimile method, a facsimile mail method, a facsimile information retrieve method, a facsimile information send method, a facsimile cover method, a facsimile speed cover method, a facsimile broadcast method, a facsimile flexible broadcast method, a facsimile access restriction method, a facsimile conversion method, an urgent facsimile method, and a facsimile addition method. Innocuous call progress monitoring with fast busy detection, post-fax line holding, F-SAFF-to-remote and remote-to-F-SAFF bridging are provided.

Abstract: A data communicating device is provided having an actuating means that is driven when data is to be transmitted/received. Prior to transmitting/receiving data, the actuating means is driven and a transmission condition is set in accordance with a determined noise level of the actuating means. The data is then transmitted/received in accordance with the thus set transmission condition.

Abstract: A multifunction device having at least a facsimile function, a scanner and an image processing circuit is provided. The image processing circuit includes a circuit for applying a TRC correction to gray values derived at the scanner, before a halftoning circuit quantizes the gray values for printing. The TRC correction circuit includes at least two stored TRC correction functions that can be applied by the TRC correction signals. In making a call to transmit a document via the facsimile function to a called station, the exchange of signals required for establishing the facsimile connection includes identification of a preferred TRC correction function preparatory to printing at the called station printer. In accordance with the identification of a preferred TRC correction function, the image processing circuit operates on image signals derived at the scanner, to provide TRC correction of the image signals preparatory to printing at the destination printer.

Abstract: A communication apparatus detects an incoming-call during communication and rejects the incoming-call. If the apparatus detects the incoming-call during communication and rejects the incoming-call, delays calling for next transmission for a predetermined period after the current communication. If the apparatus detects the incoming-call within the predetermined period, it accepts the incoming-call. Thus, the apparatus can ensure an opportunity to accept an incoming-call without prolonging the entire communication time.

Abstract: A facsimile apparatus determines whether a frame to be transmitted is an image block or an error retransmission frame, and transmits a short training sequence or a long training sequence based on the results of the determination. The long training sequence is sent if a TCF signal is transmitted and the short training sequence is sent if the image block is transmitted. If the facsimile apparatus is on the receiving side, a training sequence in accordance with the frame from the transmitting side is received. After a carrier signal is detected, the apparatus then makes a transition to a mode for receiving the TCF signal or image block.

Abstract: A facsimile apparatus includes: a memory unit for storing subscriber number records indicating destination stations for urgency message transmission, and for storing voice and image urgency message records respectively indicating voice and image urgency messages; an operation unit for selecting one of the destination stations whose records are stored, and for selecting one of message transmit modes; a transmission starting unit for starting an urgency message transmit procedure when one of the destination stations is selected and one of the message transmit modes is selected; and a transmission unit for transmitting an urgency message to the selected destination station through a transmission line when the urgency message transmit procedure is started, the urgency message being one or both of the voice and image urgency messages in accordance with the selected message transmit mode.

Abstract: A facsimile apparatus which can output a plurality of copies of received information includes a reception unit, a printer, and a controller. When a plurality of copies of received information are to be output, the controller adds information, indicating that the plurality of copies of received information are output, to each copy of recorded information.

Abstract: A source facsimile apparatus includes a modem having a variable transmission rate and is connected by a radio link to a destination facsimile apparatus which is located in a mobile subscriber station within a radio network. Facsimile data is transmitted at a selected data transmission rate from the source facsimile apparatus to a modem within an interworking function located in the radio network. A buffer memory stores the facsimile data received by the modem of the interworking function. The facsimile data is then transmitted from the buffer memory via the radio link to the destination facsimile apparatus within the mobile station. If the radio link does not allow facsimile data to be sent to the mobile station at about the same rate it is being received by the modem of the interworking function, the latter is changed to bring the two into closer conformity.

Abstract: An image communication apparatus, for recording an image using a recording head for ejecting an ink from an ejection port by utilizing energy generated by an ejection energy generation element, includes a communication section for communication a procedure signal associated with a communication and image data, a driving section for driving the recording head in accordance with the image data received by the communication section, a preservation section for performing preservation processing of the recording head, and a control section for discriminating a procedure signal transmitted after the image data, and controlling an operation of the preservation section on the basis of the discrimination result. When the control section discriminates that a specific procedure signal for successively performing reception is transmitted, it causes the preservation section to execute the preservation processing.

Abstract: Remote data entry is performed in such a manner that a plurality of entry items and a plurality of data items are caused to collectively enter within one communication and the check sum is calculated simultaneously with the data entry so that abnormality of the data is easily detected even if the contents of the entry data are changed due to the abnormality occurring in a facsimile apparatus. Data is collectively stored in a receiving buffer and a great quantity of data is caused to remote enter if the capacity of the buffer permits. After all remote data entries have been completed, the check sums of all entry memory regions are performed so that the memory capacity of the program code of the check sum is saved.

Abstract: A facsimile apparatus which has an auto-dialing function automatically begins a procedure for image communication after making a call to a destination. If the apparatus does not receive a response signal from the destination during predetermined period from the start of the procedure, the procedure is terminated. If a pause period is set into the auto-dialing operation, the apparatus automatically changes the predetermined period according to the set pause period, so that the apparatus with certainty receives the response signal from the destination by setting a long pause period into the auto-dialing operation.

Abstract: A system and method has one or more store and forward facilities, (SAFF) each associated with a plurality of subscriber facsimile machines. The SAFF include a computer for controlling operations and mass data storage equipment. A subscriber to the system delivers an outgoing facsimile message to the SAFF with which it is associated, which records the fax message, together with data as to originating facsimile machine and destination facsimile machine. The SAFF then delivers the facsimile message to the intended receiver facsimile machine, either directly or through another SAFF. If unsuccessful on an initial attempt, the SAFF periodically retries to send the facsimile message. The system also provides spooling of all facsimile messages for an intended receiver machine, which are all spooled upon connection with the receiver machine. Subscriber mailboxes are provided as part of the mass storage, which can be accessed by a subscriber to have his messages delivered to any facsimile machine he designates.

Abstract: A method for transferring data between electronic filing systems via a communications network and using facsimile communications protocol is disclosed. The method includes the step of adding codes corresponding to non-standardized terminal capability information into a session start command (CSS) of a facsimile communication protocol and sending the CSS to a receiving end electronic filing system. The non-standardized terminal capability information includes a code indicating that the sending system is an electronic filing system and the memory capacity of the sending system, etc.The method further includes the step of adding header information at the top of the communication data to be transmitted. The header information includes an identifier identifying whether or not the data to be transmitted corresponds to an image; if it corresponds to an image, the header information further includes the size and line density of the image, the compression method for the image, etc.

Abstract: Communication system and method including a calling apparatus and a called apparatus. The system comprises handshake means for exchanging negotiation information including error correction ECM capabilities data, contained in a plurality of command frames between the calling apparatus and the called apparatus. The system further includes means for initiating an error correction operation, a transmitter for transmitting and receiving between the calling and the called apparatus a data set having associated data frame identification information, and verification means for verifying receipt of the data set. A method corresponding to the system also is described.

Abstract: In a communication control system between a device for outputting image data, and a recording apparatus for recording an image on a recording medium in units of predetermined unit recording widths in accordance with the image data output from the device, the device requests, to the recording apparatus, information associated with an image data amount necessary for recording an image in the predetermined unit recording width, and the recording apparatus sends back the information associated with the image data amount to the device in response to the request from the device. The information associated with the image data amount is variable.

Abstract: A data storage device is designed so that voice digital data and image digital data are stored into a voice/image memory thereof. The type of digital data to be stored into the voice/image memory is indicated by manipulating a record key or a play key, and a set key. Through this operation, only digital data of the type is indicated is stored into the voice/image memory.

Abstract: In a communication control system between a device for outputting image data, and a recording apparatus for recording an image on a recording medium in units of predetermined unit recording widths in accordance with the image data output from the device, the device requests, to the recording apparatus, information associated with an image data amount necessary for recording an image in the predetermined unit recording width, and the recording apparatus sends back the information associated with the image data amount to the device in response to the request from the device. The information associated with the image data amount is variable.

Abstract: A video interface system can cope with a plurality of printers having different clock signal frequencies with reduced timing skew between image data and a clock signal. The video interface system interfaces an image data supplying apparatus, such as a host computer, with a printer. The video interface system comprises a reference clock signal sending unit, provided in the image data supplying apparatus, for sending back a reference clock signal supplied by the printer by means of a loop back control. A shift register is provided in the image data supplying apparatus, and sends image data to the printer in synchronization with the reference clock signal supplied by the printer.

Abstract: A facsimile system includes a base station connected to a wire network, and a plurality of extension sets connected to the base station through radio networks. The base station includes an NCU (Network Control Unit) for receiving an image signal received through the wire network, a printer for outputting an image corresponding to the image signal received by the NCU, a control circuit for calling an extension set in response to a call signal received through the wire network, a switching circuit for connecting the wire network to the NCU in response to a response signal transmitted from the called extension set, and a transceiver for receiving the image signal transmitted from the extension set and sending the image signal to the wire network.

Abstract: A facsimile machine is provided which can transmit and receive data over asynchronous digital data networks in accordance with an asynchronous protocol. The facsimile machine can provide and receive negotiation information during a data transmission process.

Abstract: An apparatus for transmission, reception and recording of an image, such as a facsimile apparatus, capable of correcting the unevenness in density or improper density resulting from fluctuation in the performance of the recording head of the receiving unit, with a limited amount of data transfer. At the start of communication, correction data for uneven or improper density of the recording head are sent from the receiving unit to the transmitting unit. The transmitting unit corrects the multi-value image data to be transmitted, based on the received correction data, and sends the corrected image data after conversion into binary state. The receiving unit receives the binary image data and effects image recording. The time and cost for data transmission can be reduced, as the correction is conducted at the transmitting unit and the data transmission can be made in binary data.

Abstract: A facsimile machine including an appendant information adding unit for automatically preparing appendant information such as a cover page information and a call-back-message information and transmitting the information to the reception side together with the original images, whereby the appendant information is printed on a sheet to automatically prepare a cover page and/or a call-back-message page together with the original image sheets at the reception side.

Abstract: A fax gateway (10) improves the efficiency of long-distance fax communications by simultaneously receiving a plurality of low-speed (G3) faxes, bundling them into a single fax for transmission to a common distribution, and transmitting the single fax as a high-speed (G4) fax to the destination. At the destination, the high-speed fax is received, unbundled into its constituent faxes, and the constituent faxes are distributed as low-speed (G3) faxes to a plurality of recipients.

Abstract: A facsimile device transmits image data from a calling station to a facsimile device at a called station over a transmission line. The facsimile device has an image reader for reading image data to be transmitted, and a driver including a motor for actuating the image reader to read the image data. When a TCF signal is transmitted from the calling station to the called station to check the condition of the transmission line, a controller energizes the motor, which results in electrical noise being generated, corrupting the TCF signal. The controller then controls a transmission rate at which the image data is to be transmitted depending on the level of electrical noise in the TCF signal, that is detected at the called station. Since the transmission rate is established depending on the level of electrical noise, communication or decoding errors are reduced during the transmission of the image data.

Abstract: A communication apparatus for performing a communication according to a predetermined communication procedure, includes a memory for storing in advance data indicating a name such as an abbreviation of each distant station to communicate with, and a controller for comparing data indicating a name of a distant station included in a received predetermined communication procedure signal with the data stored in the memory, and changing a communication procedure according to the comparison result.

Abstract: A system for transferring and recording image data. A host device outputs a video signal representative of image data and a request signal effective to request recording of the image data. A recording device is responsive to the request signal to return to the host device a gating signal defining a preceding preparation interval and a succeeding transfer interval and effective to enable the host device to complete preparation of transfer of the image data within the preceding preparation interval and to carry out the transfer of the image data during the succeeding transfer interval from the host device to the recording device so that the recording device records the image data.

Abstract: An automatic dial device transmits a dial signal to a telephone line. A facsimile signal receiver serves to receive a response facsimile signal from the telephone line. An image signal is transmitted from an image data store unit to the telephone line in cases where the facsimile signal receiver receives a response facsimile signal during a predetermined period after the automatic dial device transmits a dial signal. The telephone line is opened in cases where a busy signal is detected by a busy signal detector during the predetermined period after the automatic dial device transmits a dial signal. The telephone line is opened in cases where the busy signal detector continues to not detect a busy signal during the predetermined period after the automatic dial device transmits a dial signal. A communication failure is indicated in cases where the busy signal detector continues to not detect a busy signal during the predetermined period after the automatic dial device transmits a dial signal.

Abstract: An image forming system for forming an image by supplying a sheet of paper from a sheet supply section to an image forming section through a transfer path. In a first print mode, the sheet of paper is placed on standby in a sync transfer section provided on the transfer path, and image data transferred thereafter is printed in the image forming section, and in a second print mode, the sheet of paper is transferred to the sync transfer section without stopping the sheet of paper at the sync transfer section, transfer of image data is requested, and the image data transferred is printed in the image forming section.

Abstract: There is disclosed a facsimile apparatus which transmits a predetermined signal, such as CNG signal, during pause periods succeeding the transmission of telephone number signals. This operation prevents the delay of CNG signal detection in case the receiving side has an automatic telephone/facsimile switching function, and also prevents the facsimile communication being erroneously cut off in case the pause period of the calling side eventually overlaps with the CNG detection period of the receiving side.

Abstract: This disclosure relates to a facsimile apparatus connected to an ISDN and having a confirmation function by which an addressor is capable of confirming whether data transmitted by the addressor have reached the addressee with certainty. The apparatus on the transmitting side adds transmission management information to the transmission data and sends both the data and the additional information to an apparatus on the receiving side. Based on the received transmission management information, the apparatus on the receiving side responds by sending information indicating that it has assuredly received the data back to the apparatus on the transmitting side. Thus, transmission of the data is performed with assurance by exchange of management information between the apparatus on the transmitting and receiving sides. Also disclosed is a facsimile apparatus having a function in which a password on the receiving side is provided so that a specific individual can confirm certain receipt of data.

Abstract: A facsimile system having a transmitting function in facsimile communication which comprises a first means for inputting external document data in the form of electrical signals as a printer output file, a storage means for storing the external document data inputted by the first means and a second means for transmitting the external document data stored in the storage means to a predetermined destination by way of a communication line in accordance with a protocol of facsimile transmission.

Abstract: An automatically created form includes a list of items in relation to which an operation can be performed. A processor creates the form in response to facsimile transmission of another form that includes a field requesting automatic creation of a form. The data defining the image of the requesting form also includes information indicating an image destination, and the automatically created form is transmitted to the indicated destination. The requesting form can be a previously created starter form that is automatically transmitted back to a fax machine in response to an image of a blank sheet or a sheet with simple marks received from the fax machine. The starter form can include a security code as well as fields with check boxes for indicating a set of items to be listed, such as recipients of facsimile transmissions or documents or forms that could be transmitted.

Abstract: A facsimile apparatus capable of processing the image information receiving from a particular transmitter in a mode different from the usual mode of processing image information receiving to distinguish the communication from the particular transmitter from those transmitted by others immediately. For example, the image information receiving from the particular transmitter is recorded on different kind of paper from usual image information recording paper, or recorded in different color from usual image information recording color, or the paper recorded the image information from particular transmitter is discharged onto different tray from the tray onto which usual image information recording paper is discharged.

Abstract: A transmission arrangement is disclosed which facilitates compression of modem modulated facsimile signals for transmission on digital facilities. The presence of a facsimile call is detected and facsimile control messages are obtained by demodulating and interpreting the facsimile call control protocol. A controller is responsive to the obtained control messages for controlling a voiceband encoder to encode the control portion of the facsimile call and for controlling a so-called facsimile page demodulator to demodulate any facsimile page portions of the facsimile call to obtain a baseband digital bit stream. The presence of prescribed tone signals, i.e., echo protection tone (EPT) signals, is detected in the facsimile call. EPT control messages representative of the EPT signals are generated. The encoded control portion of the facsimile call and the baseband digital bit stream representative of the demodulated, i.e.

Abstract: A multiple station facsimile relay system for transmitting a message from a transmitting facsimile to a receiving facsimile through relay transmission and for sending an acknowledgment report from a final relay station to the transmitting facsimile through relay transmission.

Abstract: A data transmission apparatus includes a facsimile section for performing data transmission, at least one multifunction telephone set terminal for performing speech communication, a switching circuit for switching the facsimile section and the multifunction telephone set terminal, and a microcomputer for detecting whether transmission data is set in the facsimile section. The switching circuit switches a transmission line from the multifunction telephone set terminal to the facsimile section when the microcomputer detects that the transmission data is stored in the facsimile section while the multifunction telephone set terminal is engaged with the transmission line.

Abstract: A method of controlling a store-and-forward switching system comprising a store-and-forward switching central unit and a plurality of terminal units comprising the steps of detecting a call from a terminal unit through a communication control unit for controlling communication between the central unit and the terminal units, inputting a request for a normal-priotity multi-destination delivery communication service from a terminal unit, reading a service attribute table from an external storage unit and loading it into a memory, referring to the service attribute table on the memory to determine whether or not the normal-priotity multi-destination delivery communication service is granted to the terminal unit, determining that the normal-priotity multi-destination delivery communication service is granted to the terminal unit on the basis of a value of predetermined data in the service attribute table, performing pre-processing of protocol communication with the terminal unit through a communication control un

Abstract: A facsimile apparatus includes a transmission system for transmitting with respect to a line, an image signal from a modem, a receiving system for receiving signals from the line, a transmission error detector for detecting the presence of transmission error of received image signals, a backward signal generator for generating backward signals due to the transmission error, notifying the other party of the presence of transmission errors, retransmission circuit for retransmitting image signal when the backward signal is received, the retransmission circuit having a backward signal detector for detecting backward signals, a band pass filter passing signals in a predetermined frequency band, a band elimination filter passing signals in a frequency band other than a predetermined frequency band, an image communication control switcher for switching between an image transmission control and an image receiving control, and retransmission request switcher for switching retransmission control and a response control.

Abstract: A facsimile apparatus comprises a modem, a communication controller, an image reader, an image recorder, and a system controller, wherein the system controller comprises a first medium discriminating part for discriminating the type of the transmission medium used, an error detection part for detecting a transmission error upon reception of the received image data on the basis of a predetermined error detection standard, an error detection reference part for setting the predetermined error detection standard in accordance with type of the transmission medium discriminated by the first medium discriminating means, error reporting means for controlling the communication controller such that an error signal indicative of a transmission error is transmitted to another facsimile apparatus, and a second medium discriminating part for controlling the communication control means such that the type of the first transmission medium is reported to said another facsimile apparatus.

Abstract: Disclosed is a communication system which accommodates at least one central office network line and a plurality of extensions, and which is adapted to control line connection between the central office network line and the plurality of extensions. When a call from the central office network line is detected, it is determined in response to the call whether a control signal characteristic of data communication, such as a CST signal, is being sent by the other party's device. If such a control signal is being sent, a line to which a data processor is connected is selected and connected to the calling line. This makes it possible to connect an information processor and a telephone to a common central office network line, and to connect a call answered by another telephone to a desired information processor rapidly through a simple operation. Accordingly, it is unnecessary to assign a special-purpose central office network line to an information processor.

Abstract: A system and method for facilitating facsimile transmissions has one or more store and forward facilities, each associated with a plurality of subscriber facsimile machines, typically coupled over the switched telephone network. The store and forward facilities include a computer for controlling operations and mass data storage equipment. A subscriber to the system delivers an outgoing facsimile message to the store and forward facility with which it is associated, which records the fax message together with data as to originating facsimile machine and destination facsimile machine. The store and forward facility then delivers the facsimile message to the intended receiver facsimile machine, either directly or through another store and forward facility. If unsuccessful on an initial attempt, the store and forward facility periodically retrys to send the facsimile message.

Abstract: A facsimile communication apparatus is disclosed which is operable under either one of a facsimile mode for transmitting facsimile signal from a calling station along a telephone line to a called station, and a conversation mode for sending conversation signal from the calling station along the telephone line to the called station. The facsimile communication apparatus at the called station includes a detector for detecting a facsimile request signal indicative of a facsimile communication request made by a calling station within a predetermined period of time after a telephone line is connected to a facsimile communication apparatus of the calling station, and a signal producer for producing a facsimile request signal when the detector detects the facsimile request signal and for producing a conversation request signal when the detecting means detects no facsimile request signal within the predetermined period of time.

Abstract: A time adjusting system includes a facsimile machine having a real time clock and a center station in charge of management of accurate time information. The facsimile machine places a call to the center station at a predetermined time and receives accurate time information therefrom to thereby adjust the time of its own real time clock.

Abstract: A communication system for communicating a document comprising image data, character code data, and the like has: a receiver to receive the document data; a memory to store the received document data; a designating unit designate the data in the memory; an instructing unit to command the printing of the designated data; a printer to print the designated data on the basis of the instruction by the instructing unit; and a controller for allowing the received document data to be printed by the printer when a failure of the memory is detected even if printing is not commanded by the instructing unit. The failure of the memory may be a lack of memory capacity. The received document data may be output to either the memory or the printer in accordance with signals from the transmission side. This system includes another instructing unit to command the deletion of the designated document data from the memory.

Abstract: A communication system for communicating data such as image data has a transmitter and a receiver connected through a communication line. Each transmitter or receiver has an NCU, a modem, a control unit, a reader, a recorder, and a console unit. A sound output unit for producing a sound representing the state of a received image (the number of errors in the received image data) can be included in the transmitter or the receiver. After an operator at the transmitter sends data, the operator is called and can hear a sound message representing the state of the data received by the receiver.