Patent Document

BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a facsimile machine, and in particular to a device which can be connected to an information processing apparatus, such as a personal computer or workstation, and which, in addition to performing the traditional functions of a facsimile machine, can also function at least as a printer for such information processing device. 
     2. Description of the Related Art 
     In recent years, there has been an increase in the use of facsimile machines which are connected to information processing apparatuses such as personal computers or workstations. In addition to the traditional facsimile functions of the transmission and reception of image data, these facsimile machines are also provided with a variety of functions which enable them to be used as printers for such information processing devices, as scanners, as modems and as copiers. It is also common for such facsimile machines to be equipped with their own memory to allow the reception of image data even when the device has run out of paper. 
     When a multi-function facsimile machine is used in an office which handles confidential documents, it can be desirable from a security point of view for the device to be set to not print out documents received when no-one is at the office, such as during the night. With such a setting, the reception images are stored in the facsimile memory and printer function of the facsimile machine is disabled. This disabling of the printer function can be achieved, for example, by intentionally removing the supply paper. 
     There is, however, a disadvantage with the construction described above. When the printer function is disabled to improve the security of data reception, this has the additional effect of disabling other functions, such the ability to serve as a printer for an information processing device. 
     SUMMARY OF THE INVENTION 
     It is a primary object of the present invention to provide a facsimile machine which can function normally, with the exceptions of the fundamental functions of the transmission and reception of image data, while maintaining the confidentiality of reception images. 
     This object can be achieved by a facsimile apparatus comprising: a printer for printing image data; a memory for storing image data; a reception unit for receiving image data from a sender facsimile machine; a setting unit for setting memory storage mode whereby reception image data from the sender facsimile machine is stored in the memory and is prohibited from being printed by the printer; an image data write unit for writing reception image data received during a setting of memory storage mode into the memory; a control unit for controlling a first operation and a second operation, wherein the first operation is performed with one of reception image data stored in the memory and reception image data which is being written into the memory, and wherein the second operation is performed with other image data, the other image data being different from the reception image data stored in the memory and the reception image data which is being written into the memory; and a prohibiting unit for prohibiting the first operation when the memory storage mode is set. 
     By means of the stated construction, although a first operation, which uses image data which is already stored in the memory or which is being written into the memory, is prohibited when memory storage mode is set, second operations are not prohibited, so that confidentiality can be maintained and the facsimile apparatus can be used as normal, with the exceptions of the fundamental functions of the transmission and reception of image data. 
     Here, the control unit may further control a polling reception operation, wherein the polling reception operation is an operation which has image data stored by a sender facsimile machine transmitted to the present facsimile apparatus according to an operation by the present facsimile apparatus and which has the present facsimile apparatus receive the image data, wherein the prohibiting unit prohibits a polling reception operation when memory storage mode is set. 
     Since polling reception operations are also prohibited by the above construction, the confidentiality of images can be maintained. 
     Here, the facsimile apparatus may further include an interface which can be connected to an external device and which is used for data transfer with the external device; a transferring unit for transferring image data received from the sender facsimile machine to the external device via the interface, when the interface is connected to the external device; and a transfer prohibiting unit for prohibiting any transfer of the reception image data by the transferring unit during memory storage mode. 
     Here, even when a transfer unit is provided in the facsimile apparatus for transferring reception image data to the external device, such transfers of image data are prohibited during memory storage mode by the transfer prohibiting unit. As a result, the confidentiality of reception images can be properly maintained. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     These and other objects, advantages and features of the invention will become apparent from the following description taken in conjunction with the accompanying drawings which illustrate a specific embodiment of the invention. In the drawings: 
     FIG. 1 shows the construction of the facsimile machine  1  of the present invention and of the information processing device  2  to which the facsimile machine  1  is connected; 
     FIG. 2 shows the control flow of the FAX system control unit  18 ; 
     FIG. 3 shows a continuation of the control flow in FIG. 2; 
     FIG. 4 shows the processing flow for setting memory storage mode; 
     FIG. 5 shows the processing flow for canceling memory storage mode; 
     FIG. 6 shows a processing flowchart for reception processing; 
     FIG. 7 shows the processing flow for the print out processing of confidential reception images; and 
     FIG. 8 shows the processing flow of polling reception processing. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     FIG. 1 shows the construction of the facsimile machine  1  of the present invention and of the information processing device  2 , made up of a personal computer, a host computer, a workstation, or the like, to which the facsimile machine  1  is connected. This facsimile machine  1  comprises a scanner unit  11 , a control panel  12 , an image compression/decompression unit  13 , a memory  14 , a network control unit  15 , a printer unit  16 , an interface  17 , and a FAX system control unit  18 . 
     The scanner unit  11  includes a document platen upon which a document is placed. It reads the document placed on the document platen and converts it into image data. 
     The control panel  12  receives a variety of indications from the user. Such indications include indications for setting memory storage mode, indications for canceling memory storage mode, indications for printing out confidential reception images, indications for polling reception, indications for data transmission, and indications for copying. Here, memory storage mode refers a mode in which reception image data from a sender facsimile machine is stored in memory  14  without being printed out or transferred to the information processing device  2 . An indication for printing out confidential reception images refers to an indication for a mode whereby image data is printed out after a password which corresponds to a confidential reception password appended to the reception images confidentially transmitted from the sender facsimile machine has been inputted. This is to say, printing out of the reception document is prohibited unless the correct password is inputted by the user. Polling reception refers an indication to the present facsimile machine  1  to have a transmitter facsimile machine transmit image data (which can be a document set on the document platen of the transmitter facsimile machine, image data stored in its memory, or the like) by an operation of the present facsimile machine. An indication for transmission is an indication for a standard transmission of image data. Here, the control panel  12  is provided with a display unit for displaying appropriate messages. 
     The image compression/decompression unit  13  compresses the images of documents to be transmitted, as well as decompressing the images from the sender facsimile machine. 
     The memory  14  stores image data of a document to be transmitted and image data received from a sender facsimile machine. These sets of image data are stored with identifiers to indicate whether they are a set of image data received from a sender facsimile machine or a set of image data to be transmitted to another facsimile machine. 
     The network control unit  15  is made up of a modem and an NCU (Network Control Unit) and is connected to a public communications network. It modulates image data to be transmitted and demodulates image data which has been received. 
     The printer unit  16  prints out reception images under the control of the FAX system control unit  18 . Here, “reception images” refers not only to images received from a sender facsimile machine but also to images transferred from the information processing device  2 . 
     The interface  17  connects the facsimile machine  1  to the information processing device  2  to allow the transmission of images to or from the information processing device  2 . It also receives instructions to transmit images, instructions for image print out, instructions for image scanning, and other such instructions from the information processing device  2 . Here, image transmission instructions have the facsimile machine  1  transmit images received from the information processing device  2  to a specified communication destination facsimile machine. Image print out instructions have the facsimile machine  1  print out images received from the information processing device  2 . Image scan instructions have the scanner unit  11  of the facsimile machine  1  scan a document set on the document platen and transmit the resulting image data to the information processing device  2 . 
     The FAX system control unit  18  controls every component in the facsimile machine  1 . Its control procedures are described in detail later in this specification. 
     On the other hand, the information processing device  2  connected to the facsimile machine  1  is composed of a memory  21  for storing images, an image compression/decompression unit  22 , a keyboard  23 , an external interface unit  24  which is connected to the interface  17 , a system control unit  25  and a display unit  26 . The information processing device  2  transmits images to the facsimile machine  1  and receives images sent from the facsimile machine  1 . It also issues image transmission instructions, image print out instructions, and image scan instructions which it outputs to the facsimile machine  1 . 
     The following is a detailed description of the control procedures executed by the FAX system control unit  18 , with reference to the flowcharts shown in FIGS. 2 through 8. 
     First, as shown in FIG. 2, if the indication received by the control panel  12  is an instruction for setting memory storage mode (step S 101 :yes), the FAX system control unit  18  sets memory storage mode (step S 102 ). 
     This setting of memory storage mode is shown in detail by the flowchart in FIG.  4 . First, the control panel  12  receives an indication from the user to reconfirm that memory storage mode is to be set (step S 201 ). Next, on receiving an indication confirming the setting of memory storage mode, the control panel  12  receives an indication from the user as to whether to set canceling time for memory storage mode (step S 202 ). This canceling time marks a time at which memory storage mode will be automatically canceled. If the user inputs a canceling time (step S 203 :yes), the control panel  12  receives an indication from the user as to whether a password is to be used (step S 204 ). Here, the setting of such a password controls whether the input of a password will be necessary when canceling memory storage mode. After an input which sets a password (step S 205 :yes), the FAX system control unit  18  sets memory storage mode (step S 206 ). 
     Next, as shown in FIG. 2, if an indication received by the control panel  12  is an indication to cancel memory storage mode (step S 103 :yes), the FAX system control unit  18  cancels memory storage mode (step S 104 ). 
     This canceling of memory storage mode is shown in more detail by the flowchart in FIG.  5 . First, the control panel  12  receives an indication from the user to reconfirm that memory storage mode is to be canceled (step S 301 ). Next, on receiving an indication confirming the canceling of memory storage mode, it is judged whether a canceling password was set when memory storage mode was set (step S 302 ) and when this is the case (S 302 :yes), the control panel  12  waits for the input of a password (step S 303 ). If there has been an input of a password which coincides with the canceling password inputted when memory storage mode was set (step S 304 :yes), the FAX system control unit  18  cancels memory storage mode (step S 305 ). It should be noted here that even when there has been no indication to cancel memory storage mode, the FAX system control unit  18  will automatically cancel memory storage mode when a cancelling time which was set together with memory storage mode in step S 203  in the flowchart in FIG. 4 is reached. 
     Next, the printer unit  16  prints out the reception image data stored in the memory  14  which was received from the sender facsimile machine (step S 306 ). Here, the printer unit  16  uses the identifiers appended to the image data to judge whether sets of image data in the memory  14  are image data which has been received from a sender facsimile machine. 
     Furthermore, as shown in FIG. 2, when images transmitted according to standard facsimile procedures by another facsimile machine are received via the network control unit  15  (step S 105 :yes), the FAX system control unit  18  performs a reception process (step S 106 ). 
     This reception process is shown in detail by the flowchart in FIG.  6 . First, the FAX system control unit  18  determines whether memory storage mode has been set (step S 401 ). If memory storage mode has been set, the FAX system control unit  18  has the image data received from the sender facsimile machine stored in the memory  14  of the facsimile machine  1  (step S 402 ) and prohibits print out of the reception images by the printer unit  16  of the facsimile machine  1  (step S 403 ). Here, when these images are stored in the memory  14 , the images are given an identifier to show whether that they are images which have been received from a sender facsimile machine. On the other hand, when memory storage mode has not been set (Step S 401 :no) and the facsimile machine  1  has not been connected to the information processing device  2 , (step S 404 :no) the reception images from the sender facsimile machine are printed out by the printer unit  16  (step S 405 ). Here, when memory storage mode has not been set but the facsimile machine  1  has been connected to the information processing device  2  (step S 404 :yes), the following processes are performed in accordance with the reception mode of the facsimile machine  1 . When the reception mode is set as “1”, the reception images received from the sender facsimile machine are printed out by the printer unit  16  (step S 405 ). When the reception mode is “2”, the FAX system control unit  18  does not have the reception images received from the sender facsimile machine printed out by the printer unit  16  and instead transmits the reception images to the information processing device  2  (step S 407 ). This transmission of the reception images is performed by sending the images via the interface  17  of the facsimile machine  1  to the external interface unit  24  of the information processing device  2 . When the reception mode is “3”, the FAX system control unit  18  has the reception images received from the sender facsimile machine transmitted to the information processing device  2  in addition to having the reception images stored in the memory  14  (step S 408 ). After this, it has the reception images in the memory  14  printed out by the printer unit  16  (step S 409 ). It should be noted here that when the reception images are confidential reception images, these images will be stored in the memory  14  and not printed out by the printer unit  16 , regardless of whether memory storage mode has been set. Here, the judgement as to whether confidential reception is to be performed for the reception images can be made, for example, by judging whether a confidential password has been appended to the reception images. 
     As shown in FIG. 2, when the control panel  12  has received an indication from the user for a print out of confidential reception images (step S 107 :yes), the FAX system control unit  18  performs print out processing for the confidential reception images (step S 108 ). 
     This print out processing is shown in more detail by the flowchart in FIG.  7 . First, the FAX system control unit  18  judges whether memory storage mode is presently set (step S 501 ). When this is the case, the FAX system control unit  18  has the display unit of the control panel  12  display a message showing that print out of the confidential reception images is not possible (step S 506 ). When memory storage mode is not set, the FAX system control unit  18  judges whether there is any confidential reception images in the memory  14  (step S 502 ). When confidential reception images is present in the memory  14 , the control panel  12  waits for the input of a password (step S 503 ). Here, when an inputted password coincides with the confidential password which is appended to the confidential reception images (step S 504 :yes), the FAX system control unit  18  has these confidential reception images stored in the memory  14  printed out by the printer unit  16  (step S 505 ). 
     As shown in FIG. 2, when the control panel  12  receives an indication for polling reception (step S 109 :yes), the FAX system control unit  18  performs polling reception processing (step S 110 ). 
     This polling reception processing is shown in more detail by the flowchart in FIG.  8 . First, the FAX system control unit  18  judges whether memory storage mode is presently set (step S 601 ). When this is the case, the FAX system control unit  18  has the display unit of the control panel  12  display a message showing that polling reception has been refused (step S 602 ). On the other hand, when memory storage mode is not set, the FAX system control unit  18  performs a polling reception operation (step S 603 ). 
     As shown in FIG. 3, when an indication for image transmission is received from either the control panel  12  or the information processing device  2  (step S 111 :yes), the FAX system control unit  18  performs transmission processing regardless of whether memory storage mode is presently set (step S 112 ). Similarly, when an indication for copying the document image of the document which is currently set on the document platen is received from either the control panel  12  or the information processing device  2  (step S 113 :yes), the FAX system control unit  18  performs copy processing regardless of whether memory storage mode is presently set (step S 114 ). Also, when an indication for printing out images is received from either the control panel  12  of the information processing device  2  (step S 115 :yes), the FAX system control unit  18  performs print out processing of the images outputted by the information processing device  2  regardless of whether memory storage mode is presently set (step S 116 ). Finally, when an indication for scanning the document image of the document which is currently set on the document platen is received from either the control panel  12  or the information processing device  2  (step S 117 :yes), the FAX system control unit  18  performs the scanning of the document image regardless of whether memory storage mode is presently set (step S 118 ). It then transfers the scanned image to the information processing device  2 . 
     It should be noted here that the facsimile machine of the present invention may be provided with a construction for printing out various kinds of reports. These reports may include communication records, lists of telephone numbers and error reports, such as transmission failure reports. The print out of such reports may be performed regardless of a setting of memory storage mode. 
     It is also possible for the information processing device which is connected to the facsimile machine of the present invention to be connected to the facsimile machine using a public telephone network. In such a case, the control procedure of the FAX system control unit  18  first judges whether image data is being transmitted from a sender facsimile machine via the network control unit  15  by judging whether data is being received according to facsimile procedures. When data is received according to facsimile procedures, the FAX system control unit  18  judges the image data has been transmitted from a sender facsimile machine and performs the reception processing shown as S 106  in FIG.  2 . On the other hand, when data has not been received according to facsimile procedures, the FAX system control unit  18  judges, for example, whether an image print out instruction has been included in the received data. When such a print out instruction is included in the received data, the FAX system control unit  18  performs the print out processing of step S 116 . Similar procedures are also performed for other kinds of instructions. 
     As described above, when memory storage mode has been set, the facsimile machine of the present embodiment is designed to only store images received from a sender facsimile machine in the memory  14 , so that print out of confidential reception images is not performed for a predetermined period. Polling reception processing is also forbidden during memory storage mode. On the other hand, other operations, such as image transmission, copying, printing out of images received from the information processing device and image scanning may be performed regardless of whether memory storage mode has been set. As a result, even if the present facsimile machine is connected to an information processing device, the functions of the facsimile machine aside from reception and transmission can still be performed as usual during memory storage mode, with the additional benefit of improved security for reception images. 
     Although the present invention has been fully described by way of examples with reference to the accompanying drawings, it is to be noted that various changes and modifications will be apparent to those skilled in the art. Therefore, unless such changes and modifications depart from the scope of the present invention, they should be construed as being included therein.

Technology Category: 5