Facsimile device for use in ISDN and method of controlling same

Claim 1

A facsimile device which receives and records messages including image data from a digital network, wherein each of the messages includes a first identifier identifying a receiving facsimile device for receiving the image data, and wherein a second identifier to be compared with the first identifier is stored in the receiving facsimile device, said facsimile device comprising: receiving means for receiving one of the messages from the digital network; identifier extracting means for extracting the first identifier from said one of the messages received by the receiving means when said one of the messages includes the first identifier; storing means for storing the second identifier; comparison means for comparing the first identifier with the second identifier when the identifier extracting means extracts the first identifier and when the second identifier is stored in the storing means, to determine whether the first identifier coincides with the second identifier; recording means for recording the image data; received data retaining means for retaining the image data, to be one of recorded by the recording means and erased according to commands input by a user; and control means for controlling operations such that the receiving means receives the image data when any of the following conditions occur: (a) the first identifier coincides with the second identifier, (b) said one of the messages does not include the first identifier while said storing means does not store the second identifier, and (c) said one of the messages does not include the first identifier while said storing means stores the second identifier, said control means recognizing all of conditions (a), (b) and (c) and controlling the operations such that the receiving means ignores said one of the messages when none of (a), (b) and (c) occur, such that the image data is retained in the received data retaining means but not automatically recorded when condition (c) occurs, and such that when condition (a) or (b) occurs, the image data is recorded by the recording means.

Claim 9

A method of controlling a facsimile device which receives and records messages including image data from a digital network, wherein each of the messages includes a first identifier identifying a receiving facsimile device for receiving the image data, and wherein a second identifier to be compared with the first identifier is stored in the receiving facsimile device, said method comprising the steps of: receiving one of the messages which may include the first identifier; extracting the first identifier from said one of the messages when said one of the messages includes the first identifier; comparing the first identifier with the second identifier when the first identifier is extracted and when the second identifier is stored, to determine whether the first identifier coincides with the second identifier; receiving said one of the messages including the image data when any of the following conditions occur: (a) the first identifier coincides with the second identifier (b) said one of the messages does not include the first identifier while the second identifier is not stored, and (c) the first identifier is not included in said one of the messages while the second identifier is stored, and when none of said conditions (a), (b) and (c) occur, ignoring the message; recognizing all of conditions (a), (b) and (c); and retaining the image data to be one of recorded and erased according to commands input by a user when said condition (c) occurs, and when said conditions (a) or (b) occur, recording the image data.

Claim 10

A method of controlling a facsimile device which receives and records messages including image data from a digital network, wherein each of the messages includes a first identifier identifying a receiving facsimile device for receiving the image data, and wherein a second identifier to be compared with the first identifier is stored in the receiving facsimile device, said method comprising the steps of: receiving one of the messages which may include the first identifier; extracting the first identifier from said one of the messages when said one of the messages includes the first identifier; comparing the first identifier with the second identifier when the first identifier is extracted and when the second identifier is stored, to determine whether the first identifier coincides with the second identifier; receiving said one of the messages including the image data when any of the following conditions occur: (a) the first identifier coincides with the second identifier (b) said one of the messages does not include the first identifier while the second identifier is not stored, and (c) the first identifier is not included in said one of the messages while the second identifier is stored, and when none of said conditions (a), (b) and (c) occur, ignoring the message; recognizing all of conditions (a), (b) and (c); and retaining the image data to be one of recorded and erased according to commands input by a user when said condition (c) occurs, and when said conditions (a) or (b) occur, recording the image data.

Claim 13

A method of controlling a facsimile device which receives and records messages including image data from a digital network, wherein each of the messages includes a first identifier identifying a receiving facsimile device for receiving the image data, and wherein a second identifier to be compared with the first identifier is stored in the receiving facsimile device, said method comprising the steps of: receiving one of the messages which may include the first identifier; extracting the first identifier from said one of the messages when said one of the messages includes the first identifier; comparing the first identifier with the second identifier when the first identifier is extracted and when the second identifier is stored, to determine whether the first identifier coincides with the second identifier; and receiving said one of the messages including the image data to be recorded when any of the following conditions occur: (a) the first identifier coincides with the second identifier or (b) said first identifier is not included in the one of the messages, while the second identifier is not stored, and recognizing both of conditions (a) and (b), when neither of conditions (a) and (b) occur, ignoring said one of the messages.

Claim 14

A method of controlling a facsimile device which receives and records messages including image data from a digital network, wherein each of the messages includes a first identifier identifying a receiving facsimile device for receiving the image data, and wherein a second identifier to be compared with the first identifier is stored in the receiving facsimile device, said method comprising the steps of: receiving one of the messages which may include the first identifier; extracting the first identifier from said one of the messages when said one of the messages includes the first identifier; comparing the first identifier with the second identifier when the first identifier is extracted and when the second identifier is stored, to determine whether the first identifier coincides with the second identifier; and receiving said one of the messages including the image data to be recorded when any of the following conditions occur: (a) the first identifier coincides with the second identifier or (b) said first identifier is not included in the one of the messages, while the second identifier is not stored, and recognizing both of conditions (a) and (b), when neither of conditions (a) and (b) occur, ignoring said one of the messages.