Facsimile apparatus

• US 6,377,357 B1
• Filed: 02/05/1999
• Issued: 04/23/2002
• Est. Priority Date: 12/06/1993
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Sato, Akemi, Kimura, Masashi, Nakagawa, Kaori, Tachibana, Shunichi
• Primary Examiner(s): Nguyen, Madeleine
• Application Number:
  US09/245,044
• Time in Patent Office: 1,173 Days
• Field of Search: 358/405, 358/434, 358/437, 358/400, 358/403, 358/404, 358/444, 358/1.15, 358/1.16, 358/1.17, 358/1.14, 358/1.1, 379/100.01
• US Class Current: 358/1.15
• CPC Class Codes: H04N 1/32619 with retransmission retransmission after changing the mode H04N1/3333

Abstract

A facsimile apparatus capable of recalling a destination for retransmission when the transmission ends with a transmission error, comprises a memory unit for storing image data page by page; a transmission unit for transmitting the image data stored in said memory unit page by page; a detection unit for detecting a transmission error during the transmission of the image data by said transmission unit; an error page memory unit for storing a transmission error page based on the detection result by said detection unit; a line control unit for terminating the transmission with error and recalling the error terminated destination based on the detection of the transmission error by said detection unit; and a retransmission unit for causing said transmission unit to retransmit the image data stored in said memory unit from the error page stored in said error page memory unit after the line connection by the recalling by said line control unit.

Claims

1. A data communication apparatus capable of recalling a destination for retransmission when a transmission operation ends with a transmission error, comprising:

memory means for storing a sequential plurality of pages of data;

retransmission means for, when a transmission operation of the plurality of pages ends with a transmission error occurring during transmission of one of the plurality of pages, retransmitting in a separate transmission the one page as stored in said memory means; and

selection means for selecting one of a first mode and a second mode for said retransmission means, the first mode being one in which said retransmission means retransmits a first page of the plurality of pages, the one page and any of the plurality of pages following the one page, and the second mode being one in which said retransmission means retransmits only the one page and any of the plurality of pages following the one page.

2. An apparatus according to claim 1, wherein said retransmission means further has a third mode in which said retransmission means retransmits all of the plurality of pages, and wherein said selection means selects one of the first, second and third modes.

3. An apparatus according to claim 1, further comprising read means for reading a document sheet, wherein the pages of data are pages of image data read by said read means.

4. An apparatus according to claim 1, wherein said apparatus is a facsimile apparatus.

5. A data communication method operative in a data communication apparatus and capable of recalling a destination for retransmission when a transmission operation ends with a transmission error, said method comprising the steps of:

storing a sequential plurality of pages of data;

when a transmission operation of the plurality of pages ends with a transmission error occurring during transmission of one of the plurality of pages, retransmitting in a separate transmission the one page as stored; and

selecting one of a first mode and a second mode for said retransmission step, the first mode being one in which said retransmission step retransmits a first page of the plurality of pages, the one page and any of the plurality of pages following the one page, and the second mode being one in which said retransmission step retransmits only the one page and any of the plurality of pages following the one page.

6. A method according to claim 5, wherein said retransmission step further has a third mode in which said retransmission step retransmits all of the plurality of pages, and wherein said selection step selects one of the first, second and third modes.

7. A method according to claim 5, further comprising a read step of reading a document sheet, wherein the pages of data are pages of image data read in said read step.

8. A method according to claim 5, wherein the apparatus is a facsimile apparatus.