COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND COMPUTER READABLE MEDIUM

• US 20120092694A1
• Filed: 05/26/2011
• Published: 04/19/2012
• Est. Priority Date: 10/13/2010
• Status: Active Grant

• Current Assignee: Fujifilm Business Innovation Corp. (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: TSUBOTA, Hirokazu
• Granted Patent: US 8,942,262 B2
• Time in Patent Office: Days
• US Class Current: 358/1.14
• CPC Class Codes: G06F 13/00 Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units interface circuits for specific input/output devices G06F3/00 ; multiprogram control therefor G06F9/46; multiprocessor systems G06F15/16
• CPC Class Codes: G06F 3/12 Digital output to print unit , e.g. line printer, chain printer
• CPC Class Codes: G06F 3/1211 Improving printing performance
• CPC Class Codes: G06F 3/1236 Connection management
• CPC Class Codes: G06F 3/1241 Dividing a job according to job requirements, e.g. black/white and colour pages, covers and body of books, tabs
• CPC Class Codes: G06F 3/1284 Local printer device
• CPC Class Codes: G06K 15/1821 Sending feedback on the reception process to the data source, e.g. indication of full buffer
• CPC Class Codes: G06K 15/4045 Managing the interface to the data source, e.g. choosing an interface for data reception
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0083 Formatting with frames or packets; Protocol or part of protocol for error control
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 12/50 Circuit switching systems, i.e. systems in which the path is physically permanent during the communication
• CPC Class Codes: H04L 2001/0096 Channel splitting in point-to-point links
• CPC Class Codes: H04N 1/00209 Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax
• CPC Class Codes: H04N 1/32619 with retransmission retransmission after changing the mode H04N1/3333
• CPC Class Codes: H04N 1/32641 of transmission or transmitted data, e.g. interruption or wrong number of pages
• CPC Class Codes: H04N 1/32797 Systems adapted to communicate over more than one channel, e.g. via ISDN changing transmission mode according to type of channel H04N2201/33364; multichannel or multilink communication protocols H04L69/14

Abstract

A communication device includes: a division unit that divides first data to be transmitted to another communication device via a transmission path including a plurality of lanes into a plurality of second data; a transmission unit that transmits the plurality of second data to the another communication device by distributing them to either one of the plurality of lanes; and an error notification reception unit that receives an error notification when an error is detected from one of the plurality of second data received by the another communication device. When the error notification reception unit receives the error notification, the division unit divides second data, in which an error is detected, into a plurality of third data, and the transmission unit retransmits the second data to the another communication device by distributing the plurality of third data to either one of the plurality of lanes.

Claims

1. A communication device comprising:

a division unit that divides first data to be transmitted to another communication device via a transmission path including a plurality of lanes into a plurality of second data;

a transmission unit that distributes the plurality of second data divided by the division unit to either one of the plurality of lanes, and transmits the plurality of second data to the another communication device; and

an error notification reception unit that receives an error notification when an error is detected from one of the plurality of second data received by the another communication device;

wherein when the error notification reception unit receives the error notification, the division unit divides second data, in which an error is detected, into a plurality of third data, and the transmission unit retransmits the second data to the another communication device by distributing the plurality of third data divided by the division unit to either one of the plurality of lanes.

2. The communication device according to claim 1, further comprising an error measurement unit that measures a number of times that the error notification reception unit receives the error notification with respect to each of the plurality of lanes,

wherein when the transmission unit distributes the plurality of second data or the plurality of third data to either one of the plurality of lanes, it distributes the plurality of second data or the plurality of third data to lanes other than a lane where the number of times measured by the error measurement unit reaches a given value.

3. A communication system, comprising:

a first communication device; and

a second communication device;

the first communication device including;

a division unit that divides first data to be transmitted to the second communication device via a transmission path including a plurality of lanes into a plurality of second data;

a transmission unit that distributes the plurality of second data divided by the division unit to either one of the plurality of lanes, and transmits them to the second communication device; and

an error notification reception unit that receives an error notification when an error is detected from one of the plurality of second data received by the second communication device,

wherein when the error notification reception unit receives the error notification, the division unit divides second data, in which the error is detected, into a plurality of third data, and the transmission unit retransmits the second data to the second communication device by distributing the plurality of third data divided by the division unit to either one of the plurality of lanes.

the second communication device including;

a reception unit that receives the plurality of second data or the plurality of third data from the first communication device;

an error detection unit that detects the error from the plurality of second data received from the first communication device; and

an error notification unit that notifies the first communication unit of the error when the error detection unit detects the error from one of the plurality of second data.

4. A computer readable medium storing a program causing a computer to execute a process, the process comprising:

dividing first data to be transmitted to another communication device via a transmission path including a plurality of lanes into a plurality of second data;

distributing the plurality of second data divided in the dividing to either one of the plurality of lanes, and transmitting them to the another communication device; and

receiving an error notification when an error is detected from one of the plurality of second data received by the another communication device;

wherein when the error notification is received in the receiving, second data in which the error is detected is divided into a plurality of third data, and the second data is retransmitted by distributing the plurality of third data to either one of the plurality of lanes.