DATA TRANSFER SYSTEM, IMAGE FORMING SYSTEM, AND DATA TRANSFER PROGRAM

• Main Authors: NUMAKURA SATORU, OIZUMI MITSUHIRO, IKEDA JUNICHI, TERAO NORIYUKI, YONEDA YUTAKA, TAKEO MITSUYA, OSHIKIRI KOJI, SHINDO YASUYUKI, SASAKI TORU
• Format: Patent
• Language: English
• Published: 09.06.2005
• Edition: 7
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PROBLEM TO BE SOLVED: To improve data transfer efficiency by avoiding the competition of data transfer paths when processing a plurality of independent data transfer in parallel. SOLUTION: Each of devices A-D is made to have a plurality of end points A1-A4, ..., D1-D4 connected to upstream side switches 1A-1D, respectively and on the basis of information relative to device connection states in the system and device functions acquired from the devices A-D and information relative to the end points, an optimal inter-device path in a tree structure is determined. The determined path information is written and set to the devices A-D and the end points used by arbiters 2A-2D are arbitrated, thereby dynamically changing the tree structure so that e.g. paths 7, 8 become valid. Thus, even when processing a plurality of independent data transfer in parallel, the independent data transfer paths 7, 8 are ensured to avoid the competition of the data transfer paths. COPYRIGHT: (C)2005,JPO&NCIPI