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(12) United States Patent

Watanabe

US006466545B1

(io) Patent No.: US 6,466,545 Bl (45) Date of Patent: Oct. 15,2002

(54) APPARATUS AND METHOD FOR TRANSMISSION RATE CONTROL

(75) Inventor: Yoshihiro Watanabe, Kanagawa (JP)

(73) Assignee: Fujitsu Limited, Kawasaki (JP)

( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.

(21) Appl. No.: 09/188,587

(22) Filed: Nov. 9, 1998

(30) Foreign Application Priority Data

Mar. 20, 1998 (JP) 10-072726

(51) Int. C I. 11(14.1 3/14

(52) U.S. CI 370/232; 370/253; 370/395.1

(58) Field of Search 370/229, 230,

370/231, 232, 233, 234, 235, 236, 253, 395, 396, 397, 398, 399

(56) References Cited

U.S. PATENT DOCUMENTS

5,812,527 A * 9/1998 Kline et al 370/232

5,889,761 A * 3/1999 Yamato 370/231

6,137,779 A * 10/2000 Miller et al 370/236

6,144,636 A * 11/2000 Aimoto et al 370/229

6,208,619 Bl * 3/2001 Takeuchi 370/229

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