Method and apparatus for transferring information to a plurality of offices in series in a network

• US 6,018,773 A
• Filed: 04/03/1998
• Issued: 01/25/2000
• Est. Priority Date: 07/19/1995
• Status: Expired due to Term

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Watanabe, Kimio
• Primary Examiner(s): Rinehart, Mark H.
• Application Number:
  US09/055,370
• Time in Patent Office: 662 Days
• Field of Search: 340/825.02, 370/408, 370/429, 395/200.82, 395/200.83, 709/252, 709/253, 709/238, 709/220, 709/239, 709/244, 709/237
• US Class Current: 709/239
• CPC Class Codes: G06F 8/61 Installation
• CPC Class Codes: H04L 12/1854 with non-centralised forwarding system, e.g. chaincast

Abstract

A method of transferring information to a plurality of offices connected in series in a network includes the following steps. A step (a) is transferring the information from a server office to an intermediate office being substantially intermediate in the plurality of offices. A step (b) is setting the intermediate office which received the information in the step (a) to the server office. A step (c) is virtually dividing the plurality of offices into two groups which respectively include the server offices. And, a step (d) is repeating the steps (a) to (c) for each of the two groups.

Claims

1. An apparatus for transmitting information from a server office to a plurality of offices connected in series in a network, said apparatus comprising:

receiving means for receiving said information; and

transferring means for first transferring said received information to an intermediate office which is in said series and located at least a non-adjacent second office away from said server office, another office in said series being interpopsed between said server office and said intermediate office, said intermediate office functioning as a new server office and downloading the information received by the receiving means to additional offices located in said series at a downstream side of the intermediate office, wherein said transferring means also transfers said received information to at least one office located in said series at an upstream side of said intermediate office.

2. The apparatus as claimed in claim 1, wherein said apparatus further comprises a memory storing which office in said plurality offices is said intermediate office.

3. The apparatus as claimed in claim 1, wherein said apparatus further comprises calculating means for determining which office in said plurality offices is said intermediate office based on a network architecture.

4. The apparatus as claimed in claim 1, wherein said apparatus further comprises parallel-process control means for dividing said information into a plurality of blocks, and transmitting one block of said blocks to a next office every time said one block is received.

5. The apparatus as claimed in claim 1, wherein said apparatus further comprises:

first responding means for returning a response indicating a regular completion of receiving said information to an office which transferred said information to said apparatus; and

second responding means for receiving a plurality of said responses from other offices and for returning said plurality of responses to an office which previously transferred said information to said apparatus.

6. The apparatus as claimed in claim 1, wherein said transferring means comprises means for downloading software to said intermediate office.

7. The apparatus as in claim 1, wherein said server office and said plurality of offices are connected in said series.