[특허]Method for reducing perceived delay between a time data is requested and a time data is available for display

[미국특허] Method for reducing perceived delay between a time data is requested and a time data is available for display 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-017/30
출원번호	US-0366345 (1999-08-02)
발명자 / 주소	Banga Gaurav Douglis Frederick Jagadish Hosagrahar Visvesvaraya Rabinovich Michael
출원인 / 주소	AT&T Corp.
인용정보	피인용 횟수 : 29 인용 특허 : 12

초록 ▼

The apparent speed of a connection between a browser at a user station and a proxy or gateway on a network such as the Internet is increased by providing a local proxy at the user station which interacts with a remote proxy. While the remote proxy is retrieving a newly requested World Wide Web page, for example, from the appropriate content provider, it may also be sending to the local proxy a stale cached version of that page. When the new version of the page is finally retrieved, the remote proxy determines the differences between the new version and the stale version, and, assuming the differences do not exceed the new page in size, sends the differences to the local proxy which then reconstructs the new page from the differences and the stale version. The local proxy delivers the new page to the browser, which need not even be aware that a local proxy exists; it is aware only that it received the page it requested. Because computational speed and power are frequently higher and cheaper than transmission speed, the apparent speed of the connection between the user station and the network has been increased at modest cost.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for transferring data pages on a data network comprising:in response to a user station request for a data page recalling a base version of said data page;initiating, in response to a determination that said base version is not current, a retrieval of said data page from one of at least one servers to a gateway for transfer to said user station;determining, after receipt at said gateway of a response to said request, a difference between said requested data page and said base version of said data page;transmitting said difference to said user station;determining a measure of efficiency of said difference determining and difference transmitting steps;when said measure of efficiency indicates that sending said requested data page in its entirety from said gateway to said user station is efficient, sending said requested data page in its entirety from said gateway to said user station;comparing size of said difference to a minimum threshold, wherein said minimum threshold is represented by the equations: re D represents a total number of unsent bytes of said difference data, including said difference data that has been generated but not sent; D.sub.tot represents a total number of bytes of difference data that has been generated; C represents a number of byte of said requested data page that has already been processed; S represents the size of the base version of said data page; T.sub.small represents a minimum threshold; T.sub.large represent a maximum threshold; and F is a function of S,C, and T.sub.large ; andif said size of said difference exceeds said minimum threshold:aborting said recalling and transmitting steps, andsending said requested data page in its entirety from said gateway to said user station.

이 특허에 인용된 특허 (12) 인용/피인용 타임라인 분석

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Banga Gaurav ; Douglis Frederick ; Jagadish Hosagrahar Visvesvaraya ; Rabinovich Michael ; Vo Kiem-Phong, Method for reducing the delay between the time a data page is requested and the time the data page is displayed.
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Cawley Robin A. (Burghclere GB2) Stapleton Alan L. (Newbury GB2) Brown Ian M. (Caversham GB2), Video image processing system having variable data compression.
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[미국특허] Method for reducing perceived delay between a time data is requested and a time data is available for display 원문보기

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[미국특허] Method for reducing perceived delay between a time data is requested and a time data is available for display 원문보기

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