Method and system for dynamically determining web resource to be loaded and saving space
View Patent ↗A method for dynamically determining web resource to be loaded and saving space is provided which determines whether to download a network resource according to a current network bandwidth and available memory space. When a user uses an embedded device in a wireless network environment to download a web-page, the browser only downloads a small part of the network resource to present, and if the user desires to download all network resources, he or she can select to download all network resources, so as to save the download time.
1. A method for dynamically determining web resource to be loaded and saving space, comprising:
(A) sending a request from a browser to link to a web-page;
(B) analyzing the web-page to be linked to determine at least one network resource required by the web-page;
(C) obtaining a content-length of the network resource from at least one server providing the network resource, and comparing a download time of the network resource with a predetermined first threshold; and
(D) downloading the network resource by the browser if the network resource has a content-length smaller than a predetermined second threshold determined by available memory space of the browser and a network bandwidth, wherein the predetermined second threshold is half the space of available memory, and the download time is smaller than the first predetermined threshold; otherwise, not downloading the network resource and displaying a small icon on a position of the browser where the network resource is designed to be displayed.
2. The method as claimed in claim 1 , wherein in step (C) , an HTTP “HEAD” command is used to obtain the content-length of the network resource.
3. The method as claimed in claim 2 , wherein in step (C), an HTTP header corresponding to the “HEAD” command includes a content-length and a type of the network resource to be downloaded.
4. The method as claimed in claim 1 , wherein in step (D) , the downloaded network resource is sent to a predetermined memory location.
5. The method as claimed in claim 1 , wherein in step (C), after obtaining the content-length of each network resource, the browser determines a size on a screen of the browser to display the network resource according to the content-length of each network resource.
6. A system for dynamically determining web resource to be loaded into an embedded device and saving space, comprising:
at least one network server for providing at least one network resource required by a web-page;
a browser core processing module included in the embedded device for linking to a web-page; and
a network resource management loading module included in the embedded device for establishing a link to at least one corresponding network server according to a web-page required by the browser core processing module and obtaining a content-length of every network resource required by the web-page, and then providing the content-length of every network resource to the browser core processing module, wherein for every network resource, the browser core processing module determines whether to download the network resource according to its memory space and a network bandwidth;
wherein the network resource management loading module compares a download time of the network resource with a predetermined first threshold, and if the download time is smaller than the predetermined first threshold, the network resource is downloaded;
wherein for every network resource, the network resource management loading module compares the content-length of every network resource with a predetermined second threshold, wherein the predetermined second threshold is half the space of available memory, and when the content-length of the network resource is smaller than the predetermined threshold, the network resource is downloaded;
otherwise, the network resource is not downloaded and a small icon is displayed on a position of the browser core where the network resource is designed to be displayed.
7. The system as claimed in claim 6 , wherein the network resource management loading module first selects a server having a relatively high number of network resources to be downloaded.
8. The system as claimed in claim 6 , wherein if the required network resource has a content-length smaller than the predetermined threshold, the network resource is downloaded; otherwise the network resource is not downloaded.
9. The system as claimed in claim 6 , wherein the download time of the network resource is:
T=L* 8 /B* 1000000,
wherein T is an estimated download time, L is a content-length of the network resource, B is a current connection speed (Mbps), and the predetermined threshold is 30 seconds.
10. The system as claimed in claim 6 , wherein a network resource having relatively small content-length is downloaded first.
11. The system as claimed in claim 6 , wherein the network resource management loading module first downloads a network resource having a relatively fast decoding speed.