Object filtering method and client device using the same

• US 20020046295A1
• Filed: 10/12/2001
• Published: 04/18/2002
• Est. Priority Date: 10/18/2000
• Status: Active Grant

• Current Assignee: Lenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
• Original Assignee: NEC Corporation
• Inventors: Asai, Takayuki
• Granted Patent: US 7,756,927 B2
• Time in Patent Office: Days
• US Class Current: 709/246
• CPC Class Codes: G06F 16/9577 Optimising the visualization of content, e.g. distillation of HTML documents
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/5682 Policies or rules for updating, deleting or replacing the stored data
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

If a control portion in a WAP terminal judges in step S1 that a session is established, the residual capacity of a memory portion is monitored at a predetermined time interval or any time interval in steps S2, S3. When the residual capacity of the memory portion is lower than a predetermined capacity, the control portion renews CPI information in step S5 and continues the operations of the steps S1 to S5 if the CPI information has not yet been renewed in step S4. If the CPI information has been renewed, the control portion continues the operations of the steps S1 to S4 without renewing the CPI information.

Claims

1. An object filtering method for filtering an object in a process of accessing, through a proxy server for relaying an access to various services of the Internet, a server which is disposed on the Internet and stores various types of objects and requesting the server to acquire a desired object, comprising:

a step of monitoring the residual amount of a memory capacity in a client;

a step of notifying a filtering condition from the client to said proxy server in accordance with the monitoring result; and

a step of filtering the object in accordance with the filtering condition thus notified by said proxy server.

2. The object filtering method as claimed in claim 1, wherein the filtering condition is notified from the client to said proxy server at a predetermined period.

3. The object filtering method as claimed in claim 2, wherein the predetermined period is freely set from the external.

4. The object filtering method as claimed in claim 1, wherein the filtering condition is validated only for a predetermined term.

5. The object filtering method as claimed in claim 1, wherein the filtering condition is represented by a filename extension of the object.

6. The object filtering method as claimed in claim 5, wherein said proxy server prohibits only a file having the filename extension notified from the client as the filtering condition from being transmitted to the client.

7. The object filtering method as claimed in claim 5, wherein said proxy server allows only a file having no filename extension notified from the client as the filtering condition to be transmitted to the client.

8. The object filtering method as claimed in claim 1, wherein the filtering condition is represented by the data length of the object.

9. The object filtering method as claimed in claim 8, wherein said proxy server prohibits a file having the data length exceeding the data length notified from the client as the filtering condition from being transmitted to the client.

10. The object filtering method as claimed in claim 1, wherein the client is a cellular phone terminal.

11. The object filtering method as claimed in claim 1, wherein said proxy server is a gateway server for WAP (Wireless Application Protocol).

13. The client device as claimed in claim 12, wherein said control means notifies the filtering condition to said proxy server at a predetermined period.

14. The client device as claimed in claim 13, wherein the predetermined period is freely set from the external.

15. The client device as claimed in claim 12, wherein the filtering condition is represented by a filename extension of the object.

16. The client device as claimed in claim 12, wherein the filtering condition is represented by the data length of the object.

17. The client device as claimed in claim 12, wherein said client device is a cellular phone terminal containing said control means and said memory means.

18. The client device as claimed in claim 12, wherein said client device is a WAP (Wireless Application Protocol) terminal containing said control means and said memory means.

12. A client device for accessing, through a proxy server for relaying an access to various services of the Internet, a server which is disposed on the Internet and stores various types of objects and requesting the server to acquire a desired object, comprising:

control means for controlling an access to the Internet to acquire the object; and

memory means for storing the object thus acquired, wherein when said control means detects that the memory residual amount of said memory means is equal to a predetermined memory residual amount or less, said control means notifies to said proxy server a filtering condition of the object transmitted to the client device self.