Method of storing and transmitting markup language documents in a mobile radio communications system

• US 6,349,202 B1
• Filed: 12/03/1998
• Issued: 02/19/2002
• Est. Priority Date: 12/03/1997
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Odamura, Satoshi
• Primary Examiner(s): Hunter, Daniel
• Assistant Examiner(s): TRAN, PABLO N
• Application Number:
  US09/204,689
• Time in Patent Office: 1,174 Days
• Field of Search: 455/38-- 3, 455/70, 455/186.1, 455/550, 455/525, 455/466, 455/414, 455/426, 455/68, 455/39.3, 455/32.1, 455/88, 455/412, 379/57, 379/88, 379/96, 379/97, 340/825.44, 340/825.22, 707/501, 707/513, 709/201-203, 709/229, 709/231, 709/217
• US Class Current: 455/412.1
• CPC Class Codes: G08B 5/227 with call or message storage means

Abstract

In order to effectively use a limited memory capacity of a mobile radio unit when storing a markup language document transmitted thereto, a lookup table, which includes a plurality of pairs of tags and shortened codes thereof, is memorized in the mobile radio unit. Thereafter, the mobile radio unit receives a message transmitted thereto. In the case where the incoming message is a markup language document, the mobile radio unit determines if a tag embedded in the markup language document has a corresponding shortened code in the lookup table. If the tag has the corresponding shortened tag in the lookup table, the markup language document is stored in the mobile radio unit while replacing the tag by the corresponding shortened code.

Claims

1. A method of storing a markup language document in a mobile radio unit, comprising the steps of:

(a) storing, in memory means of said mobile radio unit, a lookup table including a plurality of pairs of tags and shortened codes thereof;

(b) receiving, at said mobile radio unit, a message transmitted thereto;

(c) determining, in case said message is a markup language document, if a tag embedded in said markup language document has a corresponding shortened code in said lookup table; and

(d) storing, in said memory means, said markup language document, in which if said tag has the corresponding shortened code in said lookup table, said tag has been replaced by said corresponding shortened code.

2. A method as claimed in claim 1, wherein if said tag has no corresponding shortened code in said lookup table, a shortened code corresponding to said tag is created and added to said lookup table.

3. A method as claimed in claim 1, wherein said mobile radio unit is a mobile telephone terminal or a pager.

4. A method as claimed in claim 2, wherein said mobile radio unit is a mobile telephone terminal or a pager.

5. A method of storing a markup language document in a mobile radio unit, comprising the steps of:

(a) receiving, at said mobile radio unit, a message transmitted thereto;

(b) determining if said message is a markup language document;

(c) determining, if said message has been ascertained as a markup language document, if a tag embedded in said markup language document has a corresponding shortened code in a lookup table, said lookup table having been stored in said mobile radio unit and comprising a plurality of pairs of tags and shortened codes thereof;

(d) retrieving a shortened code, corresponding to said tag, from the lookup table if the tag has been ascertained as having a corresponding shortened code in the lookup table in step (c); and

(e) storing, in said mobile radio unit, said markup language document wherein said tag has been replaced by said corresponding shortened code.

6. A method as claimed in claim 5, wherein if said tag has no corresponding shortened code in the lookup table, a shortened code corresponding to said tag is created and added to the lookup table, thereby establishing a new pair of tag and shortened code thereof in the lookup table.

7. A method as claimed in claim 5, wherein said mobile radio unit is a mobile telephone terminal or a pager.

8. A method as claimed in claim 6, wherein said mobile radio unit is a mobile telephone terminal or a pager.

9. A method as claimed in claim 5, wherein in the case where a plurality of tags are embedded in the markup language document, steps (c) and (d) are repeated until all the tags have been checked if each tag has a corresponding shortened code in the lookup table.

10. A method as claimed in claim 5, further comprising the steps of:

(f) determining, if said message has been ascertained as a markup language document at step (b), if a shortened code representative of a tag is embedded in the markup language document; and

(g) retaining said shortened code in said markup language document if the shortened code has been determined as being embedded in the markup language document at step (f) and proceeding to step (d).

11. A method of transmitting and receiving a markup language between two mobile radio units, comprising the steps of:

(a) storing, at a plurality of mobile radio units, lookup tables respectively containing a plurality of identical pairs of tags and shortened codes thereof;

(b) preparing, at a first mobile radio unit, a message to be transmitted therefrom;

(c) determining if a shortened code embedded n the message to be transmitted is a code which is listed in the lookup table stored in the first mobile radio unit;

(d) performing no conversion of said shortened code to a corresponding tag if said shortened code is the code which is listed in the lookup table stored in the first mobile radio unit;

(e) converting said shortened code to a corresponding tag if said shortened code embedded in the message to be transmitted is the code which is not listed in the lookup table stored in the first mobile radio unit; and

(f) transmitting the message prepared at step (b) by way of step (d) or (e).

12. A method as claimed in claim 11, further comprising, at a second mobile radio unit to which the message is transmitted from said first mobile unit, the steps of:

(g) receiving the message transmitted to said second mobile radio unit;

(h) determining if said message is a markup language document;

(i) determining, if said message has been ascertained as a markup language document at step (h), if a shortened code is embedded in the markup language document;

(j) retaining said shortened code in said markup language document if the shortened code has been determined as being embedded in the markup language document at step (i);

(k) determining if a tag embedded in said markup language document has a corresponding shortened code in the lookup tables stored in said second mobile radio unit;

(l) retrieving a shortened code, corresponding to said tag, from the lookup table if the tag has been ascertained as having a corresponding code in the lookup table in step (k); and

(m) storing, in said mobile radio unit, said markup language document wherein said tag has been replaced by said corresponding shortened code.

13. A method as claimed in claim 12, wherein if said tag has no corresponding shortened code in the lookup table, a shortened code corresponding to said tag is created and added to the lookup table, thereby establishing a new pair of tag and shortened code thereof in the lookup table.

14. A method as claimed in claim 12, wherein said mobile radio unit is a mobile telephone terminal or a pager.

15. A method as claimed in claim 13, wherein said mobile radio unit is a mobile telephone terminal or a pager.