Selection of transmission alphabet sets for short message services

• US 20040034693A1
• Filed: 08/13/2003
• Published: 02/19/2004
• Est. Priority Date: 08/14/2002
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: NEC Corporation
• Inventors: Agarwal, Prashant
• Granted Patent: US 7,450,664 B2
• Time in Patent Office: Days
• US Class Current: 709/206
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A receiver for text messages in a network includes a means to receive and demodulate a signal. A message type detector determines whether or not the message is a text message. If it is, a header decoder looks at the header of the text message for encoding information. An alphabet selector then selects an appropriate decoding alphabet from an alphabet memory to be used by a message decoder prior to display the text message on a display.

Claims

1. An apparatus for receiving text messages in a network, said apparatus comprising:

means to receive and demodulate a message;

means to detect a type of the message received;

means responsive to a received text message to determine an coding data set which has been used to encode the received text message;

means for selecting a coding data set from a local coding data memory for decoding-the received text message;

means for decoding the received text message; and

means for displaying the decoded message.

2. The apparatus according to claim 1, wherein said means for selecting further selects a coding data set from the coding data memory as a default alphabet.

3. The apparatus according to claim 2 wherein the default coding data set is selected when the apparatus moves into a different network for communication.

4. The apparatus according to claim 1, further comprising means for a sending a massage, wherein the coding data selected from a most recently received text message is used for a next text message to be sent by the apparatus.

5. The apparatus according to claim 4, wherein the default coding data set is selected when the apparatus moves into a different network for communication.

6. A method for receiving text messages in a network, said method comprising the steps of:

receiving and demodulating a message;

detecting a type of message received;

determining a coding data set used to encode the received message;

selecting the determined coding data set from a local coding data memory;

decoding the message; and

displaying the message.

7. The method according to claim 6, further comprising the steps of:

entering a message as an input message,

encoding the input message with the selected coding data set; and

transmitting the encoded massage.

8. The method according to claim 6, comprising the steps of:

detecting a movement into a different network for communication; and

selecting a default coding data set when the movement into the different network is detected.

9. The method according to claim 7, comprising the steps of:

detecting a movement into a different network for communication; and

selecting a default coding data set when the movement into the different network is detected.