Master-slave processor for dual mode mobile telephone

• US 7,292,557 B2
• Filed: 03/08/2002
• Issued: 11/06/2007
• Est. Priority Date: 03/15/2001
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens Communications Incorporated (Siemens AG)
• Inventors: Neumann, Thomas, Zeug, Bodo
• Primary Examiner(s): Pham; Chi
• Assistant Examiner(s): Tran; Phuc H
• Application Number:
  US10/096,233
• Publication Number:
  US 20020141441A1
• Time in Patent Office: 2,069 Days
• Field of Search: 370/320, 370342-345, 370/347, 370478-480, 370/498, 455/552.1
• US Class Current: 370/337
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A wireless telephone includes first and second baseband processors. The first baseband processor (GSM) functions as system master, and the second processor (TDMA) functions as system slave. The first baseband processor interfaces to system controls, such as power supply, man-machine interface (MMI), and the like.

Claims

1. A dual mode digital communication device, comprising:

a master baseband processor configured to provide baseband functions according to a first telecommunications standard in a first mode;

a slave baseband co-processor configured to provide baseband functions according to a second telecommunications standard in a second mode;

wherein said master baseband processor is configured to select said first mode or said second mode and control a plurality of shared interface functions;

wherein user data is passed from the master baseband processor to the slave baseband co-processor in the second mode.

2. A dual mode digital communication device in accordance with claim 1, said first telecommunications standard comprising a first TDMA standard, and said second telecommunications standard comprising a second TDMA standard.

3. A dual mode digital communication device in accordance with claim 2, said first TDMA standard comprising GSM, and said second TDMA standard comprising IS-136.

4. A dual mode digital communication device in accordance with claim 1, said plurality of shared interface functions comprising man-machine interface functions.

5. A dual mode digital communication device in accordance with claim 1, said plurality of shared interface functions comprising power supply functions.

6. A dual mode digital communication device in accordance with claim 1, further including a first radiofrequency controller interfacing said master baseband processor and a second radiofrequency controller interfacing said slave baseband co-processor.

7. A method, comprising:

providing a master baseband processor configured to provide baseband functions according to a first telecommunications standard In a first mode;

providing a slave baseband co-processor configured to provide baseband functions according to a second telecommunications standard in a second mode;

wherein said master baseband processor is configured to select said first mode or said second mode and control a plurality of shared interface functions;

wherein user data is passed from the master baseband processor to the slave baseband co-processor in the second mode.

8. A method in accordance with claim 7, said first telecommunications standard comprising a first TDMA standard, and said second telecommunications standard comprising a second TDMA standard.

9. A method in accordance with claim 8, said first TDMA standard comprising GSM, and said second TDMA standard comprising IS-136.

10. A method in accordance with claim 7, said plurality of shared interface functions comprising man-machine interface functions.

11. A method in accordance with claim 7, said plurality of shared interface functions comprising power supply functions.

12. A method in accordance with claim 7, further including providing a first radiofrequency controller interfacing said master baseband processor and a second radiofrequency controller interfacing said slave baseband co-processor.

13. A dual mode telecommunications device, comprising:

a first master baseband processor configured to provide baseband functions according to a first telecommunications standard in a first mode and configured to provide a control interface for said first mode and a second mode, said second mode comprising a second telecommunications standard;

a second slave baseband processor configured to provide baseband functions in said second model,

wherein user data is passed from the master baseband processor to the slave baseband co-processor in the second mode.

14. A dual mode telecommunications device in accordance with claim 13, said first mode comprising a first TDMA mode and said second mode comprising a second TDMA mode.

15. A dual mode telecommunications device in accordance with claim 13, said first master baseband processor adapted to control switching between said first mode and said second mode.

16. A dual mode telecommunications device in accordance with claim 13, further comprising a first RF control unit interfaced to said first master baseband processor, and a second RF control unit interfaced to said second slave baseband processor.

17. A dual mode telecommunication device in accordance with claim 14, said first TDMA mode comprising GSM, and said second TOMA mode comprising IS-136.

18. A dual mode digital communication device, comprising:

a master baseband processor configured to provide baseband functions according to a first telecommunications standard in a first mode;

a slave baseband co-processor configured to provide baseband functions according to a second telecommunications standard in a second mode;

wherein said master baseband processor is configured to select said first mode or said second mode and control a plurality of shared interface functions; and

wherein audio data is passed from the master baseband processor to the slave baseband co-processor in the second mode.

19. A dual mode digital communication device in accordance with claim 18, said shared interface functions including a reset control.