Digital audio interface in a mobile telephone

Details Digital audio interface in a mobile telephone Digital audio interface in a mobile telephone

1994-01-24

1996-02-06

MacDonald, Allen R.

Telephonic communications

Special services

Anonymous party

379 58, G10L 900, H04M 1106

Patent

active

054902355

ABSTRACT:
A GSM mobile telephone includes a digital audio interface for interfacing with a system simulator for test purposes. A digital signal processor within the mobile telephone includes a codec data register that interfaces to an analog codec which provides A/D and D/A conversion of speech signals. An interface circuit is connected to the codec data register and includes a digital audio interface block and a test access port data register, both of which enable test data inputs and test data outputs to be respectively fed to the mobile telephone's digital signal processor and enable test functions to be accomplished without a requirement for loading of test program into the mobile telephone station.

REFERENCES:
patent: 4963824 (1990-10-01), Hsieh et al.
patent: 5023902 (1991-06-01), Anderson et al.
patent: 5115435 (1992-12-01), Langford, II et al.
patent: 5155733 (1992-10-01), Blecha, Jr.
patent: 5159598 (1992-10-01), Welles, II et al.
patent: 5295178 (1994-03-01), Nickel et al.
patent: 5305384 (1994-04-01), Ashby et al.
Conference Proceedings on Area Communication by Kall, Jun. 13-17, 1988, Stockholm, Sweden, "Eurocon 88", 8th European Conference on Electrotechnics, pp. 478-481.
Patent Abstracts of Japan, vol. 8, No. 173 (E-259) (1610) Aug. 9, 1984 and JP-A-59 66 233 (Nippon Denki K.K.) 14 Apr. 1984, p. 1.

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