Digital converter from pulse code modulation to continuous varia

Details Digital converter from pulse code modulation to continuous varia Digital converter from pulse code modulation to continuous varia

1974-07-26

1977-08-23

Sloyan, Thomas J.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340347DD, 179 15AP, H03K 1324

Patent

active

040443060

ABSTRACT:
A digital converter for digitally converting a coded signal being at a PCM rate into another coded signal flowing at a delta rate. First, the code of the PCM signal is converted into an intermediate code, this intermediate code being at a rate corresponding to the PCM rate. Then, the rate of the intermediate coded signal is converted into the rate of the delta signal. And, finally, the code of the intermediate signal is changed into the code of the delta signal.

REFERENCES:
patent: 3750144 (1973-07-01), Bolus et al.
patent: 3772678 (1973-11-01), Deschenes et al.
patent: 3825831 (1974-07-01), Ishiguro
patent: 3831167 (1974-08-01), Tewksbury
Cummiskey et al, "Adaptive Quantization in Differential PCM--," Bell System Tech. Journal, vol. 52, No. 7, Sept. 1973, pp. 1105-1118.
Published Patent Application No. B295,674, McDonald, Jan., 1975.

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