Coded data generation or conversion – Digital code to digital code converters
Patent
1991-12-16
1993-08-10
Pellinen, A. D.
Coded data generation or conversion
Digital code to digital code converters
375112, H03M 700
Patent
active
052353320
ABSTRACT:
Apparatus for converting a DS3 digital signal in a DS3 frame format to a STS-1 digital signal in an STS-1 frame format as a function of a STS-1 local clock. DS3 AIS/Idle code generation means generates DS3 AIS/Idle code bytes in response to the local STS-1 clock signal. DS3 byte counter counts the DS3 AIS/Idle code bytes and generating an AIS/Idle bytecount enable control signal if the number of DS3 AIS/Idle code bytes is less than a predetermined number of DS3 bytes to be mapped in a given row of the STS-1 frame. STS-1 row counter counts pulses of the STS-1 local clock signal and generates a gapped STS-1 enable control signal, which is combined with the AIS/Idle bytecount enable control signal fed back to enable and disable the DS3 AIS/Idle code generation means for mapping DS3 AIS/Idle code bytes in the given row of the STS-1 frame. In a preferred embodiment the DS3 byte counter comprises a plurality of flip-flops and associated combinatorial logic for counting the DS3 AIS/Idle code bytes, and has combinatorial logic for receiving inputs from the plurality of flip-flops for generating an AIS/Idle bytecount enable control signal. The STS-1 row counter has a plurality of flip-flops and associated combinatorial logic for counting pulses of the STS-1 local clock signal, and has combinatorial logic which receives inputs from the plurality of flip-flops for generating a gapped STS-1 enable control signal. The apparatus also has a short row control signal generator for generating a short row control signal to the DS3 byte counter.
REFERENCES:
patent: 4967405 (1990-10-01), Upp et al.
patent: 5030951 (1991-07-01), Eda et al.
Alcatel Network Systems, Inc.
Pellinen A. D.
Young Brian K.
LandOfFree
Parallel DS3 AID/Idle code generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Parallel DS3 AID/Idle code generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parallel DS3 AID/Idle code generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1728553