Registers – Systems controlled by data bearing records – Time analysis
Patent
1978-02-08
1980-01-22
Atkinson, Charles E.
Registers
Systems controlled by data bearing records
Time analysis
340347DD, G06F 1100
Patent
active
041851900
ABSTRACT:
Apparatus is disclosed for cumulative summing and compressing data items each of which is comprised of b binary elements. The summing and compressing apparatus is associated with control means to process each data item in a cumulative summing and compression cycle, and is comprised of an input buffer register which is designated to store a data item to be processed at the beginning of each cycle, a set of n intermediate registers occupying serial positions 1 ot n each of which has b storage locations, an adder circuit, an output buffer register made up of n sections having b storage locations, and transfer circuits which are connected to the control means, which produces a succession of control signals for successively interconnecting (1) the registers in serial positions 1 to (n-1) and the input buffer register, to the adder circuit in order to add the contents of the (n-1) registers and the data item to be processed at the beginning of each cycle and to transfer the result of this addition to the input buffer register; (2) the registers in serial positions 2 to n, to the registers in serial positions 1 to (n-1)in order to transfer the content of each of the registers in serial positions 2 to n to the register which precedes it in the order given, (3) the register in serial position n and the input buffer register, to the adder circuit in order to add the contents of these registers and to transfer the result of this addition to the register in serial position n, and (4) the registers in serial positions 1 to n, in parallel to respective ones of the n sections of the output bufrer register in order to transfer the contents of the n registers to the output buffer register so that, at the end of an N.sup.th cumulative summing and compression cycle, the contents of the output buffer register is a data item which has been compressed from a set of N data items which have been processed by the apparatus in N accumulation and compression cycles.
The invention is particularly concerned with locating a failure occurring in a data processing unit by determining a symptom which is the result of accumulation and packing a series of partial symptoms.
REFERENCES:
patent: 3490690 (1970-01-01), Apple
patent: 3689915 (1972-09-01), DeClerck
patent: 3715573 (1973-02-01), Vogelsberg
patent: 3726993 (1973-04-01), Lavallee
patent: 3772654 (1973-11-01), Evans et al.
patent: 3916387 (1975-10-01), Woodrum
Bottard Gilles J. M.
Henry Michel
Atkinson Charles E.
Compagnie Internationale pour L'Informatique CII-Honeywell Bull
Kondracki Edward J.
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