Compression of statistical data for computer tape storage

Claim 1

A system for compression of statistical data for computer tape storage comprising a 6-place digital accumulator, and means for feeding input counts into said accumulator, said means including a scaler and circuit means for permitting the first eight input counts to be recorded individually by said accumulator, for then permitting said scaler to insert a first scale factor of 3 between said input and said accumulator with every third subsequent count being recorded by said accumulator until said accumulator is filled to a first predetermined level, for then permitting said scaler to insert a second scale factor of 6 between said input and said accumulator with every sixth subsequent count being recorded by said accumulator until said accumulator is filled to a second predetermined level, and then finally permitting said scaler to insert a third scale factor of 12 between said input and said accumulator with every 12th subsequent count being recorded by said accumulator until the last four channels of said accumulator are filled, said circuit means including a first, second, third, fourth, and fifth input NAND gate; a sixth NAND gate connected between said first input NAND gate and said scaler; a first NOR gate connected between the outputs of said second, third, fourth, and fifth input NAND gates and said accumulator; said scaler having its scale factor 3 output connected to said third, fourth, and fifth input NAND gates, having its scale factor 6 output connected to said fourth and fifth input NAND gates, and having its scale factor 12 output connected to said fifth input NAND gAte, and a second, third, and fourth NOR gate connected between said accumulator and said second, third, and fourth input NAND gates; said second, third, and fourth NOR gates being respectively associated with said first 8-count level, said first predetermined count level, and said second predetermined count level within said accumulator and being connected in such a manner that while said first eight counts are being recorded by said accumulator said second input NAND gate is enabled while said third and fourth input NAND gates are disabled, then while every third subsequent count for the next 21 input counts is being recorded by said accumulator and said first scale factor of three is enabled said third input NAND gate is enabled while said second and fourth input NAND gates are disabled, then while every sixth subsequent count for the next 102 input counts is being recorded by said accumulator and said second scale factor of 6 is enabled said fourth input NAND gate is enabled while said second and third input NAND gates are disabled, and while every 12th subsequent count for the next 324 counts is being recorded by said accumulator and said third scale factor of twelve is enabled said fifth input NAND gate is enabled while said second, third, and fourth input NAND gates are disabled and after the next subsequent count is recorded the accumulator is filled and the stored compressed count becomes 60, which corresponds to an input count of 456.

Claim 2

A system for compression of statistical data for computer tape storage comprising a 6-place digital accumulator, and means for feeding input counts into said accumulator, said means including a scaler and circuit means for permitting the first eight input counts to be recorded individually by said accumulator, for then permitting said scaler to insert a first scale factor of 3 between said input and said accumulator with every third subsequent count being recorded by said accumulator until said accumulator is filled to a first predetermined level, for then permitting said scaler to insert a second scale factor of 6 between said input and said accumulator with every sixth subsequent count being recorded by said accumulator until said accumulator is filled to a second predetermined level, and then finally permitting said scaler to insert a third scale factor of 12 between said input and said accumulator with every 12th subsequent count being recorded by said accumulator until the last four channels of said accumulator are filled, said circuit means including a first, second, third, fourth, and fifth input NAND gate; a sixth NAND gate connected between said first input NAND gate and said scaler; a first NOR gate connected between the outputs of said second, third, fourth, and fifth input NAND gates and said accumulator; said scaler having its scale factor 3 output connected to said third, fourth, and fifth input NAND gates, having its scale factor 6 output connected to said fourth and fifth input NAND gates, and having its scale factor 12 output connected to said fifth input NAND gAte, and a second, third, and fourth NOR gate connected between said accumulator and said second, third, and fourth input NAND gates; said second, third, and fourth NOR gates being respectively associated with said first 8-count level, said first predetermined count level, and said second predetermined count level within said accumulator and being connected in such a manner that while said first eight counts are being recorded by said accumulator said second input NAND gate is enabled while said third and fourth input NAND gates are disabled, then while every third subsequent count for the next 21 input counts is being recorded by said accumulator and said first scale factor of three is enabled said third input NAND gate is enabled while said second and fourth input NAND gates are disabled, then while every sixth subsequent count for the next 102 input counts is being recorded by said accumulator and said second scale factor of 6 is enabled said fourth input NAND gate is enabled while said second and third input NAND gates are disabled, and while every 12th subsequent count for the next 324 counts is being recorded by said accumulator and said third scale factor of twelve is enabled said fifth input NAND gate is enabled while said second, third, and fourth input NAND gates are disabled and after the next subsequent count is recorded the accumulator is filled and the stored compressed count becomes 60, which corresponds to an input count of 456.

Claim 4

A system for compression of statistical data for computer tape storage comprising a 6-place digital accumulator provided with a single input thereto, and means for feeding input counts into said accumulator by way of said accumulator input, said means including a first circuit means for permitting a first predetermined number of input counts to be recorded and stored individually by said accumulator, said feeding means further including a scaler and a second circuit means associated with said scaler and said accumulator for then permitting said scaler to insert a first scale factor between said input counts and said accumulator input thus effecting one compressed count to be recorded and stored by said accumulator out of each increment of subsequent input counts as set by said first scale factor until said accumulator is filled to a first predetermined level, said second circuit means then permitting said scaler to insert a second scale factor between said input counts and said accumulator input thus effecting one compressed count to be recorded and stored by said accumulator out of each increment of subsequent input counts as set by said second scale factor until said accumulator is filled to a second predetermined level, said second circuit means then permitting said scaler to insert a third scale factor between said input counts and said accumulator input thus effecting one compressed count to be recorded and stored by said accumulator out of each increment of subsequent input counts as set by said third scale factor until the remaining levels of said accumulator are filled, whereby the information now stored in the completely filled accumulator is adapted to be read onto magnetic or paper storage tape.

Claim 5

A system for compression of statistical data for computer tape storage comprising a 6-place digital accumulator provided with a single input thereto, and means for feeding input counts into said accumulator by way of said accumulator input, said means including a first circuit means for permitting a first predetermined number of input counts to be recorded and stored individually by said accumulator, said feeding means further including a scaler and a second circuit means associated with said scaler and said accumulator for then permitting said scaler to insert a first scale factor between said input counts and said accumulator input thus effecting one compressed count to be recorded and stored by said accumulator out of each increment of subsequent input counts as set by said first scale factor until said accumulator is filled to a first predetermined level, said second circuit means then permitting said scaler to insert a second scale factor between said input counts and said accumulator input thus effecting one compressed count to be recorded and stored by said accumulator out of each increment of subsequent input counts as set by said second scale factor until said accumulator is filled to a second predetermined level, said second circuit means then permitting said scaler to insert a third scale factor between said input counts and said accumulator input thus effecting one compressed count to be recorded and stored by said accumulator out of each increment of subsequent input counts as set by said third scale factor until the remaining levels of said accumulator are filled, whereby the information now stored in the completely filled accumulator is adapted to be read onto magnetic or paper storage tape.