Quadrature-to-serial pulse converter

Claim 2

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, said converter comprising a first circuit responsive to said quadrature pulse train for producing a third serial pulse train in which the number of pulses correspond to the total number of pulse edges in said quadrature pulse train, and a second circuit responsive to said third pulse train and each serial pulse train component that is present in said quadrature pulse train for (a) forming the pulses of said first and second pulse trains, (b) applying the formed pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train and (c) applying the formed pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train.

Claim 3

The converter defined in claim 1 wherein said first circuit comprises an exclusive OR gate having a pair of inputs for respectively receiving the serial trains making up said quadrature pulse train, inverter means connected to the output of said OR gate, a pair of one-shot multivibrators for respectively receiving pulses supplied by the output of said OR gate and by the output of said inverter means, and means connected to the outputs of said multivibrators to provide said third pulse train in which the number of pulses is the sum of pulses supplied by said multivibrator.

Claim 4

The converter defined in claim 2 wherein each of said multivibrators comprise circuit means for producing a delay in the rise time of each multivibrator produced pulse.

Claim 5

The converter defined in claim 1 wherein said first circuit includes a time delay network, the delay being substantially equal to the lengths of the pulses in said first and second trains.

Claim 6

The converter defined in claim 1 wherein said second circuit comprises a series of four storage devices for memorizing logic states applied to their inputs in response to a memory command pulse, and first means for receiving said quadrature pulse train and for continuously supplying the following logic states respectively to the inputs of said storage devices: AB, AB, AB, and AB, wherein A and A are the logic states of one serial pulse train component making up said quadrature train and B and B are the corresponding logic states of the other serial pulse train component making up said quadrature train, said first circuit being connected to said storage devices for supplying the pulses of said third train to said storage devices for recurrently commanding said storage devices to memorize the logic states supplied by said first means, and said second circuit further comprising second means connected to receive the memorized logic states at said storage devices and the logic states supplied by said first means, said second means being connected to said output terminals, said second means determining the direction of travel of said generator and cooperating with said storage devices and said first means to form the pulses of said first and second trains.

Claim 7

A converter for converting a quadrature pulsE train into a serial pulse train comprising an exclusive OR gate having its inputs connected to respectively receive the two pulse trains making up said quadrature pulse trains, inverter means connected to the output of said OR gate, a pair of one-shot multivibrators respectively connected to the output of said OR gate and to the output of said inverter means to respectively receive the pulses supplied by said OR gate and the inversion of the pulses supplied by said OR gate, and means connected to the outputs of said multivibrators to provide said serial pulse train in which the number of pulses are equal to the sum of the pulses supplied by said multivibrators.

Claim 8

A converter for converting a quadrature pulsE train into a serial pulse train comprising an exclusive OR gate having its inputs connected to respectively receive the two pulse trains making up said quadrature pulse trains, inverter means connected to the output of said OR gate, a pair of one-shot multivibrators respectively connected to the output of said OR gate and to the output of said inverter means to respectively receive the pulses supplied by said OR gate and the inversion of the pulses supplied by said OR gate, and means connected to the outputs of said multivibrators to provide said serial pulse train in which the number of pulses are equal to the sum of the pulses supplied by said multivibrators.

Claim 9

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, said converter comprising a pair of input terminals for respectively receiving the two serial pulse train components that make up said quadrature pulse train, first and second output terminals, and a circuit connected to said input terminals and to said first and second output terminals and responsive to each change of state in each of the serial pulse train components that is present in said quadrature pulse train for (a) forming a pulse for each change of state occurring in each of the serial pulse train components that is present in said quadrature pulse train, (b) applying the formed pulses to said first output terminal when said generator is traveling in one direction to make up said first pulse train, and (c) applying the formed pulses to said second output terminal when said generator is traveling in the opposite direction to make up said second pulse train.

Claim 10

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, said converter comprising a pair of input terminals for respectively receiving the two serial pulse train components that make up said quadrature pulse train, first and second output terminals, and a circuit connected to said input terminals and to said first and second output terminals and responsive to each change of state in each of the serial pulse train components that is present in said quadrature pulse train for (a) forming a pulse for each change of state occurring in each of the serial pulse train components that is present in said quadrature pulse train, (b) applying the formed pulses to said first output terminal when said generator is traveling in one direction to make up said first pulse train, and (c) applying the formed pulses to said second output terminal when said generator is traveling in the opposite direction to make up said second pulse train.

Claim 11

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, said converter comprising a first circuit receiving each serial pulse train component in said quadrature pulse train and responsive to said quadrature pulse train for producing a third serial pulse train in which the number of pulses correspond to the total number of pulse edges in said quadrature pulse train, and a second circuit receiving said third pulse train and each serial pulse train component that is present in said quadrature pulse train, said second circuit being responsive to said third pulse train and said quadrature pulse train for (a) forming an output pulse for each change of state occurring in each of the two serial pulse train components making up said quadrature pulse train, (b) applying the formed output pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train and (c) applying the formed output pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train.

Claim 12

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, said converter comprising a first circuit receiving each serial pulse train component in said quadrature pulse train and responsive to said quadrature pulse train for producing a third serial pulse train in which the number of pulses correspond to the total number of pulse edges in said quadrature pulse train, and a second circuit receiving said third pulse train and each serial pulse train component that is present in said quadrature pulse train, said second circuit being responsive to said third pulse train and said quadrature pulse train for (a) forming an output pulse for each change of state occurring in each of the two serial pulse train components making up said quadrature pulse train, (b) applying the formed output pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train and (c) applying the formed output pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train.

Claim 13

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, said converter comprising a first circuit responsive to said quadrature pulse train for producing a third serial pulse train in which the number of pulses correspond to the total number of pulse edges in said quadrature pulse train, and a second circuit means responsive to said third pulse train and said quadrature pulse train for (a) forming an output pulse for each change of state in said quadrature pulse train, (b) applying the formed output pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train and (c) applying the formed output pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train irrespective to those oscillations of said generator that produce changes of state in only one of the tWo pulse train components of said quadrature pulse train.

Claim 14

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, said converter comprising a first circuit responsive to said quadrature pulse train for producing a third serial pulse train in which the number of pulses correspond to the total number of pulse edges in said quadrature pulse train, and a second circuit means responsive to said third pulse train and said quadrature pulse train for (a) forming an output pulse for each change of state in said quadrature pulse train, (b) applying the formed output pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train and (c) applying the formed output pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train irrespective to those oscillations of said generator that produce changes of state in only one of the tWo pulse train components of said quadrature pulse train.

Claim 15

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, the logic states of the two pulse train components making up said quadrature pulse train having any one of four different And''ed combinations at a given time, said converter comprising a first circuit responsive to said quadrature pulse train for producing a third serial pulse train in which the number of pulses correspond to the total number of pulse edges in said quadrature pulse train, a second circuit responsive to said quadrature pulse train for developing signals that are indicative of said four And''ed combinations for each change of state in either of the pulse train components of said quadrature pulse train, and a third circuit responsive to said third pulse train and to the signals developed by said second circuit for (a) forming an output pulse for each change of state in each pulse train component of said quadrature pulse train, (b) applying the formed output pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train and (c) applying the formed output pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train.

Claim 16

A converter for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, the logic states of the two pulse train components making up said quadrature pulse train having any one of four different And''ed combinations at a given time, said converter comprising a first circuit responsive to said quadrature pulse train for producing a third serial pulse train in which the number of pulses correspond to the total number of pulse edges in said quadrature pulse train, a second circuit responsive to said quadrature pulse train for developing signals that are indicative of said four And''ed combinations for each change of state in either of the pulse train components of said quadrature pulse train, and a third circuit responsive to said third pulse train and to the signals developed by said second circuit for (a) forming an output pulse for each change of state in each pulse train component of said quadrature pulse train, (b) applying the formed output pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train and (c) applying the formed output pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train.

Claim 17

A circuit for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, there being four different possible combinations of logic states of the two serial pulse train components making up said quadrature pulse at any given time, said circuit comprising first logic gate means for logically multiplying the two logic states in each of said four combinations of logic states to provide a set of four logic signals that respectively indicate the products resulting from the four multiplications for each change of state occurring in said quadrature pulse train, means for temporarily and sequentially storing each set of said logic signals to retain each set until after the occurrance the set of said signals associated with the next change of state in said quadrature pulse train, and second logic gate means responsive to each set of said signals and to the stored set of said signals for (a) forming a pulse for each change of state occurring in said quadrature pulse train, (b) applying the formed pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train, and (c) applying the formed pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train.

Claim 18

A circuit for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, there being four different possible combinations of logic states of the two serial pulse train components making up said quadrature pulse at any given time, said circuit comprising first logic gate means for logically multiplying the two logic states in each of said four combinations of logic states to provide a set of four logic signals that respectively indicate the products resulting from the four multiplications for each change of state occurring in said quadrature pulse train, means for temporarily and sequentially storing each set of said logic signals to retain each set until after the occurrance the set of said signals associated with the next change of state in said quadrature pulse train, and second logic gate means responsive to each set of said signals and to the stored set of said signals for (a) forming a pulse for each change of state occurring in said quadrature pulse train, (b) applying the formed pulses to one output terminal when said generator is traveling in one direction to make up said first pulse train, and (c) applying the formed pulses to another output terminal when the generator is traveling in the opposite direction to make up said second pulse train.

Claim 19

A circuit for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, there being four different possible combinations of logic states of the two serial pulse train components making up said quadrature pulse at any given time, said circuit comprising logic gate means for logically multiplying the two logic states in each of said four combinations of logic states to provide a set of four logic signals that respectively indicate the products resulting from the four multiplications for each change of state occurring in said quadrature pulse train, and means for effecting a comparison between each set of said signals and the set of said signals associated with the next succeeding change of state in said quadrature pulse train for (a) applying a pulse to one output terminal for each change of state in said quadrature pulse train when said generator is traveling in one direction to make up said first pulse train and (b) applying a pulse to another output terminal for each change of state in said quadrature pulse train when the generator is tRaveling in the opposite direction to make up said second pulse train.

Claim 20

A circuit for converting a quadrature pulse train into first and second serial pulse trains which respectively correspond to opposite directions of travel of a generator supplying said quadrature pulse train, there being four different possible combinations of logic states of the two serial pulse train components making up said quadrature pulse at any given time, said circuit comprising logic gate means for logically multiplying the two logic states in each of said four combinations of logic states to provide a set of four logic signals that respectively indicate the products resulting from the four multiplications for each change of state occurring in said quadrature pulse train, and means for effecting a comparison between each set of said signals and the set of said signals associated with the next succeeding change of state in said quadrature pulse train for (a) applying a pulse to one output terminal for each change of state in said quadrature pulse train when said generator is traveling in one direction to make up said first pulse train and (b) applying a pulse to another output terminal for each change of state in said quadrature pulse train when the generator is tRaveling in the opposite direction to make up said second pulse train.