Waveform producing system employing scanning of a waveform pattern

A waveform producing system which comprises:

• a pattern forming section comprising a magnetic flux generating source, and means for spatially distributing the magnetic field for forming a magnetic flux spatial pattern in the shape of a waveform to be produced;
• a conversion section comprising means for converting said magnetic flux pattern into electrical outputs which represent time-sequentially sampled amplitudes of the waveform;
• and a sequential read circuit for sequentially reading out the electrical outputs to produce the waveform;
• in which said pattern forming section comprises said magnetic flux generating source and a magnetic flux shielding plate constituted by a magnetic flux shielding region and a magnetic flux passing region shaped to form a magnetic pattern corresponding said waveform by shielding a part of the magnetic flux generated by the magnetic flux generating source, and said conversion section comprises a plurality of parallel lines of transducers for converting magnetic-energy to electrical energy, which operate to convert magnetic flux applied thereto as said magnetic flux pattern form said pattern forming section into electrical outputs which represent sequentially sampled amplitudes of said magnetic pattern and accordingly said waveform to be produced and which are time-sequentially read out by said sequential read circuit.

A waveform producing system which comprises:

• a pattern forming section comprising a magnetic flux generating source, and means for spatially distributing the magnetic field for forming a magnetic flux spatial pattern in the shape of a waveform to be produced;
• a conversion section comprising means for converting said magnetic flux pattern into electrical outputs which represent time-sequentially sampled amplitudes of the waveform;
• and a sequential read circuit for sequentially reading out the electrical outputs to produce the waveform;
• in which said pattern forming section comprises a magnetic card having a magnetized region defining a magnetic pattern corresponding to said waveform to be produced, and said conversion section comprises a magnetic head constituted by magnetic head segments each having means defining a first air gap and means defining a second air gap, said first air gaps defining a magnetic card insertion air gap for accommodating said magnetic card, and transducers for converting magnetic-energy to electric-energy which are disposed in said second air gap of the respective magnetic head segments, said magnetic card being inserted in said magnetic card insertion air gap so as to produce electrical outputs which represent time-sequentially sampled amplitudes of said magnetic pattern and accordingly said waveform to be produced and which are time-sequentially read out by said sequential read circuit.

A waveform producing system which comprises:

• a pattern forming section comprising a magnetic flux generating source, and means for spatially distributing the magnetic field for forming a magnetic flux spatial pattern in the shape of a waveform to be produced;
• a conversion section comprising means for converting said magnetic flux pattern into electrical outputs which represent time-sequentially sampled amplitudes of the waveform;
• and a sequential read circuit for sequentially reading out the electrical outputs to produce the waveform;
• in which said pattern forming section comprises a magnetic record medium having a magnetized region defining a magnetic pattern corresponding to said waveform to be produced, and said conversion section comprises parallel lines of first transducers for converting magnetic-energy to electric-energy which convert magnetic flux applied thereto as said magnetic flux pattern into electric outputs, a magnetic circuit having means magnetized for causing said electrical outputs from said transducers to be magnetically added separately in each of said parallel lines thereby to produce a magnetic field, and a second transducer for converting the strength of said magnetic fields produced by said magnetic circuit into electrical signals, which represent time-sequentially sampled amplitudes of said magnetic pattern and accordingly said waveform to be produced.

A waveform producing system which comprises:

• a pattern forming section comprising a magnetic flux generating source, and means for spatially distributing the magnetic field for forming a magnetic flux spatial pattern in the shape of a waveform to be produced;
• a conversion section comprising means for converting said magnetic flux pattern into electrical outputs which represent time-sequentially sampled amplitudes of the waveform;
• and a sequential read circuit for sequentially reading out the electrical outputs to produce the waveform;
• in which said conversion section comprises a magnetic-energy to electric-energy conversion section which comprises a substrate disposed in place on said magnetic pattern forming section and lines of magnetic-energy to electric-energy converters arranged on said substrate at intervals along the time axis of the waveform represented by said magnetic flux pattern, each of said converters comprising a plurality of magnetoresistive elements, said lines of magnetic-energy to electric-energy converters receiving magnetic flux as said magnetic flux pattern thereby producing electrical outputs which represent time-sequentially sampled amplitudes of said magnetic pattern and accordingly the waveform to be produced, said electrical output being time-sequentially read out by said sequential read circuit, said magnetic pattern forming section and said conversion section being formed into one unit.