摘要:
An image reading apparatus (9, 10) capable of shortening the reading processing time in image reading of high definition. In an image reading apparatus having a plurality of reading definition values, the state of a reading subject (13) is monitored with first definition. On the basis of a result of the monitoring, image reading (25) is conducted with second definition higher in definition than the first definition. A function (23, 35) of giving a stillness determination on an image of low definition is added. Switchover of the image to the high definition and read processing start are automatically carried out.
摘要:
A magnetic detector (Fig. 2 or 8) for detecting a magnetism present in the vicinity of or close to a magnetic wire (1, 1') circumferentially magnetized therein and an electromagnet (2) for generating an A.C. magnetic field on the basis of the magnitude of a Matteucci-effect voltage developed across the magnetic wire when the electromagnet approaches the magnetic wire. A coordinate input device (Fig. 1, 4 or 9) for detecting proximity between the electromagnet and an array of a plurality of such magnetic wires arranged in X and Y directions when the electromagnet approaches the array. A magnetic image sensor (Fig. 14) for detecting an intensity distribution of a static magnetic field to be detected and present along a longitudinal direction of the wire on the basis of a detection voltage of the wire when a plurality of such electromagnets arranged along the longitudinal direction of the wire are sequentially excited one after another.
摘要:
A magnetic detector (Fig. 2 or 8) for detecting a magnetism present in the vicinity of or close to a magnetic wire (1, 1') circumferentially magnetized therein and an electromagnet (2) for generating an A.C. magnetic field on the basis of the magnitude of a Matteucci-effect voltage developed across the magnetic wire when the electromagnet approaches the magnetic wire. A coordinate input device (Fig. 1, 4 or 9) for detecting proximity between the electromagnet and an array of a plurality of such magnetic wires arranged in X and Y directions when the electromagnet approaches the array. A magnetic image sensor (Fig. 14) for detecting an intensity distribution of a static magnetic field to be detected and present along a longitudinal direction of the wire on the basis of a detection voltage of the wire when a plurality of such electromagnets arranged along the longitudinal direction of the wire are sequentially excited one after another.
摘要:
An image reading apparatus (9, 10) capable of shortening the reading processing time in image reading of high definition. In an image reading apparatus having a plurality of reading definition values, the state of a reading subject (13) is monitored with first definition. On the basis of a result of the monitoring, image reading (25) is conducted with second definition higher in definition than the first definition. A function (23, 35) of giving a stillness determination on an image of low definition is added. Switchover of the image to the high definition and read processing start are automatically carried out.
摘要:
A coordinate input device based on Matteucci effect comprises a magnetic wire matrix (18), means (4, 49) for providing circumferential magnetization to said magnetic wires, a coordinate designator (2) for generating an A.C. magnetic field at its tip end, means (5, 7, 19-21, 23, 25-27), when said coordinate designator approaches any one of said magnetic wires, for detecting a Matteucci-effect voltage developed between both ends of said magnetic wire, and means (29) for determining a coordinate position of said coordinate designator pointed on the basis of a coordinate position of at least one magnetic wire detected by said voltage detection means respectively in said X and X directions.
摘要:
A magnetic image sensor comprises at least one magnetic wire (1), means (4, 59) for providing circumferential magnetization thereto, means (55, C1-C6) for generating a plurality of A.C. magnetic fields along a length direction of the magnetic wire, an A.C. power supply source (57), switch means (56) for supplying a current from said constant power supply source to said field generation means sequentially one after another, means (5, 7, 19-21, 23, 25-27) for detecting a Matteucci-effect voltage, developed across said magnetic wire by mutual reaction between the magnetic wire, said A.C. field generation means and a static magnetic field to be detected; and means (61) for forming an image of the static magnetic field.
摘要:
A magnetic image sensor comprises at least one magnetic wire (1), means (4, 59) for providing circumferential magnetization thereto, means (55, C1-C6) for generating a plurality of A.C. magnetic fields along a length direction of the magnetic wire, an A.C. power supply source (57), switch means (56) for supplying a current from said constant power supply source to said field generation means sequentially one after another, means (5, 7, 19-21, 23, 25-27) for detecting a Matteucci-effect voltage, developed across said magnetic wire by mutual reaction between the magnetic wire, said A.C. field generation means and a static magnetic field to be detected; and means (61) for forming an image of the static magnetic field.