METHOD FOR MAGNETIC RECORDING AND READING OF INFORMATION Russian patent published in 1996 - IPC

FIELD: computer engineering, home appliances, instruments. SUBSTANCE: method involves generation of recording channel on film magnetic carrier, conversion of information to magnetic signal and affecting magnetic carrier to provide possibility to read information. Recording channel is generated along axis of hard magnetizing of thin magnetic film which has single magnetic axis and which anisotropy field is Hk. Film is magnetized along easy magnetizing axis and uniform magnetic field Hu is generated in this direction. Another channel, which has single magnetic axis, is generated in parallel to recording channel. Said channel has easy magnetizing axis, which is located along it, and flat domain which local scattering field on its border to recording channel is Hm. Values conform to equation Hm<Hk. Magnetic field of signal is generated in opposite to uniform field along all of recording channel. Permissible minimal and maximal values of this field are H(t)min and H(t)max keeping equation H(t)min-Hu>Hn and H(t)max- Hu<Hc, where Hn is development field of part of recording channel if local field Hm is presented, Hc is coercive force of channel part. EFFECT: increased functional capabilities.