摘要:
Apparatus for reproducing a mechanically recorded signal which includes a storage element and a signal pickup device. The signal is mechanically recorded on the storage element by means of a series of deformations in the surface thereof. According to the invention, the pickup device is arranged to apply a compressive force against these deformations and to sense the variations in this compressive force resulting from relative motion between the pickup device and the surface of the storage element.
摘要:
A motion inducing system for playing sounds over a gramophone is provided. An electrical signal such as that from a digital music player is converted to lateral movement of a surface using a linear motion transducer. The lateral movement moves the stylus of a gramophone, and the music from the digital music source is played over the horn of the gramophone.
摘要:
An information recording medium having such a recording material layer on a substrate where reversible phase change between electrically or optically detectable states can be caused by electric energy or electromagnetic energy. The recording material forming the recording layer is either a material having a crystal structure including lattice defects in one phase of the reversible phase change or a material having a complex phase composed of a crystal portion including a lattice defect in one phase of the reversible phase change and an amorphous portion. Both portions contain a common element. A part of the lattice defects are filled with an element other than the element constituting the crystal structure. The recording medium having a recording thin film exhibits little variation of the recording and reproduction characteristics even after repetition of recording and reproduction, excellent weatherability, strong resistance against composition variation, and easily controllable characteristics.
摘要:
The invention relates generally to store information on magnetic or optical storage media by using one or more novel approaches alone or in combination. These novel approaches are capable of using at least one code which may comprise more than two values (FIG. 4d, 43). A first series of approaches for the storage of information applies generally to optical recording and reproducing system (FIGS. 7-10, optical media 66), while a second series of approaches applies generally to electric or magnetic recording and reproducing systems (FIG. 1-2, magnetic medium 1), Each series of approaches is capable of storing information data in one or more codes (FIG. 4d, 42a, 42b, 42c, 42d) and the use of at least one higher order code which is different from the traditional binary code of “0” and “1”.
摘要:
A memory device includes a substrate, at least a thin film superimposed on the substrate having a plurality of microholes formed in the thin film, with a first microhole having a zero depth designated as digital zero; and a second microhole having a specific depth (such as the microhole formed through the thickness of the thin film) designated as digital one; whereby upon scanning of the microholes by a focused electron beam, the physical property as responded in each microhole will be detected as a digital bit corresponding to the microhole, and the microhole, and the digital data of the memory device will be read or recorded in an easier and cost-saving way.
摘要:
A system for reading data from recording media having topographical features readable with a slider-mounted non-magnetic transducer sensitive primarily to changes in local aerodynamic boundary conditions.