Information is recorded on or reproduced from an elongate information carrier located in a casing having an aperture. To this end, a portion of the information carrier is pushed through the aperture while any end of the information carrier is retained inside the casing. The pushed-out portion is formed into a loop extending through the aperture to the outside of the casing. The desired function is performed on the elongate information carrier outside the casing.

The invention provides an information device comprising a casing including a viewing window and a closable writing aperture, means for supporting in said casing material to receive inscriptions, a take-up means to receive said inscription material after passage past the writing aperture and the viewing window, means for temporarily opening the writing aperture, and means for shifting the inscription material past said aperture and said viewing window.

A flat major surface of a disc-shaped substrate (e.g., of glass) is coated with a first light reflective layer (e.g., Rhodium) which is coated with a layer of a dielectric material (e.g., silicon dioxide) highly transparent of light of a frequency supplied by a playback laser, which transparent layer is coated with a second light reflective layer (e.g., Rhodium). The light output of a recording laser, which is intensity modulated in accordance with a signal to be recorded, is focused upon the co…

An information processor is comprised of a plurality of circuits each of which is controlled by firmware and connected to a common bus and has a contention circuit for the bus. An arithmetic control unit for controlling the execution of the firmware is provided with a timing control circuit. When the arithmetic control unit is going to issue a bus use request or has issued the request of when it is issuing an interrupt inhibit instruction or interrupts its operation, another unit connecting to t…

An information carrier is disclosed which comprises a base plate which supports a plurality of blocks. The base plate includes at least one guide rail. The blocks include an information bearing face portion and a guide strip. The guide strip is adapted to be slidably and matingly received by the guide rail, thereby mounting the blocks on the base plate. A first groove is located in the base portion adjacent one lateral edge and extending perpendicular to the guide rail. A second groove is locate…

A handwriting recognition device comprises a transducer surface responsive to a pen positioned thereon for representing the coordinate position of the pen as an electrical signal, and data processing means for recognizing a handwriting effected with the pen, the data processing means including a microprocessor based control controlling a read/write memory, a non-volatile read-only memory storing a handwriting recognition routine to store recognized handwriting in the read/write memory, and an in…

A warning device associated with a rotatable body comprising means on the rotatable body for creating a magnetic field, a receiving coil on a relatively stationary member arranged such that upon rotation of the rotatable body interaction with the magnetic field causes electrical pulses to be generated in the receiving coil and an electronic switching circuit operated by the pulses such that a warning is given upon occurrence of a predetermined condition, such as pressure of a vehicle wheel devia…

An arrangement for applying the bits of a binary coded word to the inputs of respective ones of a first plurality of reiterative digital stores in a predetermined time sequence. A further means is provided for subsequently applying a code of parity bits for the said binary word to the inputs of respective ones of a second plurality of reiterative digital stores in a predetermined time sequence. And also there is a means for causing the word and parity bits to traverse their respective stores in …

An article for the recording and storage of information includes a support and a layer for storing information provided on the support. The layer is amorphous and composed of a mixture which includes an element of the group bismuth, antimony and selenium and a different element of the group selenium and tellurium. Information may be recorded on the layer by burning away selected regions thereof with high-energy radiation such as a laser beam. A preferred mixture includes bismuth and selenium wit…

An information system includes an information carrier and a reading unit. The information carrier includes an inner and an outer layer, the outer layer constituting a protective casing surrounding the inner layer and hiding the information. The inner part is formed of at least one electrically conducting closed loop in which an electrical current is intended to be induced, this loop having a plurality of openings therein in the same plane. These openings are so positioned that at least two paral…