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.

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 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...

An information processor functions to continuously and successively read out from an external memory a plurality of records each consisting of a plurality of words, extract a record whose specified word used as a key word corresponds to the designated condition and store the record in a main memory and is characterized in that it comprises an address memory for successively writing each record in the main memory and receiving and storing an address data each time the heading address of each reco...

An information converter for converting analog-information not only into a digital value but also into a fractional analog value between digital values. An input capacitor stores an analog-information charge. An input is electrically connected with this input capacitor for charging the latter to an extent determined by the analog information. An output capacitor is provided with a capacitance less than that of the input capacitor. An oscillating circuit is electrically connected with both of the...

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 light-reflective layer (e.g., of aluminum) which is coated with a dielectric material (e.g., silicon dioxide) highly transparent for light of a frequency supplied by a recording laser, which dielectric material is coated with a thin layer of a material absorptive for light of the frequency supplied by the recording laser (e.g., titanium). The coating parameters are chosen to establish an anti-reflection condition f...

The invention relates to information transmission systems in which the band is spread at the transmitting end by means of a pseudo-noise sequence and is returned to normal at the receiving end by a similar sequence. In such systems it is essential that the frequency of the various oscillators used for the frequency conversions should be kept constant, or alternatively that the oscillators at the receiving end should be synchronized with the oscillators at the transmitting end. In accordance with...

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...