A data support such as a card or tape has a data-receiving surface delineated with rectangular digit areas in each of which a decimal digit can be recorded. Each digit area is delineated by a dark rectangular frame printed on the data-receiving surface, the area of the surface within the frame being subdivided into an array of elementary square areas arranged in three columns each of five elementary areas. Predetermined ones of the elementary areas, the second and fourth in the middle column, of…

A facsimile system is explained on the basis of a single unit which is connected to a video pick-up device and to a facsimile reconstruction device. The video signal is converted into a two level signal and the lengths of runs of the same level are metered by counting increments of such run lengths and converted the count numbers into a stream of ternary digits to distinguish length numbers for the runs of different signal levels by digit notation. These ternary encoded run length numbers pass t…

Apparatus is provided for reading information represented by at least one data line on a data carrier. Means are provided which define a path along which said data carrier is movable in a forward direction transversely to said data line. Line-reading means are adapted to detect said information when said data line is in a predetermined positon relative to said line-reading means. Position-detecting means are arranged to deliver a position-indicating signal when said data line is in said predeter…

A data recorder comprises a DC motor for driving a magnetic tape, a buffer register for temporarily storing input data, a counter adapted to be counted up by a value corresponding to an amount of data stored in the buffer register, a D-A converter connected to the counter and adapted to generate an output signal in accordance with the counted value and control the rotation of the motor, and a decoder for generating an output in accordance with the rotation speed of the motor. The data is read ou…

A viewer has a telescopic housing and includes a lens system carried by one housing part and a plurality of correlated information sources supported by another housing part and arranged serially along the optical axis of the lens system in a plurality of focal planes. At least one of the information sources comprises a transparency which has data thereon and is disposed between the lens system and another of the information sources. When the lens system is focused on the one information source t…

An improved, compact, power saving data latch having utilization as a synchronizer circuit or as a circuit to sample and store input data for subsequent signal processing. The presently improved data latch is fabricated by means including a static flip-flop cell. A transmission gate is connected between an input terminal of the flip-flop cell and a source of input data. A source of clock signals is connected to another input terminal of the flip-flop cell and to a control electrode of the transm…

The invention relates to a data register with a register card selection mechanism, whose selector keys connected with the swivel levers are arranged one behind the other and alongside one another in an opening of the housing in such a way that the width of each selector key corresponds to the width of the swivel levers, while the card restraining pins on each swivel lever are formed from U-shaped portions shaped onto the swivel lever end with a rod which engages from below in the register card o…

In a data processing system and method, particularly for processing data derived from a gauge which is measuring the thickness of continuous metal strip issuing from a metal processing plant, the value of the measurement data is sampled at successive time instants and the sampled values are processed such as to derive their mean and standard deviations. The successive time instants are randomly or psuedo-randomly distributed in time so as to avoid the possibility of the values of the data sample…

A data verifier for verifying the operation of a multiplexing system. The data verifier generates test information as an input to the multiplexing system. The multiplexing system processes the test information in the same manner as normal data. The data verifier then detects demultiplexed output information and compares it with reference information to determine if the multiplex system has functioned properly. The multiplex system is typically a metering system for metering the use of trunk line…

A data compressor with a plurality of serially connected shift registers compressing digital signals received from a data lift for transfer to a storage device which operates at a slower rate than the data lift generates digital signals. The data compressor eliminates from the data stream one of the frequently generated digital signals or a closely related group thereof and substitutes an address of the next digital signal which is not of the group being eliminated. Further, the data compressor …