Abstract: A control console (1) for use in sound recording, and/or effects such as dubbing, the console (1) having a plurality, say 100 of sound channels, the console comprising a touch sensitive channel selector (2) having as many touch sensitive elements (3) as there are selectable channels of the console (1), whereby to select a channel by touch on the selector (2).

Abstract: A pressure-sensitive, conductive elastic sheet for use in a graphics digitizing tablet through which various letters or figures can be detected, the characteristics of which are such that the contact pressure is almost constant irrespective of contact area or increases with increasing contact area. The pressure-sensitive sheet according to the present invention comprises a silicon rubber in which a number of coarse, ferromagnetic, conductive metal particles with a diameter of 30 to 150 micron are mixed with a number of fine, ferromagnetic, conductive metal particles with a diameter of 10 micron or less or 50 micron or less at a predetermined proportion in such a manner that the coarse particles are aligned vertically through the interior thereof and the fine particles are dispersed near at least one surface thereof. To properly align the particles, the sheet is allowed to set within a uniform magnetic field.

Abstract: An apparatus is disclosed for use with teletypewriter consoles in teleprinter communication networks for providing transmission time information during message preparation; namely, the number of whole minutes of message time plus either the number of characters remaining to the next full minute, or tenths of minutes of additional message time used. Such information enables the user to anticipate and thus optimize message time for which he is charged in a rounding-up charge procedure commonly used in such teleprinter communication networks. A preferred embodiment consists of a microprocessor-based computer for converting each character on a perforated tape to a sub-unit of time corresponding to the appropriate transmission rate of either TELEX or TWX network services.

Abstract: A data processing machine, especially ciphering equipment, comprising an input device for the entering of data to be processed. The input device comprises a perforated tape reader containing a scanner unit for scanning standardized teleprinter perforated tapes which possess a number of parallel information tracks formed by information perforations and a feed track formed by feed perforations. The information perforations have a different diameter than the feed perforations. The scanner unit or device is connected with a circuit which, based upon the signals received from the scanner device, determines which of the scanned tracks constitute the information tracks and which the feed track.

Abstract: A perforated tape reading mechanism provides a programmable timing function. A drum rotatable by a synchronous motor carries the tape, and is supplied with a ratchet mechanism which permits the drum to rotate by said motor over a partial rotation and then returns the drum for another such cycle through a selectively variable number of ratcheted steps. A tape reader mechanism senses the perforations.