Showing papers by "Nokia published in 1985"

Video compression method

Abstract: The invention relates to a video compression method to be employed in connection with the conditional replenishment transmission and receiving method. In the transmitter there are detected such areas of the image that are changed with respect to the previous image, and the picture information representing the occurred changes, along with the addresses of the respective picture areas, is sent into the transmission channel. In the receiver there is reconstructed the new image on the basis of the previous image and the picture information representing the occurred changes. According to the invention, both in the transmitter and the receiver there is employed at least one reference memory (6; 14) whereinto a reference image of the transmitted picture information is stored and which reference memory is used so that whenever the transmitter recognizes a picture area to have changed, it is checked whether the changed picture information corresponds to the information stored in the respective location in the reference memory; if the answer is positive, the transmitter sends a code word informing te receiver that the required picture information must be picked from the reference memory; if the answer is negative, the picture information representing the changes occurred in the picture area is transmitted.

A calibration system for the calibration of mass flow controllers.

Abstract: Calibration system for the calibration of mass flow controllers (MFC1, MFC2, MFC3) of an apparatus used for a chemical vapour phase growth. Practice has shown that already minor deviations of the characteristics of the mass flow controllers from the ideal may be very disadvantageous in the production of the preform of an optic fiber, for instance. For the elimination of said problems, the present system comprises at least one mass flow meter (MFM1, MFM2) for measuring the characteristics of the mass flow controllers (MFC1, MFC2, MFC3) and means for calculating correction coefficients for the different controllers. The system preferably comprises at least one flow meter (MFM1, MFM2) for measuring at least the adjoining ranges of the mass flow controllers (MFC1, MFC2) covering adjacent flow ranges.

Method for the reception and detection of digital signals

Abstract: Described herein is a method for the reception and the detection of digital signals. According to the method at least two signals (s 1 , s 2 , . . . , s M ) having at least approximately the same information content are received and out of each received signal (S i ) is generated by means of a phase shift one in-phase baseband signal (s iI ) and one quadrature baseband signal (s iQ ). All in-phase baseband signals (s iI ) are summed in a first summing point (3a) and all quadrature baseband signals (s iQ ) in a second summing point (3b), both sum signals (y Ik and y Qk ) are fed to a detector (4) for detection and generating two detected output signals (s Ik and s Qk ), and a reference carrier (ca) is generated as a function of said two sum signals (y Ik and y Qk ) for carrying out a coherent demodulation. According to the invention a projection voltage (z k ) defined by the equation z k =y Qk s Ik -y Ik s.sub. Qk is generated, wherein y Ik is a signal sample in the in-phase branch before threshold decision in the detector, y Qk is the signal sample in the quadrature branch before decision, s Ik is the detected signal in the in-phase branch, and s Qk is the detected signal in the quadrature branch.

Stereophonic sound-reproducing device for a television receiver

Abstract: Bei der Vorrichtung zur stereophonen Tonwiedergabe in einem Fernsehempfangsgerat (1) sind alle weseritlichen Bauteile, wie Lautsprecher (6), Weichen, etc. in einem einzigen Gehause (3) untergebracht, das in den Raum oberhalb der Bildrohre (2) past und dort befestigt ist.

Air conditioning tube

Abstract: Air conditioning tube, which is shaped into an air disperser blowing in the incoming air, by punching a plurality of small apertures (3, 5) in the tube (1) wall (2) For at least a part of the apertures (3, 5), the aperture direction deviates from the direction perpendicular to the tube axle This axially inclined directing is caused by punching the above-mentioned apertures in such positions where the tube (1) wall has been designed to deviate from the axial direction Alternatively, the apertures can be designed as inclined deflector or there can be arranged decompression chamber between the apertures and the tube interior

Double extruder for the production of a two-layer tubular extruded product

Abstract: A double extruder for the production of a two-layer tubular extruded product, which extruder comprises a treating screw (8) rotatably mounted in a housing provided in a frame (2) and forming a ring-shaped treating space (21) between the frame and the screw, and inlet and outlet channels (13, 22, 23) extending to the periphery of the treating screw for supplying materials to be extruded into the treating space and for discharging the materials therefrom, and extrusion means (14) mounted in the frame and communicating with the outlet channel. The treating screw is tubular and forms two separate treating spaces together with the frame, each space extending from the outer periphery of the treating screw around the end edge to the inner periphery of the screw. The outlet channel is ring-shaped and joins radially the inner periphery of the tubular treating screw.

Process for making a fibre optic cable, cable obtained by the process and apparatus for carrying out the process

Abstract: The optical fiber (1 charged by the coil (2), passes through the extrusion head (3) and the cooling tank (4), the casing (11) being pulled by the draw-in reel (5). Then the casing (11) through the tray (6) from which the wiring member is removed by the auxiliary withdrawal means (8) under a voltage as low as possible. in the tray (6), its temperature is lowered to a value below room temperature, so that the withdrawal of the envelope ensures the excess length of the optical fiber.

Colour display tube

Abstract: (57) Fu, die Abstutzung der Schattenmakse (2) an den Stiften (5) im Rand (4) der Schirmwanne (1) werden Halteglieder (6) angegeben. (57) feet, the support of the Schattenmakse (2) on the pins (5) in the edge (4) of the screen tray (1) are shown holding elements (6). Die Halteglieder sind zweiteilig ausgebildet und durch Mittel miteinander verbunden, die eine Bewegung quer zur Symmetrieachse der Farbbildrohre zulassen. The holding members are constructed in two parts and joined by means to each other, which allow a movement transverse to the symmetry axis of the color picture tube. Diese Mittel konnen aus einem Drehgelenk oder einer Geradfuhrung bestehen. These means may consist of a swivel joint or a straight guide. Beim ersten Einsetzen der Schattenmaske (2) in die Schirmwanne ( 1 ) konnen durch die mogliche Querbewegung der Halteglieder (6) Toleranzen der Stifte (5) ausgeglichen werden. At the first insertion of the shadow mask (2) in the screen trough (1) may tolerances of the pins (5) are offset by the possible transverse movement of the holding members (6). Dabei wird der Abstand zwischen der Schattenmaske (2) und dem Leuchtschirm nicht beeinflust. Here, the distance between the shadow mask (2) and the phosphor screen is not affected.

Arrangement for an electronic entertainment apparatus with an adjustable control circuit operable from a plurality of different positions

Abstract: To the outputs of the selection pushbuttons (2) for adjusting a programming position in a control circuit (1) of an entertainment-electronics receiving, recording or playback arrangement, having a control circuit (1) which can be set to a plurality of different operating positions (BE I, BE II, ), there is additionally connected a changeover arrangement (18), the signal input (24) of which is connected, in a first switching position of the changeover arrangement, to the clock input (T1) for sequential selection of a program line (Zl1 to Zln) of a data circuit (4) and, in a second switching position, this signal input (24) is connected to a second clock input (T2) for sequential selection of the selectable data word locations (Pl1 to Pl4) of the selected program line After the first actuation of the selected selection pushbutton, the changeover arrangement is brought into the first switching position and, after actuation of the input pushbutton (E), which is provided for controlling a data word generator (9), it is brought into the second switching position This achieves the effect that the same input pushbutton is provided for programming in all the intended programming modes and that the same selection pushbutton with which the programming position of the control circuit is set is subsequently used also for the sequential selection of the program line and data word location

Fluorescent screen for display units and method for its manufacture

Abstract: not available for EP0170130Abstract of corresponding document: US4622272A luminescent screen for a picture display apparatus comprising a plate glass screen 1 and a luminophore layer 6 formed on the glass plate in depressions 4 that are surrounded by a black pigmented contrasted border layer 5. The luminescent screen has an optimum color purity and in particular off-color combinations on the surface of the layer of the respective color should be avoided and is undesirable. For this purpose, the invention provides that the luminous colors of the luminophore layer 6 comprising the luminous colors red (R), green (G) and blue (B) are applied to the screen glass plate 1 in a raster of line-like systematic arrangements by using a silk screening process. Luminescent screen according to the invention is employed as a flat plasma picture screen.

Anordnung der Unterhaltungselektronik mit einer in eine Vielzahl unterschiedlicher Betriebseinstellungen einstellbaren Steuerschaltung

Abstract: An die Ausgange der Auswahltastschalter (2) zur Einstellung einer Programmierbetriebseinstellung in einer Steuerschaltung(1) einer Empfangs-, Aufnahme- oder Wiedergabeanordnung der Unterhaltungselektronik mit einer Steuerschaltung (1), die in eine Vielzahl unterschiedlicher Betriebseinstellungen (BE I, BE II, ...) einstellbar ist, ist zusatzlich eine Umschaltanordnung (18) angeschlossen, deren Signaleingang (24) in einer ersten Schaltstellung der Umschaltanordnung mit dem Takteingang (T1) zur sequentiellen Auswahl einer Programmzeile (ZI1 bis Zln) einer Datenschaltung (4) verbunden ist und in einer zweiten Schaltstellung diesen Signaleingang (2 4 ) mit einem zweiten Takteingang (T2) zur sequentiellen Anwahl der anwahlbaren Datenwortplatze (PI1 bis PI4) der angewahlten Programmzeile verbunden ist. Die Umschaltanordnung wird nach der ersten Betatigung des gewahlten Auswahltastschalters in die erste Schaltstellung gebracht und nach Betatigung des Eingabetastschalters (E), der zur Steuerung eines Datenwortgebers (9) vorgesehen ist, in die zweite Schaltstellung gebracht. Dadurch wird erreicht, das zur Programmierung in allen vorgesehenen Programmierbetriebsarten der gleiche Eingabetastschalter vorgesehen ist und das der gleiche Auswahltastschafter, mit dem die Programmierbetriebseinstellung der Steuerschaltung eingestellt wird, anschliesend auch zur sequentiellen Auswahl von Programmzeile und Datenwortplatz verwendet wird.

Cathode-ray tube supporting rack

Abstract: A rack for supporting a cathode-ray tube during sealing of the screen portion of the tube to the bulb cone portion of the tube is disclosed The rack includes tubing mounted to the rack through which gas can be blown into the tube An exit end section of the tubing is of flexible design and includes a helical spring and a plurality of resilient leaf spring tongues for aligning the tubing in the neck of the cathode-ray tube