International projectionist (Jan 1961-Dec 1962)

Italian Automatic Projector To Be Distributed in U.S. SAN FRANCISCO, CAL. — The exclusive U.S. distribution rights for Cinevue, an Italian-made automatic, sound-motion picture projector for showing selections of films in public places, have been granted to Don Tvvomey Associates, Inc., of New York City by the Society International Fonovision of Milan. The device, which can be either fitted for coin operation or for free institutional or sales aid use, has been marketed in Europe for several years. Extensive test marketing in selected areas on both the east and west coasts are scheduled for early summer as the initial U.S. marketing effort. Preliminary installations of the 5foot tall units will be in bowling alleys, super markets, and travel agencies. All units will have 40 film selections, each of 4-minute duration, sound, in both color and black and white. Film topics will range from bowling instruction to recipes and travelogues. How electrical noise is produced . . . calculated . . . measured . . . controlled Here are the basic facts about electrical noise — how it originates in circuits . . . what terms describe it . . . how to measure it . . . how to design circuits to minimize its undesirable effects. The physical nature of the various sources of noise are clearly described, including such sources as thermal agitation or resistance noise . . . shot noise in vacuum tubes and semiconductor junctions . . . noise from spontaneous emission of electromagnetic radiation . . . and noise in gas discharges. This practical book also explains auxiliary mathematical techniques, and discusses the relation of signal and noise in various types of communication systems. For ease in use, the simple tuned circuit associated with a device for measuring average power is made the basic tool for analyzing noise. ELECTRICAL MOJS8 270 pages, 6x9 105 illustrations $10.00 By WILLIAM R. BENNETT Data Communications Consultant, Bell Telephone Laboratories, Inc. Each chapter in this helpful book begins in a simple, practical manner and works toward more complicated examples. For example, properties of thermal noise and its relation to blackbody radiation are deduced from basic laws of thermodynamics and statistical mechanics. You also will find a clear treatment of elementary quantum mechanics in discussions of the maser and of noise in semiconductors. And, in describing noise properties of various devices, the book fills in your working background with basic facts on junction diodes — transistors — gas discharge tubes— klystrons— traveling wave amplifiers— and others. Both independent and dependent noise sources are analyzed. Jn addition to the standard theory of noise figure and its significance, a treatment is given of the more comprehensive Haus-Adler theory of noise measure. Throughout, the book stresses the universality of noise-like phenomena. Noise formulas for diodes and transistors; noise generation to meet specifications; design of amplifiers for minimum noise effects— these and many other topics are covered. A comprehensive review of noise in the various methods of signal transmission such as amplitude modulation . . . frequency modulation . . . and the different kinds of pulse modulation is included. CONTENTS 1. General Properties of Noise 2. Thermal Noise 3. Distribution of Magnitudes in Noise Sources 4. Noise in Vacuum Tubes 5. Noise in Semiconductors 6. Noise in Electromagnetic Radiation 7. Noise-generating Equipment 8. Noise Measurements and Techniques 9. Design of Low-noise Equipment 10. Application of Fourier Analysis to Noise Problems 11. Noise in Communication Systems INTERNATIONAL PROJECTIONIST Post Office Box 6174 Minneapolis 24, Minnesota Please send me a copy of "Electrical Noise" by William R. Bennett. (I enclose $10.00.) Name Address City & State Further marketing plans, according to Hal Fenton, vice president-sales for the visual aid and entertainment firm, call for the establishment of a nationwide sales and service organization. iP Former Strong VP Harold E. Brown Dies TOLEDO, OHIO — Harold E, Brown, 67, former vice-president o The Strong Electric Corporation, died today (Mar. 29) in his home following illness of over a year. He had retired from business early in 1960. Brown joined Strong Electric as office manager in 1935, coming from General Electric Sunply Co., and was elected vice-president in charge of sales, in 1954. He is survived by a wife, Edna, two Brown daughters and a son. Services will be Friday afternoon at the Bennett Funeral Home. iP Pay-TV Show Taped For Reshowing NEW YORK, APRIL 3 — The first video tape recording of a Broadway musical, simultaneously being telecast live to a subscription television audience, was completed Sunday evening by Reeves Sound Studios Division of Reeves Broadcasting & Development Corporation, it was announced today by Chester L. Stewart, president of the Reeves Sound Studios. Five television cameras were used to record the musical "Show Girl" starring Carol Channing, which was being presented at the Eugene O'Neil Theatre before a live audience. Output of the cameras was fed by coaxial cable to five video tape recorders at Reeves Sound Studios. Simultaneously, the Sound Studios also made three video tape recordings of the program as it was telecast to the Toronto audience. The five video tapes of the show now can be electronically edited and mixed on Reeves Sound Studios equipment for further showing at future dates. To make this recording achievement possible, Reeves Sound Studios locked all eight recording machines in absolute synchronization with its "synch-servo" process and simultaneously recorded the sound on five other tapes. iP 16 International Projectionist April 1961