Showing papers on "Wireless published in 1978"
Book•
01 Jan 1978
TL;DR: This book introduces the field of Frequency Modulation, and discusses its applications in telecommunications, as well as some of the techniques used in coding and amplitude modulation.
Abstract: 1 Introductory Topics 2 Amplitude Modulation: Transmission 3 Amplitude Modulation: Reception 4 Single-Sideband Communications 5 Frequency Modulation: Transmission 6 Frequency Modulation: Reception 7 Communications Techniques 8 Digital Communications: Coding Techniques 9 Wired Digital Communications 10 Wireless Digital Communications 11 Network Communications 12 Transmission Lines 13 Wave Propagation 14 Antennas 15 Waveguides and Radar
77 citations
Patent•
21 Sep 1978
TL;DR: In this article, the authors describe a system in which, for the purpose of the enlarged use of a remote control and to be able to control a plurality of functions with least possible keyboards, the control commands are put into a computer integrated in the remote control transmitter and converted by this through recorded programs into setting information signals which are transmitted through the transmitting stage (23, 32) to the receiver.
Abstract: In wireless and wirebound remote controls of telecommunications equipments, such as television and radio receiving equipments, the setting information signals are on the actuation of appropriate functional keys (21) transmitted through a transmitting stage (23, 32) and received in the equipment to be controlled and fed after demodulation to the functional setters. The number of functions to be driven is restricted to the number of keys (21) maximally standing at disposal. For the purpose of the enlarged use of a remote control and to be able to control a plurality of functions with least possible keyboards, the control commands are put into a computer (22) integrated in the remote control transmitter and converted by this through recorded programs into setting information signals which are transmitted through the transmitting stage (23, 32) to the receiver. The computer (22) lets itself be programmed for different signal evaluations with the aid of program carriers (31) which can be read in.
22 citations
Patent•
29 Jun 1978
TL;DR: In this article, the positions of mobile wireless stations can be determined automatically without using special equipment and facilities but by providing a very simple adapter for the base station, which can be used to adjust the position of the mobile base station.
Abstract: PURPOSE:In the wireless system having a great number of mobile wireless stations, positions of these mobile wireless stations can be determined automatically without using special equipment and facilities but by providing a very simple adapter for the base station
8 citations
22 Mar 1978
TL;DR: Wireless radio transmission at medium frequency (MF) is feasible for both personnel and vehicular communications in underground mines as mentioned in this paper, and does not suffer from the severe corner losses and leaky feeder installation requirements of UHF radio.
Abstract: Wireless radio transmission at Medium Frequency (MF) is feasible for both personnel and vehicular communications in underground mines. MF radio does not suffer from the severe corner losses and leaky feeder installation requirements of Ultra High Frequency (UHF) radio. Propagation data obtained in both coal and metal/nonmetal mines has encouraged several organizations to develop portable and base station equipment.
7 citations