Telecommunications – Interference signal transmission
Patent
1991-09-30
1995-04-04
Pascal, Robert J.
Telecommunications
Interference signal transmission
455 45, 455103, 381 81, 381 77, 269 3, 269 7, 269 47, H04H 102
Patent
active
054045665
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a process for generating an entertainment audio signal interrupted by advertising audio signals in which pilot signals associated with the advertising audio signals cause switching between the entertainment audio signals and the advertising audio signals, and to a device for carrying out the process. Process and device according to the invention may be utilized in commercial establishments, such as department stores or supermarkets, for the pleasure of the customers therein and for increasing sales of definite articles and services.
Known audio performances in shops include two components, an entertainment or music program and different commercials which shortly interrupt or blot out the entertainment program, and which announce e.g. special offers. These different programs are not broadcasted by one central transmitter. In each commercial establishment, the entertainment program and the commercials are played by two different tape recorders. This includes the disadvantage that a relatively expensive distribution system is necessary to supply the commercial establishments with cassettes having the actual entertainment and advertising programs.
Such a tape-reproduction device is described in the German Gebrauchsmuster 19 88 049 comprising a time switch arrangement which causes that a first cassette comprising a music program is switched off and a second cassette comprising the commercials is switched on. A switching back to the starting condition is controlled by a distance marker on the tape of the second Cassette, by means of modulation or timing pulses. For the user, only the advertising program on the cassettes is available. Further, the apparatuses cannot be programmed such that the reproduction of individual stored commercials can be suppressed or not suppressed and the volume of reproduction is not adjustable.
To broadcast a radio program for commercial establishments from a station via satellite, radio or cable is only profitable due to the high costs for renting a carrier frequency if at least 10 to 15 different chains of shops can receive the program with the same frequency. On the other hand, different chains of shops want to broadcast different programs, especially to broadcast different commercials.
Further, it should be not advertised in an individual shop for an article which is sold out. In the other shops of the chain, this specific commercial should be further broadcasted. There is further a need for special commercials such as advertising programs for proprietary articles as known from radio which should be not suppressed since the companies pay for broadcasting their commercials in supermarkets. These "industry commercials" are alternatively broadcasted with so-called "special offer commercials". It should be guaranteed that the industry commercials are broadcasted in all shops having shop radio.
A simultaneously parallel broadcasting of different radio programs via one carrier frequency would be possible with a modulation such as used by the post office to transmit a plurality of telephone calls independently from each other via a cable. That process, however, leads to a significant reduction of the acoustic quality if 10 to 15 programs are transmitted.
The object of the invention is to provide a process and a device for generating an entertainment audio signal interrupted by advertising audio signals which allow broadcasting of different shop radio programs of the desired acoustic quality by means of a carrier frequency. With that, it should be possible to suppress broadcasting of different advertising programs, whereas it should not be possible to switch off broadcasting of preferable advertising programs.
The object is attained by an inventive process wherein a control signal is generated from advertising audio signals of shorter period and pilot signals which precede or follow the advertising audio signals, wherein the control signal and preferably the continuous entertainment audio signals are modulated to a high-frequency carrier signal, possibly w
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Kinkead Arnold
Pascal Robert J.
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