Method and system of interactive access to radio broadcast infor

Details Method and system of interactive access to radio broadcast infor Method and system of interactive access to radio broadcast infor

1994-02-17

1995-10-10

Chan, Wing F.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379101, 379102, 379105, 455 63, H04M 1100

Patent

active

054577390

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a method and a system of deferred access to information elements broadcast from a set of radio broadcasting sources.
The problem that the present Applicant has sought to resolve has never been raised hitherto: this is the problem of providing subscribers with deferred access information elements broadcast by radio transmission sources, whether these subscribers are in the zone of RF coverage or outside it, the access being obtained by means of the telephone network with the subscribers staying hooked up to the network and having interactive access.
Indeed, there are no means, to date, of enabling deferred access to information elements broadcast by one or more radio broadcasting stations at any time whatsoever after these information elements have been broadcast or just a few instants thereafter. It is this problem that the Applicant has tried to resolve and that the Applicant has resolved by the method that shall be described in detail hereinafter and by the device for the implementation of the method.
According to the invention, subscribers wishing to listen to an item of information that is broadcast by a broadcasting source can do so without possessing any special equipment other than a telephone or an equivalent device, in remaining hooked up to the network and and selecting any time of their choice.
An object of the present invention more particularly is, first of all, a method of deferred access to radio information elements broadcast by one or more radio broadcasting sources chiefly characterized in that it comprises the following steps:
A) receiving and digitizing the information elements broadcast by the sources and cyclically recording the information elements continuously with temporal reference markers corresponding to broadcasting time slots; central processing unit so as to determine the time slot of the recording in which any broadcast information element is located;
B) gaining access to any recorded information element by the entering or keying in, from a telecommunications terminal, of a telephone number assigned to the central processing unit, by giving the source and time of the broadcast or a corresponding code of the information to be retrieved by means of the available terminal, and receiving this information element instantaneously on the telephone during the call itself.
An object of present information is also a system of deferred access to radio information elements broadcast by one or more broadcasting sources, chiefly characterized in that it comprises:
A) A center for the reception of broadcast information elements, for recording and for management of access in read/write mode, that is accessible by the switched telephone network, comprising: broadcasting frequencies corresponding to each broadcasting source, real-time digitization of the information elements received by the receivers and of recording them cyclically and continuously with temporal reference markers corresponding to broadcasting time slots; element, already broadcast, is located; the telephone, of the information elements requested,
B) Subscribers' equipment comprising telecommunications terminals that can be used for the interactive interrogation of the recording center and for the reception, on the telephone during the call itself, of the desired information elements through the switched telephone network.
The center may receive the information elements broadcast by the RF sources directly by means of RF waves. Naturally, should a source be located outside the reception perimeter of the center, a receiver is placed in the field of radiation of the source and is connected to the center by appropriate transmission means.
Other particular features and advantages of the invention shall appear from the description, which is given by way of an illustration but in no way restricts the scope of the invention, with reference to the drawings wherein:
FIG. 1 gives a schematic view of a system of access according to the invention;
FIG. 2 shows a more detailed diagram of the system as shown in FIG

REFERENCES:
patent: 4789863 (1988-12-01), Bush
patent: 4812843 (1989-03-01), Champion, III et al.
patent: 4899369 (1990-02-01), Kondziela
patent: 4942616 (1990-07-01), Linstroth et al.
patent: 5132992 (1992-07-01), Yurt et al.

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