CATV terminal device in two-way communication CATV system
First Claim
1. In a two-way communication CATV system havinga CATV broadcasting station for transmitting a CATV broadcasting signal including frequency-division-multiplexed broadcasting signals corresponding to a plurality of channels;
- a plurality of CATV terminal devices respectively assigned different particular frequencies for transmitting channel request signals for requesting channels desired out of said plurality of channels; and
a relay device for receiving the CATV broadcasting signal transmitted from said CATV broadcasting station as well as receiving the channel request signals transmitted from said CATV terminal devices, frequency-converting the broadcasting signal corresponding to the channel requested by the channel request signal transmitted from each of said CATV terminal devices out of the broadcasting signals corresponding to the plurality of channels included in said CATV broadcasting signal into a broadcasting signal having the particular frequency assigned to the corresponding CATV terminal device and transmitting the broadcasting signal to the corresponding CATV terminal device, each of the plurality of CATV terminal devices in the two-way communication CATV system comprising;
storing means for storing a recognition number;
frequency determining means for determining the frequency of the broadcasting signal transmitted from said relay device; and
recognition number setting means for determining the recognition number depending on the frequency determined by said frequency determining means and storing the determined recognition number in said storing means.
1 Assignment
0 Petitions
Accused Products
Abstract
A two-way communication CATV system has a CATV broadcasting station, a relay device, and a plurality of CATV terminal devices. The CATV terminal device in the two-way communication CATV system includes a storing device for storing a recognition number, a frequency determining device for determining the frequency of a broadcasting signal transmitted from the relay device, and a recognition number setting device for determining a recognition number depending on the frequency determined by the frequency determining device and storing the determined recognition number in the storing device.
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Citations
19 Claims
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1. In a two-way communication CATV system having
a CATV broadcasting station for transmitting a CATV broadcasting signal including frequency-division-multiplexed broadcasting signals corresponding to a plurality of channels; -
a plurality of CATV terminal devices respectively assigned different particular frequencies for transmitting channel request signals for requesting channels desired out of said plurality of channels; and a relay device for receiving the CATV broadcasting signal transmitted from said CATV broadcasting station as well as receiving the channel request signals transmitted from said CATV terminal devices, frequency-converting the broadcasting signal corresponding to the channel requested by the channel request signal transmitted from each of said CATV terminal devices out of the broadcasting signals corresponding to the plurality of channels included in said CATV broadcasting signal into a broadcasting signal having the particular frequency assigned to the corresponding CATV terminal device and transmitting the broadcasting signal to the corresponding CATV terminal device, each of the plurality of CATV terminal devices in the two-way communication CATV system comprising; storing means for storing a recognition number; frequency determining means for determining the frequency of the broadcasting signal transmitted from said relay device; and recognition number setting means for determining the recognition number depending on the frequency determined by said frequency determining means and storing the determined recognition number in said storing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In a two-way communication CATV system comprising a communication control station and a plurality of CATV terminal devices connected to said communication control station, different recognition numbers being respectively set in said CATV terminal devices, a method of automatically setting recognition numbers assigned to CATV terminal devices in the two-way communication CATV system comprising the steps of:
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automatically setting a temporary recognition number different from a normal recognition number in a newly subscribed CATV terminal device, transmitting an inquiry message from said communication control station for inquiring of said newly subscribed CATV terminal device whether or not receiving is possible using said temporary recognition number, transmitting a response message from said newly subscribed CATV terminal device indicating that receiving is possible to said communication control station when said newly subscribed CATV terminal device receives said inquiry message from said communication control station, transmitting the normal recognition number to said newly subscribed CATV terminal device from said communication control station when said communication control station receives said response message indicating that receiving is possible from said newly subscribed CATV terminal device, and setting by said newly subscribed CATV terminal device, when said newly subscribed CATV terminal device receives said normal recognition number from said communication control station, the received normal recognition number as a recognition number assigned to the CATV terminal device. - View Dependent Claims (10, 11, 12, 13)
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14. In a two-way communication CATV system comprising a communication control station and a plurality of CATV terminal devices connected to said communication control station, different recognition numbers being respectively set in said CATV terminal devices, a device for automatically setting recognition numbers assigned to CATV terminal devices in the two-way communication CATV system comprising:
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means provided for a newly subscribed CATV terminal device for automatically setting a temporary recognition number different from a normal recognition number in said newly subscribed CATV terminal device; means provided for said communication control station for transmitting an inquiry message for inquiring of said newly subscribed CATV terminal device whether or not receiving is possible using said temporary recognition number; means provided for said newly subscribed CATV terminal device for transmitting a response message indicating that receiving is possible to said communication control station when said newly subscribed CATV terminal device receives said inquiry message from said communication control station; means provided for said communication control station for transmitting the normal recognition number to said newly subscribed CATV terminal device when said communication control station receives said response message indicating that receiving is possible from said newly subscribed CATV terminal device; and means provided for said newly subscribed CATV terminal device for setting, when said newly subscribed CATV terminal device receives said normal recognition number from said communication control station, said received normal recognition number as a recognition number assigned to the CATV terminal device. - View Dependent Claims (15, 16, 17)
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18. In a two-way communication CATV system comprising a CATV broadcasting station and a CATV terminal device, in which when a chargeable broadcasting program provided from said CATV broadcasting station is received by said CATV terminal device, said chargeable broadcasting program can be continuously viewed in a normal state only when a predetermined authentication signal is transmitted from said CATV terminal device to said CATV broadcasting station within a predetermined time period, the CATV terminal device in the two-way communication CATV system comprising:
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setting means for setting receiving time and a channel to be received at the receiving time; receiving channel switching means for switching a receiving channel to the channel set in said setting means when the time set by said setting means has arrived; determining means for determining whether a received program on the channel to which the receiving channel is switched by said receiving channel switching means is a chargeable broadcasting program or a non-chargeable broadcasting program on the basis of control data transmitted from said CATV broadcasting station; and means for transmitting said predetermined authentication signal to said CATV broadcasting station within said predetermined time period when said determining means determines that said received program is the chargeable broadcasting program.
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19. In a two-way communication CATV system comprising a CATV broadcasting station and a CATV terminal device, in which said CATV terminal device inquires of said CATV broadcasting station a genre of each of a plurality of programs provided by said CATV broadcasting station, so that a response indicating the inquired genre of the program is sent to said CATV terminal device from said CATV broadcasting station, the CATV terminal device in the two-way communication CATV system comprising:
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input means for inputting one genre which a viewer desires to view out of a plurality of genres; retrieving means for inquiring of said CATV broadcasting station the genre of each of the programs provided by said CATV broadcasting station when the one genre which the viewer desires to view is input by said input means to retrieve the program corresponding to the one genre input by said input means out of the programs provided by said CATV broadcasting station; and scanning means for switching a receiving channel so that the programs retrieved by said retrieving means are sequentially received for each predetermined time period.
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Specification