KR0173898B1 - Bidirectional cordless video on demand service system - Google Patents

Abstract

The present invention relates to a VOD system, in which the subscriber directly selects and requests various programs and signals, and the provider provides a two-way VOD system using a radio that provides various program transmission and signals required by the subscriber. Video signals and control signals are sent to the VOD base station using dozens of gigahertz frequencies, where the video signals are sent to subscribers using the tens of gigahertz bands, and control signals are sent to TRS, bidirectional paging, CDPD, CDMA, Or transmit to the subscriber via the PCS base station.

On the other hand, the video desired by the user is transmitted using several tens of gigahertz frequencies, and control signals such as user operation information, user information, and billing information can be implemented with TRS, bidirectional paging, CDPD, CDMA, or PCS services. The frequency band is transmitted to the VOD central control station, and the control signal of the VOD central control station is transmitted to the subscriber using TRS, bidirectional paging, CDPD, CDMA, or PCS communication.

Therefore, the present invention can provide a service at a lower cost than wired telephone fees without using expensive equipment and frequency resources of several tens of kilohertz bands, and does not interfere with communication using a telephone line while watching a program because it does not use a telephone line. Does not work.

Description

Two-way wireless on-demand video service (VOD: Video On Demand) system

1 is a block diagram of a conventional two-way wireless VOD system.

2 is a block diagram of a two-way wireless VOD system for transmitting a control signal using a telephone line.

3 is an example of a two-way wireless VOD system using the TRS communication method according to the present invention for the transmission of various control signals.

4 is a detailed configuration diagram of a VOD central control station of a two-way wireless VOD system using a TRS communication method according to the present invention for transmitting various control signals.

5 is a detailed configuration diagram of a VOD base station of a two-way wireless VOD system using the TRS communication method according to the present invention for transmitting various control signals.

6 is a detailed configuration diagram of a TRS base station of a two-way wireless VOD system using the TRS communication method according to the present invention for transmitting various control signals.

7 is another exemplary diagram of a two-way wireless VOD system using the TRS communication method according to the present invention for transmitting various control signals.

8 is another exemplary diagram of a VOD central control station of a two-way wireless VOD system using the TRS communication method according to the present invention for transmitting various control signals.

9 is another exemplary diagram of a VOD base station of a two-way wireless VOD system using the TRS communication method according to the present invention for transmitting various control signals.

10 is another exemplary diagram of a TRS base station of a two-way wireless VOD system using the TRS communication method according to the present invention for transmitting various control signals.

11 is a block diagram of a bidirectional wireless VOD system using the bidirectional paging communication method according to the present invention for transmitting various control signals.

12 is a detailed configuration diagram of a VOD central control station of a two-way wireless VOD system using the two-way paging communication method according to the present invention for transmitting various control signals.

13 is a detailed configuration diagram of a VOD base station of a two-way wireless VOD system using the two-way paging communication method according to the present invention for transmitting various control signals.

14 is a detailed configuration diagram of a bidirectional paging base station of a bidirectional wireless VOD system using the bidirectional paging communication method according to the present invention for transmitting various control signals.

15 is another exemplary diagram of a two-way wireless VOD system using a two-way paging communication method according to the present invention for transmitting various control signals.

16 is another exemplary diagram of a VOD central control station of a two-way wireless VOD system using the two-way paging communication method according to the present invention for transmitting various control signals.

17 is another exemplary diagram of a VOD base station of a two-way wireless VOD system using the two-way paging communication method according to the present invention for transmission of various control signals.

18 is another exemplary diagram of a bidirectional paging base station of a bidirectional wireless VOD system using the bidirectional paging communication method according to the present invention for transmitting various control signals.

19 is an exemplary diagram of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication scheme according to the present invention for transmission of various control signals.

20 is an illustration of a VOD central control station of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication scheme according to the present invention for the transmission of various control signals.

21 is an exemplary diagram of a VOD base station of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication method according to the present invention for transmission of various control signals.

22 is an exemplary diagram of a CDPD, CDMA, or PCS base station of a bidirectional wireless VOD system using the CDPD, CDMA, or PCS communication scheme according to the present invention for transmission of various control signals.

Figure 23 is another illustration of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication scheme according to the present invention for the transmission of various control signals.

24 is another exemplary diagram of a VOD central control station of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication scheme according to the present invention for transmission of various control signals.

25 is another exemplary diagram of a VOD base station of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication scheme according to the present invention for transmission of various control signals.

FIG. 26 is another exemplary diagram of a CDPD, CDMA, or PCS base station of a bidirectional wireless VOD system using the CDPD, CDMA, or PCS communication scheme according to the present invention for transmitting various control signals. FIG.

* Explanation of symbols for main parts of the drawings

11, 21, 31, 71, 111, 151, 191, 231: VOD central control station

12, 22, 32, 72, 112, 152, 192, 232: VOD base station

13, 24, 34, 74, 114, 154, 194, 234: subscriber device

23: general public network 33, 73: TRS base station

113,153: Bidirectional Paging Base Station

193, 233: CDPD, CDMA, or PCS Base Station

The present invention relates to a two-way VOD system using a radio that a subscriber directly selects and requests various programs and signals and a provider provides various program transmissions and signals required by the subscriber.

1 is a configuration diagram of a conventional two-way wireless VOD system, where 11 is a VOD central control station, 12 is a VOD base station, and 13 is a subscriber device.

The conventional two-way wireless VOD system processes a subscriber's control command with a subscriber signal, sends a program desired by the subscriber to the VOD base station 12, and charges the VOD central control station 11, and the VOD central control station 11 VOD base station 12, and VOD base station 12 for transmitting the program and the signal transmitted from the radio to the end subscriber using the tens of gigahertz band wirelessly, receives the subscriber's control signal to the VOD central control station 11, and Subscriber station 13 for receiving the program and the signal from the control unit and transmitting the control signal to the VOD base station 12. The bidirectional wireless VOD service method of this system is that all signals are wirelessly transmitted between the VOD central control station 11 and the VOD base station 12, the VOD base station 12, and the subscriber device 13.

In the conventional two-way wireless VOD system, expensive radio resources are wasted because the control signal of the subscriber occupies the same frequency bandwidth (20 MHz) as occupied by the program. There is a problem that the value of the subscriber device is increased.

2 is a conventional two-way wireless VOD system using telephone lines and radio signals, where 21 is a VOD central control station, 22 is a VOD base station, 23 is a public telecommunication network, and 24 is a subscriber device.

In the conventional two-way wireless VOD system using a telephone line and a radio signal, transmission to the VOD base station 22 and the subscriber device 24 transmits a program using ultra high frequency in the tens of GHz band and uses a telephone line from the subscriber device 24. Radio waves from the VOD base station 22 and the VOD base station 22 which transmits the program to the subscriber using the ultra high frequency of the tens of GHz band to the VOD central control station 14 and the subscriber device 24 which receive and process the control signal. Is a system for receiving and viewing the signal and transmitting the desired control signal to the VOD central control station 21 using the general public telecommunication network 23. This system can save expensive radio resources, but because the user has to connect to the public network 23 every time he watches the program, the control signal of the subscriber is controlled by the VOD central control due to the line connection time caused by the characteristics of the public network 23. The time to be transmitted to the station 23 becomes long, and whenever control is made, the circuit must be set up or the circuit must be kept occupied for the period of providing the VOD.

Therefore, the above-described prior art is burdened with excessive telephone charges, and the subscriber must have a telephone and the subscriber's control signal or the control signal of the VOD central control station is transmitted through the telephone line. There was a problem that can occur.

In order to solve the above problems, a first object of the present invention is to transmit a video desired by a user using several tens of gigahertz frequencies, and control signals such as user's operation information, user information, and billing information. The present invention provides a wireless two-way VOD system that transmits to a VOD central control station using a frequency band capable of implementing TRS service, and transmits control signals of the VOD central control station to a subscriber using a TRS communication method.

In order to solve the above problems, a second object of the present invention is to send a video signal and a control signal to a VOD base station using a frequency of several tens of gigahertz bands at a VOD central control station, and the video signal is transmitted to a subscriber at a VOD base station. It is to provide a wireless two-way VOD system that transmits using the band of the Gigahealth band and the control signal is transmitted to the subscriber through the TRS base station.

In order to solve the above problems, the third object of the present invention is to send a video signal and a control signal to a VOD base station using a frequency of several tens of gigahertz bands at a VOD central control station. It is to provide a wireless two-way VOD system that transmits using the band of the Gigahealth band and the control signal is transmitted to the subscriber through the bi-directional paging base station.

In order to solve the above problems, a fourth object of the present invention is to transmit a video desired by a user using frequencies of several tens of gigahertz bands, and control signals such as user operation information, user information, and billing information are bidirectional paging services. The present invention provides a wireless bidirectional VOD system that transmits to a VOD central control station using a frequency band that can be implemented, and a control signal of the VOD central control station is transmitted to a subscriber using a bidirectional paging base station.

In order to solve the above problems, a fifth object of the present invention is to send a video signal and a control signal to a VOD base station using a frequency of several tens of gigahertz bands at a VOD central control station, and the video signal is transmitted to a subscriber at a VOD base station. It is to provide a wireless two-way VOD system that transmits using the band of the Gigahealth band and the control signal to the subscriber via the CDPD, CDMA, or PCS base station.

In order to solve the above problems, the sixth object of the present invention is to transmit a video desired by a user using several tens of gigahertz frequencies and control signals such as user operation information, user information, and billing information. A wireless bidirectional VOD system that transmits to the VOD central control station using a frequency band capable of implementing CDPD, CDMA, or PCS service, and transmits control signals of the VOD central control station to subscribers using a CDPD, CDMA, or PCS communication method. To provide.

In accordance with one aspect of the present invention, there is provided a video on demand system (VOD: Video On Demand) system having a VOD central control station, a VOD base station, and a subscriber device. A VOD central control station for transmitting a video signal to the VOD base station using microwaves according to one control signal and for transmitting a control signal using TRS communication; A VOD base station receiving a video signal from the VOD central control station and transmitting the signal to the subscriber device using microwave; A TRS base station receiving a control signal from the subscriber device and transmitting the control signal to the VOD central control station using TRS communication, and receiving a control signal from the VOD central control station and transmitting the control signal to the subscriber device using TRS communication; And a subscriber device which transmits a control signal to the TRS base station using TRS communication, receives a control signal from the TRS base station, and receives a video signal from the VOD base station.

According to an aspect of the present invention, there is provided a video-on-demand video service (VOD) system including a VOD central control station, a VOD base station, and a subscriber device, according to a control signal received from the VOD base station. A VOD central control station for transmitting a video signal and a control signal to the VOD base station; A VOD base station receiving a video signal from the VOD central control station and transmitting the video signal to the subscriber device, receiving and transmitting a control signal from the VOD central control station, and receiving a control signal and transmitting the control signal to the VOD central control station; A Trunked Radio Service (TRS) base station receiving a control signal from the subscriber device and transmitting the control signal to the VOD base station, and receiving a control signal from the VOD base station and transmitting the control signal to the subscriber device; And a subscriber device for transmitting a control signal to the TRS base station, receiving a control signal from the TRS base station, and receiving a video signal from the VOD base station.

According to an aspect of the present invention, there is provided a VOD central control station, a VOD base station, and a subscriber device, wherein a video signal (VOD) system is provided according to a control signal received from the VOD base station. A VOD central control station for transmitting video and control signals to the VOD base station using microwaves; Receives a video signal from the VOD central control station and transmits it to the subscriber device using microwave, receives a control signal from the VOD central control station and transmits it using bidirectional paging communication, and receives a control signal to receive the VOD. A VOD base station transmitting microwaves to the central control station; A bidirectional paging base station which receives a control signal from the subscriber device and transmits it to the VOD base station using bidirectional paging communication, and receives a control signal from the VOD base station and transmits it to the subscriber device using bidirectional paging communication; And a subscriber device for transmitting a control signal to the TRS base station using bidirectional paging communication, receiving a control signal from the TRS base station, and receiving a video signal from the VOD base station.

According to an aspect of the present invention, there is provided a control signal received by using two-way paging communication in a two-way wireless order-adaptive video service (VOD) system having a VOD central control station, a VOD base station, and a subscriber device. A VOD central control station for transmitting a video signal to the VOD base station using microwaves and for transmitting a control signal using bidirectional paging communication; A VOD base station receiving a video signal from the VOD central control station and transmitting the signal to the subscriber device using microwave; A bidirectional paging base station that receives a control signal from the subscriber device and sends it to the VOD central control station using bidirectional paging communication, and receives a control signal from the VOD central control station and sends it to the subscriber device using bidirectional paging communication. ; And a subscriber device for transmitting a control signal to the bidirectional paging base station using bidirectional paging communication, receiving a control signal from the bidirectional paging base station, and receiving a video signal from the VOD base station.

An embodiment of the present invention for achieving the fifth object is a two-way wireless on-demand video service (VOD) system having a VOD central control station, a VOD base station, and a subscriber device, which is received from the VOD base station. A VOD central control station which transmits a video signal and a control signal to the VOD base station using microwaves according to a control signal; Receives a video signal from the VOD central control station and transmits it to the subscriber device using microwave, transmits a control signal received from the VOD central control station using CDMA (Code Division Multiple Access) communication, and a control signal A VOD base station for receiving and transmitting the microwaves to the VOD central control station by using a microwave; A CDMA base station for receiving a control signal from the subscriber device and transmitting the control signal to the VOD base station using CDMA communication, and for receiving a control signal from the VOD base station and transmitting the control signal to the subscriber device using CDMA communication; And a subscriber device for transmitting a control signal to the CDMA base station using CDMA communication, receiving a control signal from the CDMA base station, and receiving a video signal from the VOD base station.

Another embodiment of the present invention for achieving the fifth object is a two-way wireless on-demand video service (VOD) system having a VOD central control station, a VOD base station, and a subscriber device, A VOD central control station which transmits a video signal and a control signal to the VOD base station using microwaves according to a control signal; Receives a video signal from the VOD central control station and transmits it to the subscriber device using microwave, transmits a control signal received from the VOD central control station using PCS (Personal Communications Service) communication, and transmits a control signal. A VOD base station receiving and transmitting the microwaves to the VOD central control station using microwaves; A VOD base station that receives a control signal from the subscriber device and transmits it to the VOD base station using PCS communication, and receives a control signal from the VOD base station and sends the control signal to the subscriber device using PCS communication; And a subscriber device for transmitting a control signal to the PCS base station using PCS communication, receiving a control signal from the PCS base station, and receiving a video signal from the VOD base station.

Another embodiment of the present invention for achieving the fifth object is a two-way wireless on-demand video service (VOD) system having a VOD central control station, a VOD base station, and a subscriber device, which is received from the VOD base station. A VOD central control station for transmitting a video signal and a control signal to the VOD base station using microwaves according to a control signal; Receives a video signal from the VOD central control station and transmits it to the subscriber device using microwave, transmits a control signal received from the VOD central control station using CDPD communication, and receives a control signal to receive the VOD center. A VOD base station transmitting to the control station using microwaves; A CDPD base station for receiving a control signal from the subscriber device and transmitting the control signal to the VOD base station using CDPD communication, and receiving a control signal from the VOD base station and transmitting the control signal to the subscriber device using CDPD communication; And a subscriber device for transmitting a control signal to the CDPD base station using CDPD communication, receiving a control signal from the CDPD base station, and receiving a video signal from the VOD base station.

An embodiment of the present invention for achieving the sixth object is, in a two-way wireless on-demand video service (VOD) system having a VOD central control station, a VOD base station, and a subscriber device, using CDMA communication A VOD central control station for transmitting a video signal to the VOD base station using microwaves according to a control signal and for transmitting the control signal using CDMA communication; A VOD base station receiving a video signal from the VOD central control station and transmitting the signal to the subscriber device using microwave; A CDMA base station that receives a control signal from the subscriber device and sends the control signal to the VOD central control station using CDMA communication, and receives a control signal from the VOD central control station and sends the control signal to the subscriber device using CDMA communication; And a subscriber device which transmits a control signal to the CDMA base station using CDMA communication, receives a control signal from the CDMA base station, and receives a video signal from the VOD base station.

Another embodiment of the present invention for achieving the sixth object is a two-way wireless on-demand video service (VOD) system having a VOD central control station, a VOD base station, and a subscriber device, using PCS communication A VOD central control station for transmitting a video signal to the VOD base station using microwaves according to a control signal and for transmitting a control signal using PCS communication; A VOD base station receiving a video signal from the VOD central control station and transmitting the signal to the subscriber device using microwave; A PCS base station that receives a control signal from the subscriber device and sends the control signal to the VOD central control station using PCS communication, and receives the control signal from the VOD central control station and sends the control signal to the subscriber device using PCS communication; And a subscriber device for transmitting a control signal to the PCS base station using PCS communication, receiving a control signal from the PCS base station, and receiving a video signal from the VOD base station.

Another embodiment of the present invention for achieving the sixth object is to provide a two-way wireless on-demand video service (VOD) system having a VOD central control station, a VOD base station, and a subscriber device, using CDPD communication. A VOD central control station which transmits a video signal to the VOD base station using microwaves according to the received control signal and transmits a control signal using CDPD communication; A VOD base station receiving a video signal from the VOD central control station and transmitting the signal to the subscriber device using microwave; A CDPD base station for receiving a control signal from the subscriber device and transmitting the control signal to the VOD central control station using CDPD communication, and receiving a control signal from the VOD central control station and transmitting the control signal to the subscriber device using CDPD communication; And a subscriber device which transmits a control signal to the CDPD base station using CDPD communication, receives a control signal from the CDPD base station, and receives a video signal from the VOD base station.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is an example of a two-way wireless VOD system using the TRS communication method according to the present invention for transmitting various control signals, wherein 31 is a VOD central control station, 32 is a VOD base station, 33 is a TRS base station, and 34 is a subscriber device. Respectively.

The subscriber device 34 generates control signals for selecting various programs, transmits them to the TRS base station 33 in a TRS communication scheme, receives control signals from the TRS base station 33, and receives a video signal from the VOD base station 32. Receive and allow the subscriber to watch the program.

The TRS base station 33 receives various control signals from the subscriber device 34 and transmits them to the VOD central control station 31 in a TRS communication manner, and receives the control signals from the VOD central control station 31 to receive the control signals from the subscriber device ( 34) by TRS communication.

The VOD central control station 31 receives and processes various control signals from the subscriber device 34 through the TRS base station 33, and controls the transmission signals so that the video and audio signals are in the frequency band of several tens of kHz. 32) and the control signal is transmitted to the TRS base station 33 in a TRS communication method.

The VOD base station 32 transmits the video and audio signals received from the VOD central control station 31 to the subscriber device 34 in the tens of GHz band.

On the other hand, TRS communication system is an advantageous system for data transmission, the call connection time is hundreds of milliseconds (msec) considerably short, the frequency use efficiency of one to many multi-call, high efficiency, the present invention is such an advantage bidirectional wireless Used to transmit various control signals of VOD system.

4 is a detailed configuration diagram of a VOD central control station of a two-way wireless VOD system using the TRS communication method according to the present invention, wherein 41 is a TRS digital data receiver, 42 is a control signal decoding device, and 43 is a video. Server, 44 is an external video source control unit, 45 is a microwave transmission device, 46 is a signal generator for controlling subscribers, 47 is a hard disk drive (HDD) for storing subscriber information, 48 is a backup tape storage device, 49 Represent each TRS digital data transmitter.

The VOD central control station 31 receives the subscriber control signal transmitted from the TRS base station 33 via the TRS data receiver 41. The received control signal is analyzed by the control signal decoding device 42 and input to the video server 43, the subscriber information storage HDD 47, the subscriber control signal generator 46, and the external video source controller 44.

The external video source controller 44 selects and controls a program supplied by an information provider other than the video server 43 according to the control signal of the control signal decoding device 42. The video server 43 selects a program or performs a necessary control operation according to the control signal of the subscriber sent from the control signal decoding device 42. The result of the selected program or control operation is transmitted to the VOD base station 32 via the microwave transmission device 45.

The subscriber control signal generator 46 generates an appropriate control signal for controlling the subscriber in accordance with information input from the control signal decoding device 42 and the subscriber information storage HDD 47. The generated signal for subscriber control is transmitted to the TRS base station 33 via the TRS digital data transmitter 49. On the other hand, the subscriber information storage HDD 47 receives and stores subscriber information such as billing information from the control signal decoding device 42, and the backup tape storage device 48 at the time of failure of the subscriber information storage HDD 47. Save backup data to prevent loss of information.

The VOD base station 32 transmits the video signal transmitted from the microwave transmission device 45 of the VOD central control station 31 to the subscriber device 34 using microwaves in the tens of microsecond bands.

5 is a detailed configuration diagram of a VOD base station of a two-way wireless VOD system using the TRS communication method according to the present invention, in which 51 is a microwave receiving device, 52 is a down converter, and 53 is an amplifier. 54 denotes a demodulator, 55 denotes a received video signal quality analyzing apparatus, 56 denotes a microwave transmitting apparatus, and 57 denotes an up converter.

The microwave receiving device 51 of the VOD base station 32 directly receives a radio wave containing a video signal transmitted from the VOD central control station 31 and transmits it to a down converter 52. The down converter 52 converts a microwave having a frequency of several tens of kHz from the microwave receiver 51 into a frequency of several kHz to facilitate amplification in the amplifier 53.

The signal amplified by the amplifier 53 is input to the reception video signal quality analyzing apparatus 55 and its quality is evaluated. In addition, the signal amplified by the amplifier 53 is demodulated by the demodulator 54 and input to the received video signal quality analyzing apparatus 55, and the quality thereof is evaluated.

The video signal quality analyzing apparatus 55 and the demodulator 54 may be omitted because they are not essential equipment of the VOD base station 32.

The up converter 57 converts the signal passing through the amplifier 53 into a frequency of several tens of kHz band and broadcasts it to the subscriber device 34 via the microwave transmission device 56.

The TRS base station 33 transmits the subscriber control signal transmitted from the TRS digital data transmitter 49 of the VOD central control station 31 to the subscriber device 34 using the TRS communication scheme.

6 is a detailed configuration diagram of a TRS base station of a two-way wireless VOD system using the TRS communication method according to the present invention, wherein 61 is a TRS receiver, 62, 64 is an amplifier, 63 is a subscriber call processing device; 65 denotes a TRS transmitting apparatus, respectively.

The TRS base station 33 serves to relay the control signal transmitted from the VOD central control station 31 to the subscriber device 34 and the control signal transmitted from the subscriber to the VOD base station 32. The TRS receiving device 61 receives a control signal transmitted from the subscriber device 34 or the VOD central control station 31 and transmits it to the amplifier 62. The amplifier 62 amplifies the received signal and supplies it to the subscriber call processing apparatus 63. The signal passing through the subscriber call processing apparatus 63 is assigned to an appropriate channel, amplified by the amplifier 64, and transmitted to the subscriber apparatus 34 or the VOD central control station 31 through the TRS transmitting apparatus 65.

7 is another exemplary diagram of a two-way wireless VOD system using the TRS communication method according to the present invention, where 71 is a VOD central control station, 72 is a VOD base station, 73 is a TRS base station, and 74 is a subscriber device.

The VOD central control station 71 receives the control signal from the VOD base station 72 and transmits the video signal and the control signal to the VOD base station 72.

The VOD base station 72 transmits the video signal to the subscriber device 74 using the frequency band of the tens of kilohertz band to the subscriber and the control signal to the subscriber device 74 through the TRS base station 73 in a TRS communication manner. The VOD base station 72 also receives a control signal from the subscriber device 74 via the TRS base station 73 and transmits it to the VOD central control station 71.

8 is another exemplary diagram of a VOD central control station of a two-way wireless VOD system using the TRS communication method according to the present invention, where 81 is a microwave receiving device, 82 is a control signal decoding device, and 83 is an external device. The video source control unit, 84 is a video server, 85 is a multiplexing device, 86 is a subscriber control signal generator, 87 is a microwave transmission device, 88 is a subscriber information storage HDD, and 89 is a backup tape storage device.

The VOD central control station 71 receives the control signal transmitted from the VOD base station 72 through the microwave receiving device 81.

The control signal decoding device 82 decodes the control signal received from the microwave reception device 81 to control the external video source control unit 83 or the video server 84, and transmits control data to the subscriber information storage HDD 88. ) And a signal generator 86 for subscriber control.

The external video source controller 83 selects a program supplied by an information provider other than the video server 84 according to the control signal of the control signal decoding device 82 or performs a control operation. The video server 84 selects a program or performs a necessary control operation according to the control signal of the subscriber sent from the control signal decoding device 82.

The subscriber control signal generator 86 generates a subscriber control signal by using the control data from the control signal decryption device 82 and the information stored in the subscriber information storage HDD 88.

The signals input from the external video source control unit 83, the video server 84, and the subscriber control signal generator 86 are multiplexed in the multiplexing unit 85, and are then multiplexed by the VOD base station through the microwave transmitting unit 87. Is sent to 72. On the other hand, the subscriber information storage HDD 88 receives and stores subscriber information such as billing information from the control signal decoding device 82, and the backup tape storage device 89 at the time of failure of the subscriber information storage HDD 88. Save backup data to prevent information loss.

9 is another exemplary view of a VOD base station of a two-way wireless VOD system using the TRS communication method according to the present invention, 91 is a microwave receiving device, 92 is a down converter, 93, 101 is an amplifier, 94 Denotes a demodulator, 95 denotes a TRS transmission device, 96 denotes a signal separation device, 97 denotes a received video signal quality analysis device, 98 and 103 denotes a microwave transmission device, 99 denotes an up converter, and 100 denotes a TRS receiving device.

The microwave receiving apparatus 91 of the VOD base station 72 directly receives a radio wave containing a video signal and a control signal transmitted from the VOD central control station 71 and transmits it to a down converter 92. The down converter 92 converts a microwave having a frequency of several tens of kHz into a frequency of several kHz and transmits it to the signal separation device 96.

The signal separation device 96 separates a signal received from the down converter 92 into a video signal and a control signal, and transmits a control signal to the TRS transmitter 95 and a video signal to an amplifier 93. do. The signal amplified by the amplifier 93 is evaluated for its quality in the reception video signal quality analyzing apparatus 97. Further, the signal amplified by the amplifier 93 is demodulated by the demodulator 94 and then input to the received video signal quality analyzing apparatus 97 to evaluate its quality. The demodulator 94 and video signal quality analysis device 97 may be omitted because they are not essential equipment of the VOD base station 72.

The signal passing through the amplifier 93 is converted to a frequency of several tens of kHz band in the up converter 99 and broadcasted to the subscriber device 74 via the microwave transmission device 98. Meanwhile, the TRS transmitter 95 receives a control signal from the signal separator 96 and transmits the control signal to the TRS base station 73 in a TRS communication scheme.

The TRS receiving apparatus 100 receives a control signal from the TRS base station 73, and the amplifier 101 amplifies the control signal from the TRS receiving apparatus 100 and transmits it to the up converter 102. The up converter 102 converts a frequency of several GHz into microwaves of several tens of kHz and transmits it to the VOD central control station 71 through the microwave transmission device 103.

10 is another exemplary diagram of a TRS base station of a two-way wireless VOD system using the TRS communication method according to the present invention, where 104 is a TRS receiver, 105 is a amplifier, and 106 is a subscriber call processing device; 108 denotes a TRS transmitting apparatus, respectively.

The TRS base station 73 relays the control signal transmitted from the VOD base station 72 to the subscriber device 74 and the control signal transmitted to the subscriber to the VOD base station 72. The TRS receiving device 104 receives a control signal transmitted from the subscriber device 74 or the VOD base station 72. The amplifier 105 amplifies the signal and supplies the received signal to the subscriber call processing apparatus 106. The signal passing through the subscriber call processing device 106 is assigned to an appropriate channel, amplified by the amplifier 107 and transmitted to the subscriber device 74 or the VOD base station 72 through the TRS transmitting device 108.

11 is a configuration diagram of a two-way wireless VOD system using the two-way paging communication method according to the present invention for transmitting various control signals, 111 is a VOD central control station, 112 is a VOD base station, 113 is a two-way paging base station, 114 represents each subscriber device.

The VOD central control station 111 receives the control signal from the VOD base station 112 and transmits the video signal and the control signal to the VOD base station 112.

The VOD base station 112 transmits the video signal to the subscriber device 114 using the frequency band of the tens of kilohertz band to the subscriber and the control signal is transmitted to the subscriber device 114 through the bidirectional paging base station 113 in a bidirectional paging communication scheme. do. The VOD base station 112 also receives a control signal from the subscriber station 114 via the bidirectional paging base station 113 and transmits it to the VOD central control station 111 using a frequency of several tens of kilohertz.

12 is a detailed configuration diagram of a VOD central control station of a two-way wireless VOD system using the two-way paging communication method according to the present invention, 121 is a microwave receiving device, 122 is a control signal decoding device, 123 is a The video server, 124 denotes an external video source controller, 125 denotes a multiplexing device, 126 denotes a subscriber control signal generator, 127 denotes a microwave transmission device, 128 denotes a subscriber information storage HDD, and 129 denotes a backup tape storage device.

The VOD central control station 111 receives the subscriber control signal transmitted from the VOD base station 112 through the microwave receiving device 121. The received subscriber control signal is analyzed by the control signal decoding apparatus 122 and input to the video server 123, the subscriber information storage HDD 128, the subscriber control signal generator 126, and the external video source controller 124.

The external video source controller 124 selects and controls a program provided by an information provider other than the video server 123 according to the control signal of the subscriber. The video server 123 selects a program or performs a necessary control operation according to the subscriber information of the subscriber information storage HDD 128 and the data sent from the control signal decoding apparatus 122.

Meanwhile, the subscriber information storage HDD 128 receives and stores subscriber information such as a charging signal from the control signal decoding device 122, and the backup tape storage device 129 provides information when a failure of the subscriber information storage HDD 128 occurs. Save backup data to prevent loss.

The signals input from the external video source control unit 124, the video server 123, and the subscriber control signal generator 126 are multiplexed in the multiplexer 125, and the VOD base station is transmitted through the microwave transmitter 127. Is sent to 112.

The subscriber control signal generator 126 generates an appropriate control signal for controlling the subscriber in accordance with information input from the control signal decryption device 122 and the subscriber information storage HDD 128. The generated signal for subscriber control is multiplexed in the multiplexing apparatus 125 and transmitted to the VOD base station 112 through the microwave transmitting apparatus 127.

The VOD base station 112 transmits the video signal transmitted from the microwave transmission device 127 of the VOD central control station 111 to the subscriber device 114 using the microwave in the tens of microseconds band. Meanwhile, the control signal transmitted from the VOD central control station 111 controls the subscriber station 114 through the bidirectional paging base station 113 in the VOD base station 112.

13 is a detailed configuration diagram of a VOD base station of a two-way wireless VOD system using the two-way paging communication method according to the present invention, 1301 is a microwave receiving device, 1302 is a down converter, 1303 is a signal separation device, 1304 is an amplifier, 1305, 1314 is a demodulator, 1306 is an incoming video signal quality analyzer, 1307 is a frequency mixer, 1308, 1318 is an up converter, 1309 is a microwave transmitter, 1310 is a control signal processor, 1311, 1317 is a modulator 1313 denotes a bidirectional paging transmission device, 1313 denotes a bidirectional paging receiving device, 1315 denotes a text information processing device, and 1316 denotes a text information display device.

The microwave reception device 1301 of the VOD base station 112 directly receives a radio wave containing a video signal and a control signal transmitted from the VOD central control station 111 and transmits the radio wave to the down converter 1302. The down converter 1302 converts a microwave having a frequency of several tens of kHz into a frequency of several kHz and transmits it to the signal separation device 1303.

The signal separation device 1303 separates the signal received from the down converter 1302 into a video signal and a control signal, and transmits the control signal to the control signal processing device 1310 and the video signal to the amplifier 1304. send. The signal amplified by the amplifier 1304 is evaluated by the receiving video signal quality analyzer 36 for its quality. In addition, the signal that has passed through the amplifier 1304 is demodulated by the demodulator 1305 and input to the received video signal quality analyzing apparatus 1306, and the quality thereof is evaluated.

The video signal quality analyzing apparatus 1306 and the demodulator 1305 may be omitted because they are not essential equipment of the VOD base station 112.

The signal amplified by the amplifier 1304 is mixed in a frequency mixer 1307 and then converted into a frequency of several tens of kilohertz bands by an up converter 1308, and then through a microwave transmitting device 1309. Broadcasted on 114.

The control signal separated by the signal separation device 1304 is processed by the control signal processing device 1310 and then modulated by the modulator 1311 and transmitted to the bidirectional paging base station 113 via the bidirectional paging transmission device 1312.

The control signal received by the bidirectional paging receiving device 1313 of the VOD base station 112 is demodulated by the demodulator 1314 and passed through the text information processing device 1315 to be displayed on the text information display device 1316. In addition, the output of the character information processing device 1315 is modulated by the modulator 1317, and then converted into a few kHz frequency by several tens of frequencies in the up-converter 1318 and input to the frequency mixer 1307. Then, in the up converter 1308, the frequency is converted into several tens of frequencies and transmitted to the VOD central control station 11 through the microwave transmission device 1309.

14 is a detailed configuration diagram of a bidirectional paging base station of a bidirectional wireless VOD system using the bidirectional paging communication method according to the present invention, 141 is a bidirectional paging receiver, 142 is an electric field strength measuring device, and 143 is a bidirectional A paging transmitter, 144 denotes a base station controller, 145 denotes a packet data processing apparatus, 146 denotes a synchronization signal generator, 147 denotes a modulator, and 148 denotes a bidirectional paging central control station.

The bidirectional paging receiving device 141 receives a control signal from the VOD base station 112 or the subscriber device 114 and transmits the control signal to the electric field strength measuring device 142, the base station control device 144, and the packet data processing device 145. do. The electric field strength measuring device 142 estimates the magnitude of the received control signal and transmits information about the magnitude to the base station control device 144 and the external bidirectional paging central control station 148.

The bidirectional paging central control station 148 synthesizes the information from the various base stations, finds the location area where the control signal is transmitted, and transmits the necessary control signals and data to the base stations in the area.

The base station controller 144 receives the outputs of the bidirectional paging receiving device 141 and the electric field strength measuring device 142, receives the output of the bidirectional paging central control station 148, analyzes the output of the bidirectional paging receiving device 142, and the synchronization signal generator 146. The bidirectional paging transmission device 143 is controlled.

The packet data processing device 145 processes the packet data passed through the bidirectional paging receiving device 141 and reassembles it into a new data packet suitable for transmission. The reassembled packet is modulated by the modulator 147 and transmitted to the VOD base station 112 or subscriber device 114 via the bidirectional paging transmission device 143. The simultaneous signal generator 146 receives the outputs of the base station control device 144 and the packet data processing device 145, generates a synchronization signal necessary for receiving data, and transmits it to the modulator 147.

15 is another exemplary diagram of a two-way wireless VOD system using a two-way paging communication method according to the present invention for transmitting various control signals, where 151 is a VOD central control station, 152 is a VOD base station, and 153 is a two-way paging base station. , 154 denotes a subscriber device, respectively.

The VOD central control station 151 transmits a video signal to the VOD base station 152 using a frequency band of several tens of kilohertz bands, transmits a control signal to the bidirectional paging base station 153 in a bidirectional paging communication scheme, and the bidirectional paging base station 153. Control signals are received in a bidirectional paging communication scheme.

The VOD base station 152 transmits the video signal to the subscriber device 154 using a frequency band of several tens of kilohertz.

The bidirectional paging base station 153 receives the control signal from the subscriber device 154 and transmits it to the VOD central control station 151 in a bidirectional paging communication scheme, and receives the control signal from the VOD central control station 151 to receive the control signal. 154) in a bidirectional paging communication scheme.

Subscriber device 154 receives a video signal from VOD base station 152 and a control signal from bidirectional paging base station 153. Then, the control signal of the user is transmitted to the VOD central control station 151 through the bidirectional paging base station 153 by using the bidirectional paging communication scheme.

16 is another exemplary diagram of a VOD central control station of a two-way wireless VOD system using the two-way paging communication method according to the present invention, 161 is a two-way paging receiving apparatus, 162 is a control signal decoding Device, 163 is an external video source control unit, 164 is a video server, 165 is a backup tape storage device, 166 is a subscriber information storage HDD, 167 is a subscriber control signal generator, 168 is a two-way paging transmission device, 169 is a microwave transmission device. Represent each.

The VOD central control station 151 receives a control signal transmitted from the bidirectional paging base station 153 through the bidirectional paging receiving device 161.

The received control signal is analyzed by the control signal decoding apparatus 162 and input to the video server 164, the subscriber information storage HDD 166, the subscriber control signal generator 167, and the external video source controller 163.

The external video source controller 163 selects and controls a program supplied by an information provider other than the video server 164 according to the control signal of the subscriber. The video server 164 selects a program or performs a necessary control operation according to the data sent from the control signal decoding apparatus 162. The result of the selected program or control operation is transmitted to the VOD base station 152 via the microwave transmission device 169.

Meanwhile, the subscriber information storage HDD 166 receives and stores subscriber information such as a charging signal from the control signal decoding device 162, and the backup tape storage device 165 records information when a failure of the subscriber information storage HDD 166 occurs. Save backup data to prevent loss.

The subscriber control signal generator 167 generates an appropriate control signal for controlling the subscriber in accordance with signals input from the control signal decoding device 162 and the subscriber information storage HDD 166. The generated signal for subscriber control is transmitted to the bidirectional paging base station 153 via the bidirectional paging transmission device 168.

17 is another exemplary diagram of a VOD base station of a two-way wireless VOD system using a two-way paging communication method according to the present invention, 171 is a microwave receiving device, 172 is a down converter, and 173 is a An amplifier, 174 denotes a demodulator, 175 denotes a receiving video signal quality analyzer, 176 an upconverter, and 177 denotes a microwave transmitting apparatus.

The microwave receiving apparatus 171 of the VOD base station 152 directly receives a radio wave containing a video signal transmitted from the VOD central control station 151 and transmits it to a down converter 172.

The down converter 172 converts microwaves of frequencies of several tens of kHz into frequencies of several kHz to facilitate amplification in the amplifier 173. The signal input from the down converter 172 is amplified by the amplifier 173 and then input to the received video signal quality analyzer 175 to evaluate its quality. The signal amplified by the amplifier 173 is demodulated by the demodulator 174 and then input to the received video signal quality analyzer 175 to evaluate its quality. The demodulator 174 and the video signal quality analyzer 175 may be omitted because they are not essential equipment of the VOD base station 152.

The signal amplified by the amplifier 173 is converted into a frequency of several tens of kHz band by the up converter 176 and transmitted to the subscriber device 154 via the microwave transmission device 177.

18 is another exemplary diagram of a bidirectional paging base station of a bidirectional wireless VOD system using a bidirectional paging communication method according to an embodiment of the present invention, where 181 is a bidirectional paging receiving apparatus and 182 is an electric field strength measuring apparatus. 183 denotes a bidirectional paging transmission apparatus, 184 denotes a base station control apparatus, 185 denotes a packet data processing apparatus, 186 denotes a synchronization signal generator, 187 denotes a modulator, and 188 denotes a bidirectional paging central control station.

The bidirectional paging receiving device 181 receives a control signal from the VOD central control station 151 or the subscriber device 154 to receive the electric field strength measuring device 182, the base station control device 184, and the packet data processing device 185. To send. The electric field strength measuring apparatus 182 estimates the magnitude of the received control signal and transmits information about the magnitude to the base station controller 184 and the external bidirectional paging central control station 188.

The bidirectional paging central control station 188 synthesizes the information from the various base stations, finds the location area where the control signal is transmitted, and transmits the necessary control signals and data to the base stations in the area.

The base station controller 184 receives the outputs of the bidirectional paging receiving apparatus 181 and the electric field strength measuring apparatus 182, receives the outputs of the bidirectional paging central control station 188, and analyzes the outputs of the bidirectional paging receiving apparatus 182. The bidirectional paging transmission device 183 is controlled.

The packet data processing apparatus 185 processes the packet data passed through the bidirectional paging receiving apparatus 181 and reassembles the packet data into a new data packet suitable for transmission. The reassembled packet is modulated by the modulator 187 and transmitted to the VOD central control station 151 or subscriber device 154 via the bidirectional paging transmission device 183. The sync signal generator 186 receives the outputs of the base station controller 184 and the packet data processor 185, generates a sync signal necessary for receiving data, and transmits the sync signal to the modulator 187.

19 is an exemplary diagram of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication method according to the present invention for transmission of various control signals, 191 is a VOD central control station, 192 is a VOD base station, 193 is a CDPD, CDMA, or PCS base station, 194 represents a subscriber device, respectively.

The VOD central control station 191 receives a control signal from the VOD base station 192 and transmits a video signal and a control signal to the VOD base station 192.

In the VOD base station 192, the video signal is transmitted to the subscriber device 194 using a frequency band of several tens of kHz to the subscriber, and the control signal is transmitted through the CDPD, CDMA, or PCS communication through the CDPD, CDMA, or PCS base station 193. To subscriber device 194. The VOD base station 192 also receives a control signal from the subscriber device 194 via the CDPD, CDMA, or PCS base station 193 and transmits it to the VOD central control station 191.

20 is an illustration of a VOD central control station of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication method for transmitting various control signals according to the present invention, 201 is a microwave receiving device, 202 is a control signal decoding device 203 denotes an external video source controller, 204 denotes a video server, 205 denotes a multiplexing device, 206 denotes a subscriber control signal generator, 207 denotes a microwave transmission device, 208 denotes a subscriber information storage HDD, and 209 denotes a backup tape storage device.

The VOD central control station 191 receives a control signal transmitted from the VOD base station 192 through the microwave reception device 201.

The control signal decoding device 202 decodes a control signal received from the microwave reception device 201 to control the external video source control unit 203 or the video server 204, and transmits control data to the subscriber information storage HDD 208. ) And the signal generator 206 for subscriber control.

The external video source controller 203 selects and controls a program supplied by a signal provider other than the video server 204 according to the control signal of the control signal decoding apparatus 202. The video server 204 selects a program or performs a necessary control operation according to the control signal of the subscriber sent from the control signal decoding device 202.

The subscriber control signal generator 206 generates a subscriber control signal by using the control data from the control signal decoding device 202 and the information stored in the subscriber information storage HDD 208.

The signals input from the external video source controller 203, the video server 204, and the subscriber control signal generator 206 are multiplexed in the multiplexing apparatus 205, and are then multiplexed by the VOD base station through the microwave transmitting apparatus 207. Is sent to 192. On the other hand, the subscriber information storage HDD 208 receives and stores subscriber information such as billing information from the control signal decoding device 202, and the backup tape storage device 209 when a failure of the subscriber information storage HDD 208 occurs. Save backup data to prevent information loss.

21 is an exemplary diagram of a VOD base station of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication method according to the present invention, 211 is a microwave receiving device, 212 is a down converter, 213, 221 Silver amplifier, 214 is demodulator, 215 is CDPD, CDMA, or PCS transmitter, 216 is signal separation device, 217 is receiving video signal quality analyzer, 218, 223 is microwave transmitter, 219, 222 is up converter, 220 Represents a CDPD, CDMA, or PCS receiving device, respectively.

The microwave receiving apparatus 211 of the VOD base station 192 directly receives a radio wave containing a video signal and a control signal transmitted from the VOD central control station 71 and transmits the radio wave to the down converter 212. The down converter 212 converts microwaves of frequency of several tens of kHz into frequencies of several kHz and transmits them to the signal separation device 216.

The signal separation device 216 separates the signal received from the down converter 212 into a video signal and a control signal, and transmits the control signal to the CDPD, CDMA, or PCS transmitter 215, and the video signal is an amplifier. Transmit to (213). The quality of the signal amplified by the amplifier 213 is evaluated by the reception video signal quality analyzer 217. Further, the signal amplified by the amplifier 213 is demodulated by the demodulator 214 and then input to the received video signal quality analyzing apparatus 217 to evaluate its quality. The demodulator 214 and the video signal quality analyzer 217 may be omitted because they are not essential equipment of the VOD base station 192.

The signal passing through the amplifier 213 is converted into a frequency of several tens of kHz band in the up converter 219 and broadcasted to the subscriber device 194 via the microwave transmission device 218. Meanwhile, the CDPD, CDMA, or PCS transmitter 215 receives a control signal from the signal separation device 216 and transmits the control signal to the CDPD, CDMA, or PCS base station 193 in a CDPD, CDMA, or PCS communication scheme.

The CDPD, CDMA, or PCS receiving device 220 receives a control signal from the CDPD, CDMA, or PCS base station 193, and the amplifier 221 receives a control signal from the CDPD, CDMA, or PCS receiving device 202. Is amplified and transmitted to the up converter 222. The up converter 222 converts a frequency of several kHz into microwaves of several tens of kHz and transmits the microwave to the VOD central control station 191 through the microwave transmission device 223.

FIG. 22 is an exemplary diagram of a CDPD, CDMA, or PCS base station of a bidirectional wireless VOD system using a CDPD, CDMA, or PCS communication scheme for transmitting various control signals according to the present invention, and 224 is a CDPD, CDMA, or PCS receiving apparatus. , 225, 227 denotes an amplifier, 226 denotes a subscriber call processing apparatus, and 228 denotes a CDPD, CDMA, or PCS transmitting apparatus.

The CDPD, CDMA, or PCS base station 193 serves to relay the control signal transmitted from the VOD base station 192 to the subscriber device 194 and the control signal transmitted to the subscriber to the VOD base station 192. The CDPD, CDMA, or PCS receiving device 224 receives a control signal transmitted from the subscriber device 194 or the VOD base station 192. The amplifier 225 amplifies the signal and supplies the received signal to the subscriber call processing device 226. The signal passing through the subscriber call processing device 226 is assigned to an appropriate channel and amplified by the amplifier 227 and transmitted to the subscriber device 194 or the VOD base station 192 through the CDPD, CDMA, or PCS transmitting device 228. do.

23 is another exemplary diagram of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication method according to the present invention for transmitting various control signals, 231 is a VOD central control station, 232 is a VOD base station, 233 is a CDPD, CDMA, or PCS base station, 234 represents a subscriber device, respectively.

The subscriber device 234 generates control signals for selecting various programs and transmits them to the CDPD, CDMA, or PCS base station 233 in a CDPD, CDMA, or PCS communication manner, and from the CDPD, CDMA, or PCS base station 233. A control signal is received, and a video signal is received from the VOD base station 232 so that the subscriber can watch the program.

The CDPD, CDMA, or PCS base station 233 receives various control signals from the subscriber device 234 and transmits them to the VOD central control station 231 by CDPD, CDMA, or PCS communication, and the VOD central control station 231. Control signal is transmitted to the subscriber device 234 in a CDPD, CDMA, or PCS communication scheme.

The VOD central control station 231 receives and processes various control signals from the subscriber device 234 through the CDPD, CDMA, or PCS base station 233, and controls the transmission signal so that the video and audio signals have frequencies of several tens of kHz. The band is transmitted to the VOD base station 232 and the control signal is transmitted to the CDPD, CDMA, or PCS base station 233 by CDPD, CDMA, or PCS communication.

The VOD base station 232 transmits the video and audio signals received from the VOD central control station 231 to the subscriber device 234 in the tens of microseconds band.

24 is a detailed configuration diagram of a VOD central control station of a two-way wireless VOD system using the CDPD, CDMA, or PCS communication method for transmitting various control signals according to the present invention, where 241 is a CDPD, CDMA, or PCS receiving apparatus. Is a control signal decoding device, 243 is a video server, 244 is an external video source controller, 245 is a microwave transmission device, 246 is a subscriber control signal generator, and 247 is a HDD (hard disk drive) for storing subscriber information. 248 denotes a backup tape storage device, and 249 denotes a CDPD, CDMA, or PCS transmission device, respectively.

The VOD central control station 231 receives the subscriber control signal transmitted from the CDPD, CDMA, or PCS base station 233 through the CDPD, CDMA, or PCS receiving apparatus 241. The received control signal is analyzed by the control signal decoding apparatus 242 and input to the video server 243, the subscriber information storage HDD 247, the subscriber control signal generator 246, and the external video source controller 244.

The external video source controller 244 selects and controls a program supplied by a signal provider other than the video server 243 according to the control signal of the control signal decoding apparatus 242. The video server 243 selects a program or performs a necessary control operation according to the control signal of the subscriber sent from the control signal decoding device 242. The result of the selected program or control operation is transmitted to the VOD base station 232 via the microwave transmission device 245.

The subscriber control signal generator 246 generates an appropriate control signal for controlling the subscriber in accordance with signals input from the control signal decoding device 242 and the subscriber information storage HDD 247. The generated subscriber control signal is transmitted to the CDPD, CDMA, or PCS base station 233 via the CDPD, CDMA, or PCS transmitter 249 via the CDPD, CDMA, or PCS transmitter 249. On the other hand, the subscriber information storage HDD 247 receives and stores subscriber information such as a charging signal from the control signal decoding device 242, and the backup tape storage device 248 information when a failure of the subscriber information storage HDD 247 occurs. Save backup data to prevent loss.

The VOD base station 232 transmits the video signal transmitted from the microwave transmission device 245 of the VOD central control station 231 to the subscriber device 234 using microwaves of several tens of microseconds.

25 is another configuration diagram of a VOD base station of a two-way wireless VOD system using a CDPD, CDMA, or PCS communication method according to the present invention, 251 is a microwave receiving device, 252 is a down converter ), 253 denotes an amplifier, 254 denotes a demodulator, 255 denotes a received video signal quality analyzer, 256 denotes a microwave transmission device, and 257 denotes an up converter.

The microwave receiving device 251 of the VOD base station 232 directly receives a radio wave containing a video signal transmitted from the VOD central control station 231 and transmits it to a down converter 252. The down converter 252 converts microwaves having a frequency of several tens of kHz from the microwave receiver 251 into several kHz to facilitate amplification in the amplifier 53.

The signal amplified by the amplifier 253 is input to the reception video signal quality analyzer 255 and its quality is evaluated. In addition, the signal amplified by the amplifier 253 is demodulated by the demodulator 254 and input to the received video signal quality analyzer 255 to evaluate its quality.

The video signal quality analyzer 255 and demodulator 254 may be omitted because they are not essential equipment of the VOD base station 232.

The up converter 257 converts the signal passing through the amplifier 253 into a frequency of several tens of kHz band and broadcasts it to the subscriber device 234 via the microwave transmission device 256.

The CDPD, CDMA, or PCS base station 233 transmits a subscriber control signal transmitted from the CDPD, CDMA, or PCS transmitter 249 of the VOD central control station 231 by using a CDPD, CDMA, or PCS communication scheme. To 234.

26 is another configuration diagram of a CDPD, CDMA, or PCS base station of a two-way wireless VOD system using CDPD, CDMA, or PCS communication scheme according to the present invention, and 261 is a CDPD, CDMA, or PCS base station. The apparatus 262, 264 represents an amplifier, 263 represents a subscriber call processing apparatus, and 265 represents a CDPD, CDMA, or PCS transmitting apparatus, respectively.

The CDPD, CDMA, or PCS base station 233 relays the control signal transmitted from the VOD central control station 231 to the subscriber device 234, and the control signal transmitted from the subscriber device 234 to the VOD base station 232. It acts as a relay.

The CDPD, CDMA, or PCS receiving device 261 receives the control signal transmitted from the subscriber device 234 or the VOD central control station 231 and transmits it to the amplifier 262. The amplifier 262 amplifies the received signal and supplies it to the subscriber call processing apparatus 263. The signal passing through the subscriber call processing unit 263 is assigned to an appropriate channel and amplified by the amplifier 264 to be connected to the subscriber unit 234 or the VOD central control station 231 via the CDPD, CDMA, or PCS transmitting unit 265. Is sent to.

Such a technique may be used in a bidirectional wireless CATV system as well as a bidirectional wireless VOD system.

As described above, the present invention can provide a service at a lower cost than a wired telephone fee without using expensive equipment and frequency resources of several tens of bands by using TRS, paging, CDPD, CDMA, or PCS communication methods. Since the telephone line is not used, it does not interfere with communication using the telephone line while watching a program.

Claims (46)

In a two-way wireless on-demand video service (VOD) system having a VOD central control station 31, a VOD base station 32, and a subscriber device 34, a control signal received using TRS communication. A VOD central control station 31 for transmitting a video signal to the VOD base station 32 using microwaves, and for transmitting a control signal using TRS communication; A VOD base station (32) which receives a video signal from the VOD central control station (31) and transmits the signal to the subscriber device (34) using microwaves; Receives a control signal from the subscriber device 24 and sends it to the VOD central control station 31 using TRS communication, and receives a control signal from the VOD central control station 31 to the subscriber device 34. A TRS base station 33 for transmitting using TRS communication; And a subscriber device 34 which transmits a control signal to the TRS base station 33 using TRS communication, receives a control signal from the TRS base station 33, and receives a video signal from the VOD base station 32. Two-way wireless VOD system characterized in that it comprises. The VOD central control station (31) according to claim 1, further comprising: TRS data receiving means (41) for receiving a control signal from the TRS base station (33); Control signal decoding means (42) for receiving and analyzing a control signal from the TRS data receiving means (41); A video server (43) for selecting a program or performing a control operation according to the control signal of the subscriber received from the control signal decoding means (42); Microwave transmission means (45) for receiving a result of a selected program or control operation from the video server (43) and transmitting the result to the VOD base station (32) using microwaves; Information storage means (47, 48) for receiving and storing subscriber information from the control signal decoding means (42); Signal generating means (46) for generating a control signal for controlling a subscriber in accordance with information received from said control signal decoding means (42) and information storage means (47, 48); And TRS data transmission means (49) for receiving a signal for subscriber control from the signal generation means (46) and transmitting it to the TRS base station (33) using TRS communication. According to claim 2, According to the control signal of the control signal decoding means 42 selects a program supplied by an information provider other than the video server 43, or performs a control operation to return the result of the microwave transmission means ( 45) further comprising an external video source control means (44) for transmitting to said VOD base station (32). 4. The information storage means (47) according to claim 2 or 3, wherein the information storage means (47, 48) receives and stores subscriber information such as billing information from the control signal decoding means (42), and sends the signal to the signal generation means (46). A subscriber information storage HDD 47 for outputting subscriber information; And a backup tape storage device (48) for storing backup data in order to prevent loss of information when a failure of the subscriber information storage HDD (47) occurs. The VOD base station (32) according to claim 1, further comprising: microwave receiving means (51) for receiving a video signal from the VOD central control station (31); A down converter 52 for receiving the output of the microwave receiving means 51 to down convert the frequency; Amplifying means (53) for receiving and amplifying the output of the frequency drop converting means (52); An up converter 57 for receiving an output of the amplifying means 53 and up-converting the frequency; And microwave transmitting means (56) for receiving the output of the frequency rising converting means (57) and transmitting it to the subscriber device (34) using microwaves. 6. The apparatus of claim 5, further comprising: demodulation means (54) for receiving an output of the amplification means (53); And received video signal quality analyzing means (55) for receiving an output of the amplifying means (53) or the demodulating means (54) and evaluating the quality. 2. The apparatus of claim 1, wherein the TRS base station (33) comprises: TRS receiving means (61) for receiving a control signal from the subscriber device (34) or the VOD central control station (31); First amplifying means (62) for receiving and amplifying the output of the TRS receiving means (61); Subscriber call processing means (63) for receiving an output of the first amplification means (62) and allocating a channel; Second amplifying means (64) for receiving and amplifying the output of the subscriber call processing means (63); And TRS transmitting means (65) for receiving the output of the second amplifying means (64) and sending it to the subscriber device (34) or the VOD central control station (31) using TRS communication. Wireless VOD System. In a two-way wireless on-demand video service (VOD) system having a VOD central control station 71, a VOD base station 72, and a subscriber device 74, according to a control signal received from the VOD base station 72. A VOD central control station (71) for transmitting video signals and control signals to the VOD base station (72); Receives a video signal from the VOD central control station 71 and transmits it to the subscriber device 74, receives and transmits a control signal from the VOD central control station 71, and receives a control signal to control the VOD central control. A VOD base station 72 transmitting to the station 71; A TRS (Trunked Radio Service) base station that receives a control signal from the subscriber device 74 and transmits it to the VOD base station 72, and receives a control signal from the VOD base station 72 and sends it to the subscriber device 74. (73); And a subscriber device (74) for transmitting a control signal to the TRS base station (73), receiving a control signal from the TRS base station (73), and receiving a video signal from the TRS base station (72). Two-way wireless VOD system. 9. The apparatus of claim 8, wherein the VOD central control station (71) comprises: microwave receiving means (81) for receiving a control signal transmitted from the VOD base station (72) using microwaves; Control signal decoding means (82) for receiving and analyzing control signals from the microwave receiving means (81); A video server (84) for selecting a program or performing a control operation according to the control signal of the subscriber received from the control signal decoding means (82); Information storage means (88, 89) for receiving and storing subscriber information from the control signal decoding means (82); Signal generating means (86) for generating a control signal for controlling the subscriber in accordance with information received from the control signal decoding means (82) and the tone storage means (88, 89); Multiplexing means (85) for receiving and outputting the outputs of the video server (84) and the signal generating means (86); And microwave transmitting means (87) for receiving the output of the multiplexing means (85) and transmitting the microwaves to the VOD base station (720). The multiplexing means (85) according to claim 9, wherein a program or a control operation is selected by a program supplied by an information provider other than the video server (84) according to the control signal of the control signal decoding means (82), and the result of the multiplexing means (85). And an external video source control means (83) for outputting to the bidirectional wireless VOD system. 11. The method according to claim 9 or 10, wherein the information storage means (88, 89) receives and stores subscriber information such as billing information from the control signal decoding means (82), and sends it to the signal generation means (86). A subscriber information storage HDD 88 for outputting subscriber information; And a backup tape storage device (89) for storing backup data in order to prevent loss of information when a failure of the subscriber information storage HDD (88) occurs. 9. The apparatus of claim 8, wherein the VOD base station (72) comprises: microwave receiving means (91) for receiving video signals and control signals transmitted from the VOD central control station (71) using microwaves; A down converter (92) for receiving the output of the microwave receiving means (91) to change the frequency down; Signal separation means (96) for receiving the output of the frequency down conversion means (92) and separating and outputting the video signal and the control signal; TRS transmission means (95) for receiving a control signal from the signal separation means (96) and sending it to the TRS base station (73) using TRS communication; First amplification means (93) for receiving and amplifying a video signal from the signal separation means (96); A first frequency up-converting means (Up Converter) 99 for receiving an output of the first amplifying means 93 and up-converting the frequency; First microwave transmission means (98) which receives the output of the first frequency rising conversion means (99) and transmits it to the subscriber device (74) using microwave; TRS receiving means (100) for receiving a control signal transmitted from the TRS base station (73) using TRS communication; Second amplifying means (101) for receiving and amplifying the output of the TRS receiving means (100); Second frequency up-converting means (102) for receiving the output of the second amplifying means (101) to up-convert the frequency; And a first microwave transmitting means 103 which receives the output of the second frequency rising converting means 102 and transmits it to the VOD central control station 71 using microwaves. VOD system. 13. The apparatus of claim 12, further comprising: demodulation means (94) for receiving and outputting the output of the first amplification means (93); And a received video signal quality analyzing means (97) for receiving an output of the first amplifying means (93) or the demodulating means (94) and evaluating the quality. 9. The apparatus of claim 8, wherein the TRS base station (73) comprises: TRS receiving means (104) for receiving a control signal transmitted from the subscriber apparatus (74) or the VOD base station (72) using TRS communication; First amplifying means (105) for receiving and amplifying the output of the TRS receiving means (104); Subscriber call processing means (106) for receiving an output of the first amplifying means (105) and allocating a channel; Second amplifying means (107) for receiving and amplifying the output of the subscriber call processing means (106); And TRS transmitting means 108 which receives the output of the second amplifying means 107 and transmits it to the subscriber device 74 or the VOD base station 72 using TRS communication. system. In a two-way wireless on-demand video service (VOD) system having a VOD central control station 111, a VOD base station 112, and a subscriber device 114, according to a control signal received from the VOD base station 112; A VOD central control station (111) for transmitting video signals and control signals to the VOD base station (112) using microwaves; Receives a video signal from the VOD central control station 111 and transmits it to the subscriber device 114 using a microwave, and receives a control signal from the VOD central control station 111 and transmits it using bidirectional paging communication. And a VOD base station 112 which receives a control signal and transmits the signal to the VOD central control station 111 using microwaves; Receives a control signal from the subscriber device 114 and transmits it to the VOD base station 112 using bidirectional paging communication, and receives a control signal from the VOD base station 112 to the subscriber device 114 bidirectional paging communication. Bidirectional paging base station 113 to transmit using; And a subscriber device 114 which transmits a control signal to the TRS base station 113 by using bidirectional paging communication, receives a control signal from the TRS base station 113, and receives a video signal from the TRS base station 112. Two-way wireless VOD system comprising a. 16. The apparatus of claim 15, wherein the VOD central control station (111) comprises: microwave receiving means (121) for receiving a control signal from the VOD base station (112); Control signal decoding means 122 for receiving and analyzing a control signal from the microwave receiving means 121; A video server 123 for selecting a program or performing a control operation according to a control signal of a subscriber received from the control signal decoding means 122; Information storage means (128, 129) for receiving and storing subscriber information from the control signal decoding means (122); Signal generation means 126 for generating a control signal for controlling a subscriber in accordance with information received from the control signal decoding means 122 and information storage means 128 and 129 (the video server 123 and the signal generating means); Multiplexing means (125) for receiving and outputting the output of the multiplier (126); and microwave transmitting means for receiving the output of the multiplexing means (125) and transmitting it to the VOD base station (112) using microwaves ( 127). 17. The method of claim 16, wherein the multiplexing means 125 selects a program supplied by an information provider other than the video server 123 or performs a control operation according to the control signal of the control signal decoding means 122. And an external video source control means (124) for outputting to the bidirectional wireless VOD system. 18. The apparatus of claim 16 or 17, wherein the information storing means (128, 129) receives and stores subscriber information such as billing information from the control signal decoding means (1222), and sends it to the signal generating means (126). A subscriber information storage HDD 128 for outputting subscriber information; And a backup tape storage device (129) for storing backup data in order to prevent loss of information when a failure of the subscriber information storage HDD (128) occurs. 9. The apparatus of claim 8, wherein the VOD base station (112) comprises: microwave receiving means (1301) for receiving a video signal and a control signal from the VOD central control station (111); A frequency converter 1302 that receives the output of the microwave receiving means 1301 and converts the frequency down; Signal separation means (1303) for receiving the output of the frequency down conversion means (1302) and separating the video signal and the control signal and outputting them; Amplifying means (1304) for receiving and amplifying a video signal from the signal separating means (1303); Control signal processing means (1310) for receiving and processing a control signal from the signal separation means (1303); First modulating means (1311) for receiving and modulating the output of the control signal processing means (1310); Bidirectional paging transmission means (1312) for receiving the output of the first modulation means (1311) and sending it to the bidirectional paging base station (113) using bidirectional paging communication; Bidirectional paging receiving means (1313) for receiving a control signal from the bidirectional paging base station (113); First demodulating means (1314) for receiving and demodulating the output of the bidirectional paging receiving means (1313); Text information processing means 1315 for receiving text output from the first demodulation means 1314 and processing text information; Character information display means 1316 for receiving and displaying the output of the character information processing means 1315; Second modulating means (1317) for receiving and modulating the output of the character information processing means (1315); First frequency up-converting means (1318) for receiving the output of the second modulating means (1317) and up-converting the frequency; A frequency mixer 1307 for mixing the frequencies by receiving the outputs of the first amplifying means 1304 and the first frequency rising converting means 1318; Second frequency up-converting means (1308) for receiving the output of the frequency mixing means (1307) and up-converting the frequency; And a microwave transmitting means 1309 which receives the output of the second frequency rising converting means 1308 and transmits it to the VOD central control station 111 or the subscriber device 114 by using the microwave. Two-way wireless VOD system. 20. The apparatus of claim 19, further comprising: first demodulation means (1305) for receiving and demodulating the output of the amplification means (1304); And received video signal quality analyzing means (1306) for receiving an output of the amplifying means (1304) or the second demodulating means (1305) and evaluating the quality. 16. The apparatus of claim 15, wherein the bidirectional paging base station (113) comprises: bidirectional paging receiving means (141) for receiving a control signal from the VOD base station (112) or the subscriber station (114); Electric field strength measuring means (142) for estimating the magnitude of the control signal received from the bidirectional paging receiving means (141) and outputting information on the magnitude to an external bidirectional paging central control station (148); Base station control means (144) for receiving and analyzing the outputs of the bidirectional paging receiving means (141), the electric field strength measuring means (142), and the bidirectional paging central control station (148); Packet data processing means (145) for processing the packet data received from the bidirectional paging receiving means (141) and reassembling them into new data packets suitable for transmission; Synchronizing signal generating means (146) for receiving an output of said packet data processing means (145) and base station control means (144) and generating a synchronizing signal; Modulation means (147) for modulating a packet input from said packet data processing means (145) in accordance with a synchronization signal of said synchronization signal generating means (146); And a bidirectional paging transmission means 143 which transmits the output of the modulation means 147 to the VOD base station 112 or the subscriber device 114 using bidirectional paging communication under the control of the base station control means 144. Two-way wireless VOD system characterized in that it comprises. In a two-way wireless on-demand video service (VOD) system having a VOD central control station 151, a VOD base station 152, and a subscriber device 154, the video according to a control signal received using two-way paging communication. A VOD central control station 151 for transmitting a signal to the VOD base station 152 using microwaves, and for transmitting a control signal using bidirectional paging communication; A VOD base station 152 which receives a video signal from the VOD central control station 151 and transmits it to the subscriber device 154 using microwaves; Receives a control signal from the subscriber device 154 and sends it to the VOD central control station 151 using bidirectional paging communication, and receives a control signal from the VOD central control station 151 to receive the control device. A bidirectional paging base station 153 for transmitting by using bidirectional paging communication; And a subscriber device which transmits a control signal to the bidirectional paging base station 153 using bidirectional paging communication, receives a control signal from the bidirectional paging base station 153, and receives a video signal from the VOD base station 152. 154). 23. The apparatus of claim 22, wherein the VOD central control station (151) comprises: bidirectional paging receiving means (161) for receiving a control signal from the bidirectional paging base station (153); Control signal decoding means (162) for receiving and analyzing a control signal from the bidirectional paging receiving means (161); A video server 164 for selecting a program or performing a control operation according to a control signal of a subscriber received from the control signal decoding means 162; Microwave transmission means (169) for receiving a result of a selected program or control operation from the video server (164) and transmitting the result to the VOD base station (152) using microwaves; Information storage means (165, 166) for receiving and storing subscriber information from the control signal decoding means (162); Signal generating means (167) for generating a control signal for controlling a subscriber in accordance with information received from said control signal decoding means (162) and information storage means (165, 166); And a bidirectional paging transmitter 168 for receiving a signal for subscriber control from the signal generator 167 and transmitting the signal to the bidirectional paging base station 153 using bidirectional paging communication. system. 24. The apparatus according to claim 23, wherein a program or a control operation of a program supplied from an information provider other than the video server 164 is performed according to the control signal of the control signal decoding means 162, and a result of the microwave transmission means ( 169, further comprising an external video source control means (163) for transmitting to the VOD base station (152). The method according to claim 23 or 24, wherein the information storing means (165, 166) receives and stores subscriber information such as billing information from the control signal decoding means (162), and sends it to the signal generating means (167). A subscriber information storage HDD 166 for outputting subscriber information; And a backup tape storage device (165) for storing backup data in order to prevent loss of information when a failure of the subscriber information storage HDD (166) occurs. 23. The apparatus of claim 22, wherein the VOD base station (152) comprises: microwave receiving means (171) for receiving a video signal from the VOD central control station (151); A down converter for converting a frequency by receiving the output of the microwave receiving means (171); Amplifying means (173) for receiving and amplifying the output of the frequency drop converting means (172); A frequency up-converting means (Up Converter) 176 which receives the output of the amplifying means 173 and up-converts the frequency; And microwave transmission means (177) for receiving the output of the frequency rising conversion means (176) and transmitting the result to the subscriber device (154) using microwaves. 27. The apparatus of claim 26, further comprising: demodulation means (174) for receiving and demodulating the output of the amplification means (173); And a received video signal quality analyzing means (175) for receiving an output of the amplifying means (173) or the demodulating means (174) to evaluate the quality. 23. The apparatus of claim 22, wherein the bidirectional paging base station (153) comprises: bidirectional paging receiving means (181) for receiving a control signal from the VOD central control station (151) or subscriber device (154); Electric field strength measuring means (182) for estimating the magnitude of the control signal received from the bidirectional paging receiving means (181) and outputting information on the magnitude to an external bidirectional paging central control station (188); Base station control means (184) for receiving and analyzing the outputs of the bidirectional paging receiving means (181), the electric field strength measuring means (182), and the bidirectional paging central control station (188); Packet data processing means (185) for processing the packet data received from the bidirectional paging receiving means (181) and reassembling them into new data packets suitable for transmission; Synchronization signal generation means (186) for receiving the output of the packet data processing means (185) and the base station control means (184) and generating a synchronization signal; Modulation means (187) for modulating a packet input from said packet data processing means (185) in accordance with a synchronization signal of said synchronization signal generating means (186); And bidirectional paging transmission means 183 for transmitting the output of the modulation means 187 to the VOD central control station 151 or subscriber device 154 using bidirectional paging communication under the control of the base station control means 184. Bidirectional wireless VOD system characterized in that it comprises a). In a two-way wireless on-demand video service (VOD) system having a VOD central control station 191, a VOD base station 192, and a subscriber device 194, according to a control signal received from the VOD base station 192. A VOD central control station 191 for transmitting video and control signals to the VOD base station 192 using microwaves; Receives a video signal from the VOD central control station 191 and transmits it to the subscriber device 194 using a microwave, and transmits a control signal received from the VOD central control station 191 (Code Division Multiple Access) A VOD base station 192 which transmits by using communication, receives a control signal, and transmits a microwave to the VOD central control station 191 by receiving a control signal from the subscriber device 194; A CDMA base station 193 for transmitting to the 192 using CDMA communication, receiving a control signal from the VOD base station 192, and transmitting the CDMA communication to the subscriber device 194 using the CDMA base station; A subscriber that transmits using CDMA communication to the terminal 193, receives a control signal from the CDMA base station 193, and receives a video signal from the VOD base station 192. Two-way radio VOD system comprising the values (194). 30. The apparatus of claim 29, wherein the VOD central control station (191) comprises: microwave receiving means (201) for receiving a control signal from the VOD base station (192); Control signal decoding means (202) for receiving and analyzing a control signal from the microwave receiving means (201); A video server 204 for selecting a program or performing a control operation according to a control signal of a subscriber received from the control signal decoding means 202; Information storage means (208, 209) for receiving and storing subscriber information from the control signal decoding means (202); Signal generating means (206) for generating a control signal for controlling a subscriber in accordance with information received from said control signal decoding means (202) and information storage means (208, 209); Multiplexing means (205) for multiplexing the outputs of the video server (204) and signal generating means (206); And microwave transmitting means (207) for receiving the output of the multiplexing means (205) and transmitting the microwaves to the VOD base station (192). 31. The multiplexing means (205) according to claim 30, wherein a program or a control operation is selected by a program supplied by an information provider other than the video server (204) according to the control signal of the control signal decoding means (202), and the result of the multiplexing means (205). And an external video source control means (203) for outputting to the bidirectional wireless VOD system. 32. The information storage means (208, 209) receives and stores subscriber information such as billing information from the control signal decoding means (202), and sends it to the signal generating means (206). A subscriber information storage HDD 208 for outputting subscriber information; And a backup tape storage device (209) for storing backup data in order to prevent loss of information when a failure of the subscriber information storage HDD (208) occurs. 30. The apparatus of claim 29, wherein the VOD base station (192) comprises: microwave receiving means (211) for receiving a video signal and a control signal from the VOD central control station (191); A down converter (212) for converting the frequency down by receiving the output of the microwave receiving means (211); A signal separating means (216) for receiving the output of the frequency down converting means (212) and separating and outputting the video signal and the control signal; CDMA transmission means (215) for receiving a control signal from the signal separation means (216) and sending it to the CDMA base station (193) using CDMA communication; First amplifying means (213) for receiving and amplifying a video signal from the signal separating means (216); First frequency up-converting means (Up Converter) 219 for receiving an output of the first amplifying means (213) and up-converting the frequency; First microwave transmission means (218) for receiving the output of the first frequency rising conversion means (219) and transmitting the signal to the subscriber device (194) using microwave; CDMA receiving means (220) for receiving a control signal from the CDMA base station (193); Second amplifying means (221) for receiving and amplifying the output of the CDMA receiving means (220); Second frequency rising conversion means (222) for receiving the output of the second amplifying means (221) and converting the frequency up; And a second microwave transmission means 223 which receives the output of the second frequency rising conversion means 222 and transmits it to the VOD central control station 191 using microwaves. VOD system. 34. The apparatus of claim 33, further comprising: demodulation means (214) for receiving and demodulating the output of the first amplification means (213); And a received video signal quality analyzing means (217) for receiving an output of the first amplifying means (213) or the demodulating means (214) and evaluating the quality. 30. The apparatus of claim 29, wherein the CDMA base station 193 comprises: CDMA receiving means 224 for receiving a control signal from the subscriber device 194 or the VOD base station 192; First amplifying means (225) for receiving and amplifying the output of the CDMA receiving means (224); Subscriber call processing means (226) for receiving an output of the first amplifying means (225) and allocating a channel; Second amplifying means (227) for receiving and amplifying the output of the subscriber call processing means (226); And CDMA transmitting means 228 for receiving the output of the second amplifying means 227 and sending it to the subscriber station 194 or the VOD base station 192 using CDMA communication. system. In a two-way wireless on-demand video service (VOD) system having a VOD central control station 231, a VOD base station 232, and a subscriber device 234, a video signal according to a control signal received using CDMA communication. A VOD central control station 231 for transmitting a signal to the VOD base station 232 using microwaves, and for transmitting a control signal using CDMA communication; A VOD base station 232 which receives a video signal from the VOD central control station 231 and transmits it to the subscriber device 234 using microwaves; Receives a control signal from the subscriber device 234 and sends it to the VOD central control station 231 using CDMA communication, and receives a control signal from the VOD central control station 231 to the subscriber device 234. A CDMA base station 233 which transmits using CDMA communication; And a subscriber device 234 which transmits a control signal to the CDMA base station 233 using CDMA communication, receives a control signal from the CDMA base station 233, and receives a video signal from the VOD base station 232. Two-way wireless VOD system characterized in that it comprises. 37. The apparatus of claim 36, wherein the VOD central control station (231) comprises: CDMA data receiving means (241) for receiving a control signal from the CDMA base station (233); Control signal decoding means (242) for receiving and analyzing a control signal from the CDMA data receiving means (241); A video server 243 for selecting a program or performing a control operation according to a control signal of a subscriber received from the control signal decoding means 242; Microwave transmission means (245) for receiving a result of a selected program or control operation from the video server (243) and transmitting the result to the VOD base station (232) using microwaves; Information storage means (247, 248) for receiving and storing subscriber information from the control signal decoding means (242); Signal generation means (246) for generating a control signal for controlling a subscriber in accordance with information received from the control signal decoding means (242) and information storage means (247, 248); And CDMA data transmitting means (249) for receiving a signal for subscriber control from the signal generating means (246) and transmitting it to the CDMA base station (233) using CDMA communication. 38. The apparatus according to claim 37, wherein a program supplied by an information provider other than the video server 243 is selected or a control operation is performed according to the control signal of the control signal decoding means 242, and a result of the microwave transmission means ( And an external video source control means (244) for transmitting to the VOD base station (232) via the (245). The method according to claim 37 or 38, wherein the information storing means (247, 248) receives and stores subscriber information such as billing information from the control signal decoding means (242), and sends it to the signal generating means (246). A subscriber information storage HDD 247 for outputting subscriber information; And a backup tape storage device (248) for storing backup data in order to prevent loss of information when a failure of the subscriber information storage HDD (247) occurs. 37. The apparatus of claim 36, wherein the VOD base station (232) comprises: microwave receiving means (251) for receiving a video signal from the VOD central control station (231); A down converter for converting the frequency down by receiving the output of the microwave receiving means 251; Amplifying means (253) for receiving and amplifying the output of the frequency drop converting means (252); Frequency up-converting means (Up converter) 257 for receiving the output of the amplifying means (253) and up-converting the frequency; And microwave transmitting means (256) for receiving the output of the frequency rising converting means (257) and sending it to the subscriber device (234) using microwaves. 41. The apparatus of claim 40, further comprising: demodulation means (254) for receiving and demodulating the output of the amplification means (253); And received video signal quality analyzing means (255) for receiving an output of the amplifying means (253) or the demodulating means (254) and evaluating the quality. 37. The apparatus of claim 36, wherein the CDMA base station (233) comprises: CDMA receiving means (261) for receiving a control signal from the subscriber station (234) or the VOD central control station (231); First amplifying means (262) for receiving and amplifying the output of the CDMA receiving means (261); Subscriber call processing means (263) for receiving an output of the first amplifying means (262) and allocating a channel; Second amplification means (264) for receiving and amplifying the output of the subscriber call processing means (263); And CDMA transmitting means 265 which receives the output of the second amplifying means 264 and transmits it to the subscriber station 234 or the VOD central control station 231 using CDMA communication. Wireless VOD System. In a two-way wireless on-demand video service (VOD) system having a VOD central control station 191, a VOD base station 192, and a subscriber device 194, according to a control signal received from the VOD base station 192. A VOD central control station 191 for transmitting video and control signals to the VOD base station 192 using microwaves; Receives a video signal from the VOD central control station 191 and transmits it to the subscriber device 194 using microwaves, and transmits a control signal received from the VOD central control station 191 to PCS (Personal Communications Service) communication. A VOD base station 192 for transmitting a signal using a microwave to the VOD central control station 191 by receiving a control signal; Receives a control signal from the subscriber device 194 and transmits it to the VOD base station 192 using PCS communication, and receives a control signal from the VOD base station 192 to use the PCS communication with the subscriber device 194. PCS base station 193 for transmitting by sending; And a subscriber device 194 which transmits a control signal to the PCS base station 193 using PCS communication, receives a control signal from the PCS base station 193, and receives a video signal from the VOD base station 192. Two-way wireless VOD system characterized in that it comprises. In a two-way wireless on-demand video service (VOD) system having a VOD central control station 231, a VOD base station 232, and a subscriber device 234, a video signal according to a control signal received using PCS communication. A VOD central control station 231 for transmitting a signal to the VOD base station 232 using microwaves, and for transmitting a control signal using PCS communication; A VOD base station 232 which receives a video signal from the VOD central control station 231 and transmits it to the subscriber device 234 using microwaves; Receives a control signal from the subscriber device 234 and sends it to the VOD central control station 231 using PCS communication, and receives a control signal from the VOD central control station 231 to the subscriber device 234. A PCS base station 233 for transmitting using PCS communication; And a subscriber device 234 which transmits a control signal to the PCS base station 233 using PCS communication, receives a control signal from the PCS base station 233, and receives a video signal from the VOD base station 232. Two-way wireless VOD system characterized in that it comprises. In a two-way wireless on-demand video service (VOD) system having a VOD central control station 1910, a VOD base station 192, and a subscriber device 194, the video is based on a control signal received from the VOD base station 192. A VOD central control station 191 which transmits a signal and a control signal to the VOD base station 192 using microwaves; receives a video signal from the VOD central control station 101 and transmits a video signal to the subscriber device 194. Transmits the control signal received from the VOD central control station 191 using CDPD (Personal Communications Service) communication, and receives the control signal to transmit the microwave to the VOD central control station 191. A VOD base station 192 which transmits data using the VOD base station 192, receives a control signal from the subscriber device 194, transmits the signal to the VOD base station 192 using CDPD communication, and transmits the VOD base station. A CDPD base station 193 which receives a control signal from the device 192 and transmits it to the subscriber device 194 using CDPD communication, and transmits a control signal to the CDPD base station 193 using CDPD communication, and transmits the CDPD. And a subscriber station (194) receiving a control signal from a base station (193) and receiving a video signal from the VOD base station (192). In a two-way wireless on-demand video service (VOD) system having a VOD central control station 231, a VOD base station 232, and a subscriber device 234, a video signal according to a control signal received using CDPD communication. A VOD central control station 231 for transmitting a signal to the VOD base station 232 using microwaves, and for transmitting a control signal using CDPD communication; A VOD base station 232 which receives a video signal from the VOD central control station 231 and transmits it to the subscriber device 234 using microwaves; Receives a control signal from the subscriber device 234 and sends it to the VOD central control station 231 using CDPD communication, and receives a control signal from the VOD central control station 231 to the subscriber device 234. A CDPD base station 233 for transmitting using CDPD communication; And a subscriber device 234 which transmits a control signal to the CDPD base station 233 using CDPD communication, receives a control signal from the CDPD base station 233, and receives a video signal from the VOD base station 232. Two-way wireless VOD system characterized in that it comprises.