KR19990048431A - Additional service device using a set-top box with a built-in modem - Google Patents

Abstract

The present invention relates to a supplementary service device such as a digital cable TV or a video on demand (VOD) using a set top box having a built-in modem.

A modem for modulating the received data into an analog signal and transmitting it to the telephone, and digitally demodulating the telephone signal received from the telephone; The signal received through the telephone network is divided into a supplementary service signal band and a telephone signal band, and the telephone signal is transmitted to the modem, the supplementary service signal is processed as a corresponding supplementary service, and a telephone signal received from the modem is received. It characterized in that it comprises a set-top box to communicate with the phone. According to the present invention, a communication service using a telephone is possible by incorporating a modem in a set-top box used to provide a digital cable TV and VOD service while using an existing telephone network as it is. The TV screen visually recognizes the facts, and PC and remote control are available for PC communication.

Description

Additional service device using a set-top box with a built-in modem

The present invention relates to an additional service apparatus using a set top box, and more particularly, to an additional service apparatus such as a video on demand (VOD) using a set top box having a modem.

In general, a settop box is a device that converts a compressed video signal into a standard NTSC signal by using a moving picture expert group (MPEG), which is transmitted from a video server through an ATM switch to various types of cables. In addition, an additional service such as VOD (Video On Demand) is an on-demand video service device that can be watched at home by receiving the video desired by the subscriber from the video server in the communication network directly to the set-top box through the broadband subscriber network.

1 is a block diagram showing an additional service device using a typical set-top box.

The apparatus of FIG. 1 includes a telephone station 110 having a video server, a set-top box 120, a telephone 130, and a TV 140. The set-top box 120 includes a communication network interface 122 and a VOD processing unit ( 124).

As shown in FIG. 1, a video server that stores compressed video signals such as movies, videos, and games is connected to a transmission device in the telephone station 110. In the subscriber's home, a TV with a conventional telephone 130 is provided. Or connected to the set-top box 120 is connected to the PC. The telephone station 110 transmits existing telephone information and information for additional service through the telephone line. The communication network interface 122 of the set-top box 120 first receives the telephone line, passes the information to be processed by the phone 130 separately, and inputs only the necessary data for performing the VOD to the VOD processing unit 124. 226 receives the data and processes the VOD internally and outputs the result to TV 140 or PC (not shown). As described above, since the set top box 120 unilaterally transmits phone information to the phone 130, there is a disadvantage in that two-way communication is not performed by the phone 130.

The technical problem to be achieved by the present invention is to provide an apparatus that enables additional services by telephone using a set-top box with a built-in modem.

1 is a block diagram showing an additional service device using a typical set-top box.

2 is a block diagram showing an additional service device using a set-top box according to the present invention.

3 is a detailed view of the VOD processing unit of FIG. 2.

In the additional service device for solving the above technical problem, Telephone;

A modem for modulating the received data into an analog signal and transmitting it to the telephone, and digitally demodulating the telephone signal received from the telephone; The signal received through the telephone network is divided into a supplementary service signal band and a telephone signal band, and the telephone signal is transmitted to the modem, the supplementary service signal is processed as a corresponding supplementary service, and a telephone signal received from the modem is received. It is an additional service device using a set-top box with a modem, characterized in that it comprises a set-top box to communicate with the phone.

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

2 is a block diagram showing an additional service device using a set-top box according to the present invention.

The apparatus of FIG. 2 comprises a telephone station 210 having a video server, a set top box 220, a telephone 230, and a TV 240. The set top box 220 includes a modem 222 and a communication network interface 224. ), And a VOD processing unit 226.

As shown in Fig. 2, the telephone station 210 transmits telephone information and additional services (for example, VOD service or digital cable TV service) through the telephone line. The telephone station 210 is provided with a video server and a telephone exchange which store video signals compressed with MPEG or the like. The set-top box 220 decodes a signal for an additional service received from the telephone station 210 via the telephone network, and has a built-in modem 222 to send and receive signals to and from the phone 230. Can send control signal. That is, the communication network interface unit 224 first separates the telephone information signal band and the required VOD signal band for performing VOD through the telephone line. In addition, the communication network interface unit 224 converts the service signal for each separated VOD band into a digital signal, passes the telephone information band as it is, and receives predetermined data from the modem 222 and transmits it to the VOD processing unit 226. . The modem 222 is mounted in the set-top box 220 and modulates the telephone information received from the communication network interface unit 224 and transmits it to the telephone 230. The user request service content or a predetermined command received from the telephone 230 is received. (For example, playback, repetition, or the like) or when a telephone call is received from the outside, the telephone call signal is demodulated to a digital signal and transmitted to the communication network interface unit 224. The VOD processing unit 226, which is an additional service processing unit, separates a VOD service signal, a user request signal, or an external telephone call signal received from the communication network interface unit 224 into audio, video, or graphics, and converts it into a predetermined format. Will output The TV 240 displays visual information so as to know the fact on the screen when a call is received from the outside. Set-top box 220 also includes a user interface that allows a user to send control signals to a video server located at telephone station 210 using a remote control.

3 is a detailed view of the VOD processing unit 226 of FIG. 2, and includes a demultiplexer 310, a video decoder 330, an audio decoder 340, a controller 320, a graphics processor 350, and an NTSC / PAL encoder 360. It is composed of

As shown in FIG. 3, the demultiplexer 310 separates data received from the communication network interface 224 into video, audio, and control data under the control of the controller 320. The video decoder 330 and the audio decoder 340 restore the compressed video signal and the audio signal under the control of the controller 320 to the original video signal and the audio signal. The graphic processor 350 generates a graphic under the control of the controller 320. The NTSC / PAL decoder 360 converts the format of the television signal according to the NTSC or PAL method under the control of the control unit 320.

The present invention is not limited to the above-described embodiment, and of course, modifications may be made by those skilled in the art within the spirit of the present invention. In other words, the VOD processing unit of the set-top box can be replaced by a digital cable TV processing unit that handles digital TV cable service. Can be.

As described above, according to the present invention, a communication service using a telephone is possible by embedding a modem in a set-top box used to provide digital cable TV and VOD services while using an existing telephone network as it is. If you get a TV, the screen visually recognizes the fact, and the PC and the remote control can communicate with the PC.

Claims (6)

In the additional service device, cellphone; A modem for modulating the received data into an analog signal and transmitting it to the telephone, and digitally demodulating the telephone signal received from the telephone; Separating the signal received through the telephone network into an additional service signal band and a telephone signal band, transmitting the telephone signal to the modem, processing the additional service signal as a corresponding additional service, and communicating with the telephone signal received from the modem. Additional service device using a set-top box with a built-in modem, characterized in that the set-top box. The additional service device using a set top box with a built-in modem according to claim 1, wherein the modem is mounted in the set top box. The apparatus of claim 1, wherein the supplementary service of the set top box is a VOD. The additional service apparatus of claim 1, wherein the supplementary service of the set top box is a digital cable TV. The apparatus of claim 1, wherein the set top box includes an additional service processor configured to generate text information corresponding to a call from an external device. The apparatus as claimed in claim 1, wherein the set top box includes a communication interface for separating a telephone information signal band and an additional service signal band.