KR19980043211U - Image Information Transceiver - Google Patents

Abstract

The present invention relates to an image information transceiving apparatus, and includes a driver 10 and a digital video decoder 12 for outputting an image signal by driving a tape or a disk, and outputted from the driver 10 and the digital video decoder 12. Switching switches 14 and 16 for switching image signals, a microcomputer 18 for controlling switching of the switching switches 14 and 16, and image signals outputted through the switching switches 14 and 16 An analog / digital converter 20 for converting to a digital signal, a modulator 22 for modulating the digital signal output from the analog / digital converter 20 to a telephone line 24, and the telephone line 24 The amplifier 26 amplifies the digital signal related to the image information received through the signal to a predetermined voltage level, and converts the digital signal input from the amplifier 26 into an optical signal and transmits the optical signal. A photocoupler 28 for converting the coupled circuit into an electrical signal for driving the circuit, a shift register 30 for shifting and outputting the electrical signal received from the photocoupler 28 from an input order, and the shift register A control unit 32 for receiving and outputting image information sent from the 30 or outputting a control signal, a hard disk 34 for storing the image information input from the control unit 32, and the control unit 32. A digital / analog converter 36 for converting image information stored in the hard disk 34 into an analog signal and outputting the image signal to the television 38 as a control signal is included. It is to be able to receive services through the telephone line.

Description

Image Information Transceiver

The present invention relates to an apparatus for transmitting image information, and more particularly, to an image information transceiving apparatus for servicing image information desired by a consumer at a place where image information is sold through a telephone line.

Conventionally, image information, such as a video tape, a compact disc, a laser disc, or various programs, which cannot be easily purchased by an individual, can be borrowed after a predetermined rental fee is received by a consumer for a desired tape or disc at a rental store that specializes in this. In other words, when renting a tape or disk through a rental store, the consumer visits the rental store and rents it, or the rental store delivers the tape or disk that the consumer wants. The disc had to be returned to the rental store.

In such a case, the rental store had to keep a record of the title or article of the tape or disk and the name and telephone number of the borrower to keep the tape or disk. This is because the rental goods and the lenders must be managed individually, such as damage or non-return of tapes or disks. In addition, when the lender rents a tape or a disk which is damaged or has poor quality of image information, there is a problem that mutual trust is lost.

In order to make up for this drawback, local wire broadcasting stations sometimes transmit image information through coaxial cables, which is a block diagram of a device for transmitting and receiving image information of FIG. The image information of the tape or the disk is transmitted from the cable 3 to the subscriber 5 via the coaxial cable 8 through the transmission device 3, and the subscriber 5 transmits the image information transmitted from the cable broadcasting station 1 to a separate receiver. It could be received and watched by the television 6 through (7). The telephone line 9 is connected between the cable broadcasting station 1 and the subscriber 5 and transmits and receives a voice signal between the cable broadcasting station 1 and the subscriber 5.

As such, the information transmitted from the cable broadcasting station is received by the subscriber through the coaxial cable, which means that all the subscribers connected to the coaxial cable receive the same information from the cable broadcasting station. Could not select to receive. In addition, since the coaxial cable must be installed between the cable broadcasting station and the subscriber, the image information transmitted from the cable broadcasting station is expensive to install, and when the coaxial cable is lost, such as disconnection, short circuit, or leakage, it is impossible to receive high quality image information. There was this. In addition, the wire broadcasting station transmits and receives image information stored in a tape or a disk in real time when transmitting and receiving image information to a subscriber.

The present invention has been made in view of the above problems, and the rental store that rents the image information including the cable broadcasting station transmits the data on the image information through a telephone line, and the subscriber stores the transmitted image information. An object of the present invention is to provide an image information transmitting / receiving apparatus in which image information can be used when desired.

1 is a block diagram of a conventional apparatus for transmitting and receiving image information;

2 is a block diagram of an apparatus for transmitting and receiving image information according to the present invention;

3 is a block diagram of an apparatus for transmitting and receiving image information according to another embodiment of the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: Driver 12: Digital Video Decoder

14, 16, 41-43: selector switch 18: micom

20: analog / digital converter 22: modulator

24, 48: telephone line 26: amplifier

28: Photocoupler 30: Shift Register

32: control unit 34: hard disk

36: digital / analog converter38: television

40: controller 44-46: image information

The present invention, in order to achieve the above object, in the device for transmitting and receiving image information, a driver and digital video decoder (Digital Video Disk Decoder) for outputting the image signal by driving a tape or disk, and the driver and the digital video decoder A switching switch for switching the image signal output from the camera, a microcomputer for controlling the switching of the switching switch, an analog / digital converter for converting the image signal output through the switching switch into a standardized digital signal, and the analog / digital A modulator for modulating the digital signal output from the converter to a telephone line, an amplifier for amplifying the digital signal related to image information received through the telephone line to a voltage level of a predetermined size, and a digital signal input from the amplifier. Is converted into an optical signal and transmitted. A photocoupler for converting the connected circuit into an electrical signal, a shift register for shifting and outputting the electrical signal received from the photocoupler from an input order, and receiving and outputting image information transmitted from the shift register A control unit for outputting a video signal or a control signal, a hard disk for storing image information input from the control unit, and a digital / converter for converting image information stored in the hard disk into an analog signal and outputting a video signal to a television by a control signal of the controller. An analog converter is included.

Hereinafter, the image information transmitting and receiving device of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram of an apparatus for transmitting and receiving image information according to the present invention.

The driver 10 and the digital video decoder 12 drive a video tape, a compact disc, a program, or the like on which various image information is recorded, and output the generated image information. The driver 10 drives a video tape, a compact disk or a floppy disk, and the digital video decoder 12 is integrated into the laser disk 34 as a digital signal to demodulate image information.

The switching switches 14 and 16 output image information output from the driver 10 and the digital video decoder 12, respectively, and are composed of a first switching switch 14 and a second switching switch 16. When the switching switches 14 and 16 are turned on, the image signals output from the driver 10 and the digital video decoder 12 are transmitted, and when they are turned off, the image signals are cut off.

The microcomputer 18 controls the switching of the switching switches 14 and 16, and selectively switches the first switching switch 14 or the second switching switch 16 according to a signal input from the outside.

The analog / digital converter 20 converts the image signal output through the first switch 14 or the second switch 16 into a standard digital signal, and converts the image signal into a high or low signal.

The modulator 22 modulates the digital signal output from the analog / digital converter 20 into a signal for transmitting to the telephone line 24, and modulates it by code division or time division.

The amplifier 26 amplifies the digital signal related to the image information received through the telephone line 24 to a predetermined voltage level, and restores the attenuation generated when transmitted through the telephone line 24 to its original state. It is to.

The photocoupler 28 converts the digital signal input from the amplifier 26 into an optical signal and transmits it, and then converts the digital signal into an electrical signal for driving the next connected circuit. The photocoupler 28 is composed of a photodiode 28a for converting an electrical signal into an optical signal, and a phototransistor 28b for receiving an optical signal generated by the photodiode 28ab and converting it into an electrical signal. .

The shift register 30 shifts and outputs the electrical signal received from the photocoupler 28 from the input order, and shifts the binary information from left to right. That is, the n-bit shift register 30 is composed of n flip-flops and gates for controlling the shift operation. The possible input / output methods in the shift register 30 may be used in parallel in four ways: serial input-serial output, serial input-parallel output, parallel input-parallel output, and parallel input-serial output.

The control unit 32 receives and outputs image information transmitted from the shift register 30 or outputs a control signal. The control unit 32 stores data relating to the image information input from the shift register 30. Control to be sequentially stored in the controller or to output image information stored in the storage means or to output a control signal for controlling the peripheral device.

The hard disk 34 is one of the storage means, and has a certain size. The hard disk 34 must have a capacity capable of storing an amount of information included in at least one video tape, a laser disk, or a floppy disk.

The digital / analog converter 36 converts the image information stored in the hard disk 34 into an analog signal by the control signal of the control unit 32, and outputs the video signal to a television 38 or a monitor for reproducing the video signal. will be.

The operation of the image information transceiving device according to the present invention configured as described above will be described in detail.

The tape or disc is driven by the driver 10 or the digital video decoder 12 in order to transmit image information such as a tape or a disc at the subscriber's request from a cable broadcasting station or a rental store. In this case, when the wire broadcasting station inputs a selection signal to the microcomputer 18 to select a tape or a disk that is being driven, the microcomputer 18 recognizes this and turns on or off the corresponding switching switches 14 and 16. That is, the image information driven by the driver 10 is output to the analog / digital converter 20 through the first switch 14, and the image information output from the digital video decoder 12 is the second switch 16 Is output to the analog / digital converter 20 through Alternatively, the microcomputer 18 may determine the operating states of the driver 10 and the digital video decoder 12 to switch the switching switches 14 and 16.

Image information output from the driver 10 or the digital video decoder 12 is input to the analog / digital converter 20 via the first switching switch 14 or the second switching switch 16, respectively, and the analog / digital converter. 20 converts an analog video signal into a standardized digital signal. The digitalized video signal converted by the analog / digital converter 20 is loaded on a carrier of a predetermined size, code-divided or time-divided by the modulator 22, and transmitted to the telephone line 24. At this time, the cable broadcasting station dials the subscriber's telephone number and then connects the subscriber's receiving terminal. In general, a cable broadcasting station transmits video information to a subscriber at night or at a time when a call volume is small. In addition, the cable broadcasting station compresses and transmits the image information to be transmitted so that a large amount of information can be transmitted in less time using the image compressor method.

At the subscriber side, the image information transmitted through the telephone line 24 is received by the amplifier 26 and amplified to a predetermined voltage level, and the signal amplified by the amplifier 26 is converted into an optical signal by the photocoupler 28. After the conversion, the signal is converted into an electrical signal and output to the shift register 30. Data relating to the image information input to the shift register 30 is shifted by the order based on the input order and output to the control unit 32. The controller 32 controls the hard disk 34 to store data input from the shift register 30. The hard disk 34 has a capacity for storing all the image information received from a cable broadcasting station or a rental store. When the image information corresponding to the entire amount of the tape or the disk is stored in the hard disk 34, the control unit ( 32 determines this and outputs a control signal for turning off the telephone line 24. At this time, the microcomputer 18 of the equipment installed in the cable broadcasting station or the rental store also outputs a control signal to turn off and disconnect the connected telephone line 24 when the transmission is completed. This operation can be easily recognized by those skilled in the art related to the present invention.

On the other hand, when the subscriber inputs the corresponding key through a separate key input unit in order to view the image information received by the hard disk 34, the control unit 32 recognizes this and the hard disk 34 is a digital / analog converter ( 36, the data stored in the hard disk 34 is converted into a video signal by the digital / analog converter 36 to output an image to a television 38, a monitor, or the like. At this time, the image information stored in the hard disk 34 can expect a higher quality image than when played back with a general VCR, a disc player, or the like, and there is almost no crosstalk or distortion of the image signal even if it is repeatedly played back several times. The image information stored in the hard disk 34 is erased when other image information is input from the cable broadcasting station or the rental store by the subscriber's request.

In addition, in the block diagram of FIG. 3 showing another embodiment of the present invention, a plurality of image information 44-46 output from the driver 10 and the digital video decoder 12 are connected in parallel to the telephone line 48. FIG. And a switching switch 41-43 for selecting each image information 44-46, and outputting a control signal through the switching switch 41-43 to connect each image information 44-46 to a telephone line. A controller 40 for feeding to 48 is provided. The image information is stored in advance in the storage means, and can store a plurality of image information 44-46.

This is because, when the plurality of image information 44-46 is manually switched between the respective switching switches 41-43, the control signal of the controller 40 causes each image information 44-46 to be connected in parallel to the telephone line 48. ) To be sent to the subscriber.

In this way, a wired broadcasting station or a rental store that transmits image information stores a plurality of image information, and then transmits the desired image information to the subscriber, thereby shortening the transmission / reception time.

As described above, the image information transmitting and receiving apparatus of the present invention transmits the image information recorded on the tape or disk from the cable broadcasting station or the rental store to the subscriber through a telephone line, and stores the received image information on the hard disk. It can be placed and watched at any time, so that subscribers can receive and view the desired image information at any time, and there is no separate installation cost, provide high quality images, and facilitate the rental of the image information, so as to facilitate the rental of image information. It has the effect of improving the confidence of.

Claims (2)

In the device for transmitting and receiving image information, A driver 10 and a digital video decoder 12 for driving a tape or disk to output an image signal; Switching switches 14 and 16 for switching image signals output from the driver 10 and the digital video decoder 12; A microcomputer 18 for controlling the switching of the switching switches 14 and 16, An analog / digital converter 20 for converting the image signal output through the switch 14, 16 into a standardized digital signal; A modulator 22 for modulating the digital signal output from the analog / digital converter 20 to the telephone line 24; An amplifier 26 for amplifying a digital signal about image information received through the telephone line 24 to a voltage level of a predetermined magnitude; A photocoupler 28 for converting the digital signal input from the amplifier 26 into an optical signal and transmitting the optical signal, and then converting the digital signal into an electrical signal for driving the next connected circuit; A shift register 30 for shifting and outputting the electrical signal received from the photocoupler 28 from an input order; A control unit 32 for receiving and outputting image information transmitted from the shift register 30 or outputting a control signal; A hard disk 34 storing image information input from the controller 32, A digital / analog converter (36) for converting the image information stored in the hard disk (34) into an analog signal and outputting the video signal to the television (38) by the control signal of the control unit (32). Information transceiver. 2. A plurality of image information 44-46 output from the driver 10 and the digital video decoder 12 are connected in parallel to the telephone line 48, and each image information 44-46. A controller 40 for connecting the switching switch 41-43 for selecting a signal, and outputting a control signal through the switching switch 41-43 to transmit each image information 44-46 to the telephone line 48; Image information transmitting and receiving device characterized in that the provided.