KR19990023305U - VSI System with Channel Limit Control - Google Patents

Abstract

The present invention relates to a VSI system having a channel restriction control function, and in the related art, a set user has been devised to prohibit the use of a set by a minor or a third party in such a system. There was no way to restrict viewing, which was not desirable.

The present invention is connected to an output port of the microcomputer 11 of the system so as to improve such a conventional problem, the tuner unit 14 to perform a tuning operation, and the output of the tuner unit 14 is connected to the audio A / V block unit 15 for processing the video / video signal, a switching unit 16 which outputs or cuts a video / audio signal to the rear stage after the AB is connected to the output of the block unit 15, and a key input unit 11 of the system. Microcomputer 12 which controls to turn off the switching unit 16 when there is a channel off encryption setting and controls the encryption setting and release operation through the key input unit 11 and the OS unit 13; It is to provide a VSI system having a channel restriction control function including the SD unit 11 and the key input unit (11).

Description

VSI System with Channel Limit Control

The present invention relates to a VSI system having a channel restriction control function, which is a more reliable third party restriction function by controlling the on / off channel of a broadcast signal, especially when prohibiting the use of a VSI set by a third party in such a system. You can do this.

The VSI system is a device that receives various video / audio sources and records them on a cassette tape or plays back a recorded pro. A typical form thereof is shown in a system circuit block diagram as shown in FIG.

Here, the tuner 34 which receives the regular broadcast signal from the antenna 33 of the VSI system and performs channel tuning, and performs phase locked loop (PLL) control on the tuning signal provided by the tuner 34. And a phase lock loop circuit 35, a microcomputer 32 for controlling the VSI system, and the like.

In addition, the system includes an OSD unit 41 for generating an OSD screen, a VSI system memory 43, a deck 36 for recording / playback deck operation, a key input unit 31, and an RF converter. 38 and the like, on the other hand, the video processing circuit 39 of the video signal processing, an external TV receiver 40, a remote control transmitter 42, a remote control receiver 37 and the like are constituted.

In the above system, when the function key is pressed through the remote control transmitter 42, the microcomputer 32 generates the OSD menu screen through the OSD 41, which is a screen interactive mode through the TV receiver 40. It was to perform a function setting operation.

On the other hand, conventionally, a variety of methods are known to prevent minors from watching the adult program in the above system, one of which is known in Korean Patent Publication No. 3669 (Patent No. 94-5846).

In this case, a bar code sticker that codes reservation recording information is attached to one side of the video cassette tape to complete the setting of the reservation recording program along with the insertion of the cassette tape, while attaching a bar code sticker for children / adults. It was designed to prevent children from seeing adult tapes.

In other words, in this technology, when a cassette tape with a bar code sticker marked with bar code information is inserted into the system, the bar code sensor installed on the system deck reads the bar code sticker contents. In case of timer reservation data, it saves it to memory and displays reservation contents as OSD character. If read barcode data is children / adult classification data, it is performing lock function and if playback is not possible for adult and barcode recognition, playback is not performed. It was made as a means of performing a process that does not.

In addition, another conventional technique is known in Korea Patent Publication No. 3769, Publication No. 94-9466, which displays a certain color on the tape label, and in the form of controlling the stop key by distinguishing the color of the label in the system It is done.

However, in such a system, a means for controlling the driving of the system to prevent the viewing of a third party or a minor is required. However, a means such as prohibiting the viewing of a third party of a broadcast signal, such as a paying broadcasting channel, has not been devised. .

The purpose of the present invention is to improve the problems as described above, the system can selectively block the signal such as the received wired broadcasting when there is an encryption setting by the user, so that the user more effectively watching paid broadcasts by third parties, etc. It is to be prohibited.

In particular, the present invention provides a tuner unit connected to an output port of a microcomputer of the system to perform a tuning operation, and an AV block unit connected to an output port of the tuner unit to process an audio / video signal. This AVB is connected to the output of the block part, and the switching part outputs or cuts off the video / audio signal to the rear part, and if the channel off encryption setting is made by the key input part of the system, the switching part is controlled to be turned off, and the encryption part is performed through the key input part and the OS part part. And a microcomputer for controlling the setting and releasing operation, and a VSI system having a channel limiting control function including an OSD part and a key input part.

Hereinafter, more specific features of the present invention will be understood by describing the same in detail with the accompanying drawings.

1 is a VSI having a typical On Screen Display (OSD) function

Circuit block diagram of the (VCR; Video Cassette Recorder) system

2 is a system circuit block diagram of the present invention

3 is an embodiment of an encryption control program of the present invention

** Explanation of symbols on the main parts of the drawing **

11.Key Input 12.Microcomputer

13. OS D. 14. Tuner

15. AV block section 16. Switching section

100. Encryption Control Program

The main circuit block diagram of the VSI system having the channel limiting function according to the present invention is shown in FIG. 2.

Here, a tuner unit 14 connected to an output port of the microcomputer 11 of the system and performing tuning work, and an AV block unit 15 connected to an output of the tuner unit 14 and processing audio / video signals are provided. ) And a switching unit 16 for outputting or blocking a video / audio signal to the rear end of the block unit 15 is provided.

In addition, if there is a channel off encryption setting by the key input unit 11 of the system, the switching unit 16 is controlled to be turned off, and the encryption setting and release operation is controlled through the key input unit 11 and the OS unit 13. Microcomputer 12, an OSD unit 11 for generating a signal for displaying a screen at the time of password setting and unlocking operation, and a key input unit 11 for inputting various commands.

According to the present invention of this configuration, as shown in FIG. 2, the user calls up the encryption setting / release screen through the key input unit 11 to perform the channel limit control function of the VSI system.

In this case, when the user presses a function key of the key input unit 11, the screen shown in Table 1 is output.

Function Selection 1. Custom Clock 2. Reservation recording / cancellation 3. Channel Customization 4. Tape Selection (Tape Remaining Time) 5. Channel Lock / Off 1 to 5 Selection Function End

When the user presses 5, the screen shown in Table 2 appears, and the user enters or releases the channel lock password through this screen.

4 digits of channel lock password ■ □□□□ ← → Move cursor ↑ ↓ End of number setting Enter key

Therefore, the user can move the left / right by using the volume control up / down keys, select the number with the channel up / down keys where the cursor is, and perform the setting operation with the enter key.

When the channel set lock is locked in this way, the broadcast signal inputted from the reception system of the system cannot be transferred to the rear end of the switching unit 16, thereby making broadcast reception impossible.

In this case, when the microcomputer 12 recognizes that the channel lock mode is selected and a channel is selected by the key input unit 11 of the set, the microcomputer 12 sets the output of the switching unit 16 to the pointed side so that the tuner unit ( 14) and the audio / video signal processed from the audio / video block unit 15 cannot be connected to the rear end so that reception is impossible.

In addition, when the user releases the channel lock in the system or the channel is tuned by a third party, the system outputs the screen shown in Table 3 below.

Enter the password to unlock the channel.Enter the password: * * * * Enter

Therefore, when the user releases the password through the screen, the channel lock is released. When the third party does not know the password, the user cannot use the system because the channel lock cannot be released as described above.

On the other hand, the above operation is performed by the microcomputer 12 together with the encryption control program 100 of FIG. 3, which checks whether the system recognizes a channel input and checks whether the system has a password (password) and has a password. In the case of a channel, the password input OSD message shown in Table 3 is output (steps 101 to 103).

After that, when the password is correct, the system generates an output for controlling the switching unit 16 to provide the channel signal to the rear stage (steps 104 and 105).

The present invention has an effect of actively preventing unnecessary viewing by a third party because the user can freely channel-lock channels such as pay-TV in the VSI system having an OSD function.

Claims (1)

In a VSI system including a system microcomputer, an OSD unit, and the like, a tuner unit 14 connected to an output port of the microcomputer 11 and performing a tuning operation is connected to an output of the tuner unit 14. An AV block unit 15 for processing an audio / video signal, a switching unit 16 for outputting or blocking a video / audio signal to a rear end of the AV block from the output of the block unit 15, and a key input unit of the system The microcomputer 12 which controls to turn off the switching unit 16 if there is a channel off encryption setting by 11 and controls the encryption setting and release operation through the key input unit 11 and the OS unit 13; And VSI system having a channel limit control function characterized by a configuration including an OS 11 and a key input unit 11, etc.