KR19990042647A - Special broadcasting recording control method of VSI system - Google Patents

Abstract

The present invention relates to a special broadcast recording control method of a VSI system, and in the related art, when a user records a sound broadcast and a stereo broadcast in such a system, the user can record in a reserved recording mode or the like. It was not desirable to have a means of automatically recording stereo broadcasts.

According to the present invention, the system checks whether a broadcast is received so as to improve the problems of the prior art as described above, and if the broadcast is received, recognizing a specific broadcast standby mode set by the user (step 101, 102); A method of controlling a special broadcast recording of a VSI system comprising checking a received broadcast and selecting whether the current channel is a stereo broadcast or a multicast broadcast, and automatically executing sound multicast recording and stereo recording (steps 103 to 107). To provide.

According to this, even if the user does not set a separate recording mode, there is an effect that can automatically record a stereo or audio broadcast.

Description

Special broadcasting recording control method of VSI system

The present invention relates to a special broadcast recording control method of a video cassette recorder (hereinafter referred to as VCR) system, which is particularly automatic when a currently received broadcast program is a sound broadcast or a stereo broadcast. As a result, the system performs recording to ensure that the recording of these rarely broadcast programs is not missed.

In general, voice multicasting (abbreviated as multicasting broadcasting) can be divided into stereo broadcasting and bilingual simultaneous broadcasting, and such multicasting broadcasting is performed by FM-FM system in Japan and Korea or West Germany. It can be distinguished from the two-carrier method which is carried out in the area and the AM-FM method which is carried out in the United States.

FIG. 1 shows an embodiment of a conventional reception system for a two-carrier sound broadcasting system of Korea or West Germany among various types of broadcasting systems.

In this case, only the frequency tuner 10 for tuning a desired channel from a high frequency (RF) signal of a complex channel received from an antenna and an intermediate frequency signal (SIF) for a voice signal are extracted from the channel signal tuned in the frequency tuner. The SIF detector 20 and the frequency signal of a predetermined band (4.5MHZ) among the intermediate frequency signals extracted by the SIF detector are filtered by the first band pass filter 31A to obtain 4.5MHZ as the first carrier and again 4.5. FM signal demodulated in MHZ (L + R) / 2 or main audio signal (FM) through FM demodulator 31B and then amplified again through amplifier 31C. It consists of a first carrier detection unit 31 for extraction.

In addition, the frequency signal of a predetermined band (4.72MHZ) of the intermediate frequency signal extracted by the SIF detector is filtered by a second band pass filter 32A to obtain 4.72MHZ, which is the second carrier, and then frequency-modulated to the 4.72MHZ. Second carrier detection for demodulating incoming voice signal (LR / 2) or sub-negative (foreign language) signal through FM demodulator 32B and then amplifying and extracting it again through amplifier 32C. After detecting the frequency signal of the predetermined band (55.1KHZ) by the third band pass filter (60A) from the signal filtered through the second carrier detection unit 32 and the second carrier detection unit through the AM demodulator (60B) A / D demodulation, pilot signal detection unit 60 for extracting a pilot signal amplitude-modulated at 55.1 KHZ, and stereo / dual switching for changing and outputting a switching control signal according to the pilot signal extracted from the pilot signal detection unit. Made up of wealth (50) Lost

In addition, the matrix circuit unit 40 for synthesizing the actual audio output signals of the L and R channels by switching or adding / subtracting the outputs of the two voice detectors according to the switching control signal of the stereo / dual switching unit 50. And a first audio output unit 71 and a second audio output unit 72 for amplifying the audio signal synthesized by the matrix circuit unit 40 and outputting the audio signal to the outside through each speaker.

The conventional voice multi-broadcast signal reception and processing circuit of such a configuration obtains a frequency signal of a desired channel by channel tuning a high frequency signal of a complex channel received from an antenna as a whole by the frequency tuning unit 10, and the channel signal is again detected by SIF. The intermediate frequency signal (SIF) for the audio signal is extracted while passing through the unit 20, and the intermediate frequency signal for the video signal is extracted through the VIF detector although not shown in the drawing.

As described above, the intermediate frequency signal SIF of the speech signal extracted by the SIF detector 20 is again the first band pass filter 31A and the second carrier detector 32 of the first carrier detector 31. FM signals are demodulated in respective FM demodulators 31B and 32B, respectively, after being filtered through signals of a predetermined frequency band (4.5MHZ or 4.72MHZ) while passing through the second band pass filter 32A. It is again amplified by a predetermined level through each of the amplifiers 31C and 32C, so that the first carrier detector 31 carries the frequency signal modulated on the first carrier 4.5MHZ as shown in FIG. 2 ((L + R). ) / 2) or main audio (Korean) signal is carried on the frequency carrier modulated by the second carrier detector 32 in the second carrier, 4.72 MHz, or (LR) / 2 or sub-negative (foreign language) signal. Are extracted and applied to the two input terminals of the matrix circuit section 40, respectively.

On the other hand, the pilot signal detector 60 is a predetermined band (55.1KHZ) in the third band pass filter 60A from the signal filtered through the second band pass filter 32A of the second carrier detector 32 After detecting the frequency signal of the demodulation through the AM (AM) demodulator 60B, the amplitude of the pilot signal that is carried along with the broadcast signal is extracted and applied to the stereo / dual switching unit 50, this stereo / The dual switching unit 50 changes and outputs the switching control signal according to the pilot signal extracted by the pilot signal detection unit.

Accordingly, the matrix circuit 40 can selectively output a single broadcast, a stereo broadcast, or a bilingual broadcast in accordance with the switching control signal of the stereo / dual switching unit.

The voice multi-mode and stereo mode are rarely broadcast among programs broadcast from broadcasting stations, and programs taking this type are utilized for movie video programs or large concerts.

However, in such a conventional system, in order to record such a special broadcast, the user has to set a recording mode by manual operation, which is annoying, and when the user does not know such a special broadcast, they often miss the program. .

An object of the present invention is to actively reduce the phenomenon that a user misses a specific broadcast program by allowing the system to automatically record when receiving a multicast broadcast from the system to improve the problems of the prior art as described above. It would be.

In order to achieve the above object, according to the present invention, the system checks whether a broadcast is received, and if a broadcast is received, recognizing if a specific broadcast standby mode is set by a user setting, and checking a broadcast to receive the current channel. The special broadcasting recording control method of the VSI system including the step of selecting whether the stereo broadcasting or the audio broadcasting, and automatically executing the audio broadcasting and the stereo recording.

1 is a view illustrating a conventional two-carrier audio and stereo broadcasting reception system

Circuit block diagram

2 is a reference diagram showing the shape of a sound multicast signal in FIG.

3 is a system circuit block diagram of the present invention.

Figure 4 is an embodiment of a special broadcast automatic recording control program according to the present invention

＊ Explanation of symbols on main part of drawing ＊

11: tuner and IF part 12: video processing

13: key input 14: microcomputer

15: audio processing Ishibu 16: deck

17: O'S d'Ivoire

100. Automatic broadcasting program for specific broadcasting

In more detail with reference to the accompanying drawings in the following will be understood more specific features of the present invention.

That is, Figure 3 shows an excerpt of the system main circuit block related to the present invention.

In this case, the tuner and IF unit 11 for tuning and IF processing the broadcast received from the antenna, and the video signal demodulated and demodulated in the demodulated or reproduced signal, are demodulated by the tuner and IF unit 11. The key input unit 13 for inputting various commands to the processing unit 12 and the microcomputer 14 which controls to select and record the broadcasts received from the tuner and the IF unit 11 to the deck unit 16. And microcomputer 14 and OSD 17 for system control.

In addition, the system includes a deck unit 16 driven under the control of the microcomputer 14, and an audio processing unit 15 for modulating the received sound broadcasting and the like into a recording signal.

On the other hand, the system is equipped with a specific broadcast recording control program 100 as shown in FIG.

In this case, the system checks whether a broadcast is received, and if a broadcast is received, recognizing a specific broadcast standby mode set by a user setting (steps 101 and 102), and if the broadcast is received by checking whether the received broadcast is a sound broadcast or not. Checks for tape insertion (steps 103, 104) and the like.

In the case of the above-mentioned sound multicasting, it is also checked whether there is a tape insertion, and when there is a tape insertion, recording a specific broadcast and stopping the recording tape when there is no specific broadcast reception (steps 105 to 107).

In the present invention having such a configuration, the user selects the sound recording mode through the key input unit 13 and the OS unit 17 as shown in FIG.

The OSD function menu screen at this time can be configured as follows.

Function Selection 1. Custom Clock 2. Reservation recording / cancellation 3. Channel Customization 4. Sound recording 5. Other Functions 1 to 5 Selection End of Function Selection

Therefore, when the user presses the key 4 and then presses the key, the recording mode is automatically set.

Thereafter, while the system is receiving the broadcast through the tuner and the I-F unit 11, the microcomputer 14 provides the deck unit 16 when the detection signal in the multi-mode mode is provided from the pilot detection unit of the system. ), And the video processor automatically records the modulated signals provided from the eye unit 12 and the audio processing unit 15 through the video / audio head.

On the other hand, such an operation is performed by the microcomputer 14 with the specific broadcast recording control program 100 as shown in FIG. 4. In this case, the system checks whether a broadcast is received. If a specific broadcast standby mode of user setting through the SD program or the like is set, it is recognized (steps 101 and 102).

After that, it checks whether the received broadcast is a sound broadcast, and if there is a sound broadcast, it checks whether there is a tape insertion.In the case of a sound broadcast, it checks whether there is a tape insertion again. If not, the recording tape is stopped (steps 103 to 107).

As described above, when recording a broadcast system in a VSI system having a sound broadcast reception function, the system can automatically detect and record it so that the user does not miss a special broadcast program, thereby ensuring the convenience of using the system. It is.

Claims (1)

In a BSA system having a voice multiple broadcast reception function, the system checks whether a broadcast is received, and if a broadcast is received, recognizing a specific broadcast standby mode set by a user setting (steps 101 and 102). Checking whether the broadcast is a sound broadcast or not, if there is a sound broadcast (step 103, 104), and if there is a sound broadcast, check whether there is a tape insertion, and if there is a tape broadcast, the specific broadcast is recorded and specified. Stopping the recording tape when there is no broadcast reception (steps 105 to 107).