KR0177054B1 - Kbps channel conversion method in one's absence in vcr with character broadcasting signal receiving mode - Google Patents

Abstract

The present invention relates to a processing means for receiving and using KBPS data in a VSI system having a KBPS character broadcasting reception function. An object of the present invention is to provide KBPS data of all broadcasting stations broadcasting when a BCD user is absent. The present invention provides a method for receiving missed KBPS channel switching reception in VSI having a text broadcasting reception function for automatic reception.

A feature of the present invention for achieving the above object is to determine whether or not the KB PS code is received by the VSI standby tuner to switch on the VSI power when receiving the KB PS code, and after receiving the broadcast broadcast VSI Reading the code from the KVP of the first channel in the means and receiving the KVPS time and program data; and performing auto channel search after the step to determine the presence or absence of the KVPS code of the searched channel; If the KPS code exists, repeating the process of receiving the KPS data, and if there is no KBP code in the searched channel to determine whether the waiting time has exceeded the set time, and in the step KKPS within the set time When the code data comes in, execute the previous Auto Channel Search step. When the set time has elapsed, and turning off the power and sialic V comprises the steps of waiting for the next KB PS code detection.

Description

Missed KBP channel switching reception processing method in VSI with character broadcasting reception function

The present invention relates to a processing means for receiving and using KBPS data in a VSI system having a KBPS character broadcasting reception function. In particular, the present invention can automatically receive KBPS data of all broadcasting stations that are broadcasting when a BCD user is absent. The present invention relates to a KBS channel switching reception processing method in VSI having a Chinese character broadcasting reception function.

Character broadcasting is basically a representation of text or picture data reconstructed from coded data on the screen of a television receiver properly equipped for the broadcasting service of digital data transmitted in the structure of an analog signal or by using a digital modulation system. Intended.

Although the character broadcasting system uses the field blanking interval of the horizontal synchronization signal in the current television signal in most cases, there are various options for extending the data broadcasting service to occupy all the effective scanning lines in the television signal. .

In such a system, the form of data lines, data units, data packets, and the like on the back porch of the horizontal synchronization signal of the television is shown in FIG.

In Fig. 3A, A is a line synchronization signal, B is a color burst, C is bit synchronization, and D is a data line.

In FIG. 3B, E denotes byte synchronization and F denotes data units. In FIG. 3C, G denotes a prefix, H denotes a data block, J denotes a data packet, and K denotes an adaptable value. It is used as a suffix signal.

In addition, such a character broadcasting system is used by a large number of developed countries such as West Germany, Japan, the United States, France, and the United Kingdom as well as Korea, and they use scan lines and frequencies (for example, 625/50, 525/60) for each country. There are several different types of text broadcasting systems.

On the other hand, Korean character broadcasting is designed to insert various KBPS signal data into the back porch side of the horizontal synchronization section of the video signal using the various information.

For example, the KBPS signal is information such as a program provided by the broadcasting station side formed as shown in FIG. 4, which is a signal form multiplexed and allocated to a horizontal scan line signal of a video signal, wherein the clock and byte synchronization unit, It includes a data header part, a data block, and the like, and one word is formed in units of 8 bits (1 byte).

In addition, the contents included in the KBPS data include current time data, start time of one week program, length, title, day map, corresponding code, broadcasting station name, currently broadcasting code name, and the like.

In this type of KBP signal, the prior art relatively related to the present invention is known a type that can process a simple reservation recording in the VSI system using the KBP signal, so-called K reservation recording An example of the VSI system utilized as a means is shown as FIG.

Here, the microprocessor 31 for controlling the VSI system, the servo circuit 32 for driving control of a motor on the system deck side, the remote control receiver 33b and the set side connected wirelessly to the remote control transmitter 33c. The recording signal is taped from a timer circuit 33 to which the key portion 33b is connected, an audio circuit 35 for processing a reproduction or audio recording signal in the system, and an RF signal provided from the tuner and the IF unit 38. A video circuit 37 provided on the side or processing a reproduced video signal or the like, a DMSS unit 36 controlling the system deck side to provide an audio signal in a normal state during double speed playback, Kaby decodes data such as characters and graphics such as PS, and displays characters, graphics on various screens, and character display on menu screens for function selection. And S 34, the sync signal received from the antenna and consists of a tuner and children F unit 38 for generating a signal of an intermediate frequency, a power circuit 39, such as providing power to the system.

The different KP PS 34 has the configuration as shown in FIG.

Here, the first switch 34b for connecting the antenna-side signals provided from the tuner and the I-F unit 38 to the buffers 34c and 34j and the RF signal output from the buffer 34c side are received as synchronization signals. A data separator 34e for detecting KB PS data from the composite synchronous signal provided from the synchronous separation Ish 34d, and a KB PS data, and decoding the contents of the data. A program that processes and provides an on-screen display (OSD) signal to the second switch 34k, and a program that stores various program contents processed by the KBPS decoder 34a. The A / D (Analog / Digital) converter 34i is provided with the OSD signal provided from the ROM 34g, the system RAM 34f, the character font trom 34h, and the second switch 34k. Video of Sial System A switch IC 34L for outputting a video signal to an output terminal, an AD converter 34i for converting an analog signal supplied from the switch IC 34L into a digital signal and providing it to the KBPS decoder 34a, and an input signal. It consists of a configuration including a low pass filter (34m) for.

A conventional system that enables reservation recording using such a signal in a VSI system having a KBPS data receiving function is introduced in Korean Patent Publication No. 94-16194.

According to this prior art, when a user inputs a program identifier written on a newspaper or the like as reserved recording data, the system checks whether the reserved recording is set as shown in FIG. 5, and if the system microprocessor checks that the reserved recording is set, the reserved recording is executed. It checks whether it is in progress, and extracts the identification code so that the reservation recording is made or terminated based on the start time, length, title, etc. of the program provided by the KBP signal data. This is called K recording method.

In the conventional recording of a broadcast program using a KBPS signal using the conventional KBPS signal, only the preset program receives the KBPS code data of the corresponding channel, turns on the VSI, and then records a specific broadcast program. . Therefore, in order to receive the K-BPS code of all channels with broadcasts, it is impossible to receive the K-B-PS code over all the missed channels because it is necessary to manually switch all the broadcasting channels one by one.

Disclosure of Invention An object of the present invention is to provide a method for receiving missed KBPS channel switching reception in VSI having a character broadcasting reception function, which enables automatic reception of KBPS data of all broadcasting channels when a user is absent. .

1 is an overall circuit block diagram of VSI with a general text broadcasting reception function.

FIG. 2 is a detailed circuit block diagram of a KBPS decoder in FIG. 1.

3A to 3C are reference diagrams of television signals related to text broadcasting.

4 is a reference diagram showing a conventional broadcasting station-side KBPS transmission signal type.

5 is a flowchart illustrating a conventional recording process according to the KBPS program identifier in FIG.

Figure 6 is a circuit block diagram for the automatic reception of absence KPS data according to the present invention.

7 is a flowchart illustrating a KBPS data receiving process of the present invention.

* Explanation of symbols for main parts of the drawings

1: Absence reception processing program 21: Main power supply unit

22: relay unit 23: system circuit

31 microprocessor 34: KB PS decoder

38 tuner section

A feature of the present invention for achieving the above object is to determine whether or not the KB PS code is received by the VSI standby tuner to switch on the VSI power when receiving the KB PS code, and after receiving the broadcast broadcast VSI Reading the code from the KVP of the first channel in the means and receiving the KVPS time and program data; and performing auto channel search after the step to determine the presence or absence of the KVPS code of the searched channel; If the KPS code exists, repeating the process of receiving the KPS data, and if there is no KBP code in the searched channel to determine whether the waiting time has exceeded the set time, and in the step KKPS within the set time When the code data comes in, execute the previous Auto Channel Search step. When the set time has elapsed, and turning off the power and sialic V comprises the steps of waiting for the next KB PS code detection.

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

6 is a circuit block diagram of a time signal system using a KBPS broadcast signal provided in a VSI for implementing the present invention.

As referred to herein, the present invention is connected between the main power supply unit 21 and the system circuit 23 of the VSI, when there is a signal provided from the KB PS decoder unit 34 other than the standby power (ST) The relay unit 22, which provides the driving power to the system circuit 23, and the relay unit 22 controls the drive when there is a KP PS information signal received from the KP PS decoder unit 34, and performs the K BPS of a specific broadcast. After receiving, the system microprocessor 31 automatically switches to another channel to receive the KB PS signal, the KBPS decoder unit 34 connected to the microprocessor 31 to provide KBPS data, and the KBK signal. The tuner unit 38 is connected to the PS decoder unit 34 and is operated by a standby power supply ST or the like.

The microprocessor is a processing step of turning on the drive power of the system circuit when the KB PS code is received in the VSI, and processing step of automatically receiving and processing the KBPS information of all broadcasting stations after the drive power is supplied to the system circuit. The missed channel switching reception processing program 1 including a is provided.

The missed channel switching processing program 1 has a processing level as shown in FIG. 7 in more detail.

In this case, it is checked whether the KPS signal is received from the system from the start step (step 101). When the KBP signal is detected, the drive power (power) of the system circuit 23 is turned on (step 102).

The system processor then reads the KPS code through the KVPS decoder 38 (step 103), reads the KPS data again (step 104), and checks whether all KPS data of the predetermined broadcast has been received (step 105). When the reception is completed, go to the auto search mode and automatically switch to another channel (step 106). If the reception is not completed, go to step 103.

Then, it is checked whether there is a KPS code while switching to another channel (step 107), and it is checked whether the predetermined time X (e.g. 20 minutes) stored in the system register is larger than the reception time T (step 108). When T is larger than X, the power is turned off, and when smaller, the process goes to step 103.

In the present invention, when the user is absent, the operating power of the VSI is turned off, that is, in the standby state from the main power supply unit 21 to the tuner unit 38 of the system circuit 23 through the standby power supply ST. When there is a broadcast of a broadcasting station signal including a KPS signal, the tuner unit 38 receives a predetermined broadcasting station signal, and when the broadcasting signal contains the KPS signal, the KPS processor decoder 38 receives the KTV signal. The PS code is detected and provided to the system microprocessor 31.

When the system microprocessor 31 receives the KPS code from the KPS decoder 38, the system microprocessor 31 drives the relay unit 22 connected to the main power supply unit 21 to switch on the power to the VSI system circuit 23. Will be done.

Therefore, VSI will receive the KBPS data transmitted from the broadcasting station of the selected channel at that time.

In this operation, when the reception of a predetermined broadcast station, i.e., K-BPS data of a predetermined channel, is automatically switched to the next channel by the auto search method, and when there is a K-BPS code in the broadcast signal of the switched channel, The necessary processing work will be performed.

On the other hand, the KBPS signal is multiplexed and allocated to the video signal received through the tuner unit 38 by the horizontal scan line signal of the video signal. The KBP signal is a clock and byte synchronizer, a data header part, and a data block. The contents included in KBPS data include current time data, start time of one week program, length, title, day map, corresponding code, station name, currently broadcasting code name, etc. Since the stock price information, travel information (train time, flight time, express bus time), weather information, sports information, and the like are stored, the KPS processor decoder 34 decodes such information and converts the information necessary for the system into a microprocessor ( 31) and so on.

The microprocessor 31, if the system is currently memorizing the reservation recording by the K or the like method is to perform the reservation recording by retrieving the corresponding information from the KB PS.

In addition, the above processing is performed by the system processor together with the missed channel switching reception processing program 1 of FIG. 7, which is to determine whether the VSI system is receiving the KBPS code from the system, and thus the KBPS code. When is detected, the drive power (power) of the system circuit 23 is turned on, and when it is not received, it ends (steps 101 to 102).

After that, the system processor reads the KPS code through the KVPS decoder 38, reads the KPS data again, checks whether all KPS data of the predetermined broadcast has been received, and when the reception is completed, goes to the auto search mode and automatically. Switching to another channel is performed (steps 103 to 106).

After switching to another channel, it is checked whether there is a KPS code, and if the predetermined reference time X stored in the system register is larger than the reception time T, the power is turned off and the standby time is greater than X. It goes to a state (step 107-step 109).

As described above, the present invention brings a unique effect of receiving all K-BPS data of a channel having a broadcast in a series of operations even if the V-SIAL user is absent in the VSI with the KB-P receiving function.

Claims (1)

A method for receiving KB PS data in a VSI, comprising: determining whether a KB PS code is received by a tuner in a VSI standby state and switching on a VSI power upon receiving a BCS code, and after the VSI power on Receiving the KB PS time and program data by reading the code from the KVP of the first channel by the broadcast receiving means, and performing auto channel search after the step to determine the presence or absence of the KPS code of the searched channel; If there is a KB PS code in the channel, repeating the process of receiving KB PS data, and if there is no KB PS code in the searched channel, determining whether the waiting time has exceeded the setting time; Auto channel in front of KB PS code data Executing the search step and turning off the VSI power when the set time has elapsed, and waiting for the next KB PS code detection. Treatment method.