KR960015831B1 - Time setting apparatus & method using broadcasting signal - Google Patents

Abstract

a tuner and demodulate means which synchronizes a broadcast signal, receives and demodulates it; a data sliding means sliding a tele-text data, among the output signal from the tuner and demodulate means, as a package unit; a tele-text process means converting the tele-text data from the data sliding means into a text and number data; a micom setting the current time from the text and number data outputted from the tele-text process means and controls the tele-text process means.

Description

Automatic time setting device and method using broadcast signal

1 is a block diagram of a conventional time setting device.

2 is a block diagram of a conventional time setting device using teletext.

3 is a block diagram showing an embodiment of an automatic time setting device according to the present invention.

4 is a flowchart showing an embodiment of an automatic time setting device according to the present invention.

5 is a block diagram showing another embodiment of the automatic time setting device according to the present invention.

6 is a flowchart showing another embodiment of the automatic time setting apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1, 15, 28: alphanumeric display portion 2: antenna

3: amplification and modulation section 4, 11, 27, 37: micom

12: Teletext Processor 13: Data Slicer

14, 21, 31: composite video video signal unit 16: memory

22, 32: data slicing unit 23, 33: clock oscillation unit

24, 34: data acquisition section 25, 35: data register section

26, 36: bus interface unit 39: VPS decoder

The present invention relates to an automatic time setting device and method for automatically setting a current time using a teletext and VPS broadcast signal in a VCR and a TV.

In general, the current time setting in a VCR or a TV is performed by using an OSD (On Screen Display) or an LCD (Liquid Crystal Display) remote control according to the user's control.

1 is a configuration diagram of a conventional time setting device.

The conventional time setting device is composed of an antenna 2, an amplifier and modulator 3, a microcomputer 4, and an alphanumeric display 1 as shown in FIG.

The antenna 2 receives all radio waves, and the amplification and demodulation unit 3 demodulates and demodulates the signal to the frequency of a specific broadcasting station received from the antenna 2 and simultaneously makes a pure digital signal at the microcomputer 4. Amplify it for recognition.

The microcomputer 4 reads the digital signal output from the amplification and demodulation unit 3, converts the digital signal into a time code and a date code, and converts it into a letter or a number.

The letter and number display unit 1 receives a signal output from the microcomputer 4 and displays it in letters or numbers.

When the current date and time are encoded and transmitted through a transmission antenna of a specific broadcasting station, the antenna 2 receives them.

The signal received at the antenna 2 is demodulated by the amplification and modulation section 3, converted into a digital signal, and then amplified and output to the microcomputer 4.

The signal output from the amplification and demodulation section 3 is made of a time code and a date code in the microcomputer 4 and displayed in letters or numbers.

2 is a block diagram of a time setting device using a conventional teletext.

As shown in FIG. 2, a conventional time setting device using teletext includes a microcomputer 11, a teletext processor 12, a data slicer 13, a composite video signal unit 14, a character and numeric display unit ( 15 and a memory 16.

The composite video signal unit 14 receives a signal transmitted from a broadcasting station and generates a signal having vertical and horizontal synchronization.

The data slicer 13 detects only teletext data which is a digital component of the composite video signal output from the composite video signal unit 14.

The teletext processor 12 functions to convert the output signal of the data slicer 13 into letters and numbers, and the memory 16 stores text and numeric signals output from the teletext processor 12. .

The microcomputer 11 receives a signal from the teletext processor 12 to find a current time and date portion, and the character and number display unit 15 displays data output from the microcomputer 11.

The signal transmitted from the broadcasting station is received by the composite video signal unit 14, is made of a signal having vertical and horizontal synchronization, and is output to the data slicer 13.

The composite image signal output from the composite image video signal unit 14 detects only teletext data, which is a digital component, from the data slicer 13 and outputs it to the teletext processor 12.

The signal output from the data slicer 13 is converted into letters and numbers in the teletext processor 12 and stored in the memory 16.

The teletext processor 12 is interfaced with the microcomputer 11 to receive a command of the microcomputer 11 and read data corresponding thereto from the memory 16 and output the data to the microcomputer 11.

The signal output from the teletext processor 12 detects a portion representing the current time and date in the microcomputer 11 and displays it in letters and numbers through the letter and number display unit 15.

However, in the conventional time setting device, since the transmission frequency of a specific broadcasting station providing only time information is only a few tens of KHz, the sensitivity of the frequency is poor. Therefore, according to the place and surrounding environment mainly in a TV or VCR installed indoors, Many constraints follow, and there is a problem in that a separate antenna capable of receiving a specific frequency in a TV or VCR is required.

In addition, the conventional apparatus for setting a time using teletext has a problem of embedding teletext in a TV or a VCR.

An object of the present invention is to provide an apparatus and method for automatically setting a time using a broadcast signal to automatically set a current time in an area where a teletext or VPS (Video Programmable System) broadcast is received. .

A feature of the automatic time setting device using the broadcast signal according to the present invention for achieving the above object is a tuner and an auxiliary means for receiving and demodulating in synchronization with the broadcast signal, and the teletext data among the signals output from the tuner and the demodulation means. Data slicing means for slicing the data into package units, teletext processing means for converting teletext data output from the data slicing means into character and numeric data, and controlling the teletext processing means from the teletext processing means. It consists of a microcomputer that sets the current time from the output character and numeric data.

In addition, a feature of the automatic time setting device using a broadcast signal according to the present invention, the teletext data processing step of slicing the received teletext data in package units, and teletext for storing the sliced teletext data in package units And a current time setting step of setting a current time using the stored teletext data.

In addition, a feature of the automatic time setting method using a broadcast signal according to the present invention comprises the steps of: transmitting a control signal and storing sliced data to receive broadcast signal data; And searching for whether the data is text data, and searching whether the data in a predetermined sequence of the read data bytes is a broadcasting station code indicating a date and time and setting the date and time.

Hereinafter, preferred embodiments of the automatic time setting apparatus and method using a broadcast signal according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram showing an embodiment of the automatic time setting device according to the present invention.

As shown in FIG. 3, an apparatus for automatically setting a time according to the present invention includes a composite video signal unit 21, a data slicing unit 22, a teletext data acquisition unit 24, and a data register unit (shown in FIG. 25), a clock oscillation unit 23, a bus interface unit 26, a microcomputer 27, and an alphanumeric display unit 28.

The composite video video signal unit 21 functions to make an input broadcast signal into a signal including vertical and horizontal synchronization.

The data slicing unit 22 detects only a digital signal from the composite video signal output from the composite video signal unit 21.

The clock oscillator 23 generates a clock signal according to the control of the microcomputer 27 and functions to synchronize synchronization so that accurate slicing of the input signal is performed.

The teletext data acquisition unit 24 functions to convert digital components of the sliced signal output from the data slicing unit 22 into letters and numbers.

The data register section 25 stores data output from the teletext data acquisition section 24.

The bus interface unit 26 is connected to the microcomputer 37 by an IIC bus, receives a command output from the microcomputer 27 through a bus, and reads a corresponding data value from the data register unit 25. It functions as an interface for transferring to the microcomputer 27.

The microcomputer 27 reads information about the current time and date from the bus interface 26 through the bus, processes the information, and outputs the processed information to the alphanumeric display 28.

The alphanumeric display unit 28 displays alphanumeric data output from the microcomputer 27.

Therefore, the input broadcast signal is made of a signal including vertical and horizontal synchronization in the composite video signal unit 21 and output to the data slicing unit 23.

In the signal output from the composite video signal unit 21, only the teletext signal, which is a digital signal, is detected by the data slicing unit 22 in accordance with the synchronization signal output from the clock oscillator 23. Is output to (24).

The signal output from the data slicing unit 22 is converted into letters and numbers in the teletext data acquisition unit 24 and then stored in the data register unit 25. The microcom 27 is the clock oscillation unit 23. The acquisition clock is changed to detect information about teletext in the 16th line of the composite video video signal through the data slicing unit 22 and stored in the data register unit 25.

Information about the current time stored in the data register unit 25 is output to the microcomputer 27 through the bus interface 27 under the control of the microcomputer 27.

The information output to the microcomputer 27 is displayed in letters and numbers through the letter and number display unit 28.

Therefore, in one embodiment of the automatic time setting device according to the present invention, the automatic time setting is possible in the area where the teletext broadcasting information is received.

4 is a flowchart showing an embodiment of the automatic time setting device according to the present invention, which can be implemented by the automatic time setting device shown in FIG.

First, the system is initialized to create an environment for receiving teletext signals. That is, the microcomputer transmits the control signal through the IIC bus and resets the frame counter according to the teletext acquisition unit (40, 41).

When the reception of the teletext signal is received and the reception is completed, the received data is stored in the data register unit and the data stored in the data register unit is read through the micom IIC bus (43, 44).

The microcomputer uses the read data to correct the time with the first and second data, sets the minutes with the fourth and fifth data, and sets the seconds with the seventh and eighth data to set the current time. (45).

After setting the time as described above, the microcomputer transmits a control signal through the IIC bus to match the teletext data acquisition unit with the VPS in the teletext broadcasting information and receives the VPS signals (46 and 47).

Accordingly, when reception of the VPS signal is completed, the month and the date are set using the received VPS data (48).

5 is a block diagram showing another embodiment of the automatic time setting device according to the present invention.

Another embodiment of the automatic time setting device according to the present invention is configured by further including a VPS decoder 39 in one embodiment of the automatic time setting device as shown in FIG.

That is, it is connected to the bus connecting the composite video signal unit 31, the bus interface unit 36 and the microcomputer 37, and stores information on the VPS on the 16th line of the composite video video signal. 39) is further included in an embodiment of the automatic time setting device.

The input broadcast signal is made of a signal including vertical and horizontal synchronization in the composite video signal unit 31, and then is matched with a synchronization signal output from the clock oscillator 33 by the data slicing unit 34 and then the microcomputer 37. Only the teletext signal, which is a digital signal, is detected according to the control signal.

The digital signal output from the data slicing unit 32 is converted into a letter or a number in the data acquisition unit 34 and then stored in the data register unit 35.

The composite image signal output from the composite image video signal unit 31 is detected and stored only by the VPS decoder 39 about the VPS corresponding to the 16th line of the composite image signal.

The data stored in the data register unit 35 is transferred to the microcomputer 37 via a bus according to the command of the microcomputer 37 through the bus interface unit 36, and input to the microcomputer 37 stored in the VPS decoder 39. The VPS data of the broadcast signal is transmitted to the micom 37, and the VPS data of the input broadcast signal stored in the VPS decoder 39 is transmitted through the bus according to the command of the micom 37. Is passed to.

The microcomputer 37 reads information on the current time and date input through the VPS decoder 39 and the bus interface 36 and displays the information in letters and numbers through the alphanumeric display 38.

That is, the VPS signal is used to set the date and month and the teletext signal is used to set the hour, minute and second.

6 is a flowchart showing another embodiment of the automatic time setting method according to the present invention, which can be implemented by the automatic time setting device shown in FIG.

The control signal for a command that the microcomputer reads the data is transmitted through the IIC bus, and the sliced data is latched (50, 51).

When the latched data is read through the IIC bus and data reading is completed, it is searched whether the data to be read is the format 1 of the teletext packet 8/30 indicating data according to time (52, 53, 54).

If the read data is not the format 1 of the teletext packet 8/30, the process proceeds to step 50 of transmitting data corresponding to the control signal for latching the format 1 data of the teletext packet 8/30 and transmitting the control signal ( 55).

If the read data is the format 1 of the teletext packet 8/30, the search is performed until the total number of read data bytes is 13 (56).

When the total number of data bytes read is thirteen, it is determined whether the thirteenth / 14th data of the data bytes read are BBC1 broadcasting station codes (57).

If the 13 / 14th data of the read data byte is not the BBC1 broadcasting station code, the latched data is read from step 52. If the 13 / 14th data of the reading data byte is the BBC1 broadcasting station code, the date and time are set using the read data. (58, 59).

That is, the fourth low 4 bits of the read data, the fifth and sixth data of the data byte are Julian data, and the date is set accordingly, and the seventh data of the read data byte is the hour, eighth data. Is the minute and the ninth data is seconds, so this is the time.

The present invention configured and operated as described above has the effect of automatically setting the time in an area where teletext, VPS and PDC broadcasts are received.

Claims (6)

Tuner and auxiliary means for receiving and demodulating in synchronization with a broadcast signal; Data slicing means for slicing teletext data in package units among signals output from the tuner and the demodulation means; Teletext processing means for converting teletext data output from said data slicing means into character and numeric data; And a microcomputer for controlling the teletext processing means and setting a current time from the character and numeric data output from the teletext processing means. The apparatus of claim 1, further comprising a VPS decoding unit configured to store information about the VPS from the signals output from the tuner and the demodulation unit and output the information to the microcomputer. A teletext data processing step of slicing received teletext data in package units; A teletext data storage step of storing the sliced teletext data in a package unit; And a present time setting step of setting a present time using the stored teletext data. Transmitting control signals and storing sliced data to receive broadcast signal data; Reading the stored data and retrieving whether it is teletext data of predetermined bytes; And setting the date and time by searching whether the data in the predetermined sequence of the read data byte is a broadcasting station code indicating a date and time. The method of claim 4, wherein the reading of the stored data and retrieving whether it is teletext data consisting of predetermined bytes includes reading the stored data, retrieving whether the read data and the teletext data are read, and the data read as a result of the retrieval. If the data is not data, the process proceeds to a step of transmitting a control signal for receiving data, and if the data read as a result of the search is a teletext data, the broadcast is performed by searching until the read data becomes a predetermined byte. Automatic time setting device using signal. The method according to claim 4, wherein the step of setting the date and time by searching whether the data in the predetermined order of the read data byte is a broadcasting station code indicating a date and time is performed. And retrieving whether the data of the predetermined sequence of data bytes read from the search result is a broadcasting station code indicating a date and time, and searching whether the stored data is read as a predetermined byte of teletext data. And setting the date and time using the read data if the data in a predetermined sequence of data bytes is a broadcasting station code indicating the date and time.