KR950014856B1 - Automatic time setting and correction system of receiver - Google Patents

Abstract

a transmitting unit for transmitting broadcasting signals; and a receiving unit which receives the broadcasting signals and has a decoder unit for decoding the broadcasting station time information contained in the broadcasting signals and generating a broadcasting station time, a receiver time generating unit for generating a receiver time; an initial state determining unit for determining if the receiver time is of an initial state and generating an intial state confirming signal, and a unit for changing the receiver time to the broadcasting station time in response to the initial state confirming signal.

Description

Receiver time automatic setting, correction system and method

1 is a diagram showing a format of visual information data included in a broadcast signal.

2 is a schematic block diagram showing a receiver automatic time correction system according to the present invention.

FIG. 3 is a flowchart for explaining the operation of the control means shown in FIG.

4 is a functional block diagram of a receiver automatic time setting system according to the present invention.

5 is a functional block diagram of an automatic receiver time correction system according to the present invention.

6 is a functional block diagram of an automatic receiver time setting and correction system according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Tuner 2: Video Intermediate Frequency (PIF) Circuit

3: video circuit 4: decoder

5 control means (μ-COM) 6 display device

7: key matrix circuit 10: transmitter

20: receiver 25, 35, 45: receiver time generating means

26,47: initial state determination means 36,46: correction time determination means

27,37,49: means of change 37,48: means of comparison

The present invention is, for example, for automatically setting and / or correcting the time of an electronic clock attached to a receiver, for example, a video tape recorder (VTR), by using time information contained in a composite video signal transmitted from a television station. System and method.

In the case of an electronic clock currently used in a receiver such as a VTR, when the power cord is unplugged or a power failure occurs, the watch returns to its original state (when the power failure compensation time has elapsed). Since no time is displayed, the receiver user must always set the time by manual operation, and the user is annoyed.

In addition, since the time displayed on the receiver may differ from the actual time due to its own error, for example, due to inaccuracy of the clock circuit, in such a case, the displayed time is actually changed by manual operation. This is followed by inconveniences that must be set in time.

Under such a reality, the present inventors have devised a method for this, and in the case of the current European region, the television station side has predetermined information, for example, a predetermined program by the 16th data line existing within the vertical return period of the composite video signal. By transmitting the specific time information on the program together, it has been found that even if the transmission time of the program is changed, the VTR can visually terminate the recording of the program at the correct time.

Therefore, the present inventors have made it possible to automatically set the time setting and time correction by using such time information on the receiver side, such as a VTR, if the TV broadcasting station sends time information in the future. I thought I could.

Accordingly, an object of the present invention is an automatic receiver time setting system that transmits time information from a broadcasting station side such as a television station, and automatically sets the time of the electronic clock using such time information on a receiver side such as a VTR. And to provide a method.

It is still another object of the present invention to transmit time information from a broadcasting station side such as a television station, and to use the time information on the receiving side such as a VTR so that the time of the electronic clock can be automatically corrected periodically according to the station time. It is an object of the present invention to provide a receiver automatic visual correction system and method.

It is still another object of the present invention to transmit time information from a broadcasting station such as a television broadcasting station, and to use the same time information from a receiver such as a VTR to automatically set the time of the electronic clock in the initial state. It is an object of the present invention to provide a system and method for automatically setting and correcting a receiver time that enables periodic automatic calibration in a non-initial state.

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

FIG. 1 shows a data format of encoded broadcast station visual information included in a composite video signal which is a broadcast signal transmitted from a television station.

Here, FIG. 1A shows 21 data lines constituting the vertical retrace period of field 1 of a composite video signal. Typically, among these data lines, data lines 1-3 and 7-9 are used as equalization pulse strings. The remaining data lines 10-21 are provided for use, for example, for teletext.

Therefore, in the present invention, it is assumed that among these data lines, data line 16 is used for time setting.

As shown in FIG. 1B, the data line 16 shown in FIG. 1A is composed of fifteen 8-bit words, of which words 5 and 11-14 are shown in FIG. 1C. As shown, it is used as time information and the rest is used for various controls.

In Fig. 1C, bit 1 of word 5 is a sign bit, and the time data becomes valid when the content of the sign bit is " 1 ".

On the other hand, bits 2-8 of word 5 are used to indicate "years".

Also, bits 3-7 of word 11 are used to indicate "day", bits 8 of word 11 and bits 1-3 of word 12 are used to indicate "month", and bits 4-8 of word 12 are " "Hours", bits 1-6 of word 13 are used to indicate "minutes", and bits 3-8 of word 14 are used to indicate "seconds."

As described above, the data format described with reference to FIG. 1 is merely an example, and other forms may be used.

On the other hand, Figure 2 is a system consisting of a transmitting device 10 for transmitting a broadcast signal including the broadcast station time information encoded as described with reference to FIG. 1 and a receiving device 20 for receiving the broadcast signal therefrom. It is shown.

In the receiver 20, (1) is a tuner, and the tuner 1 is a circuit for receiving a broadcast signal similarly to a conventional tuner. (2) is a video intermediate frequency (PIF) circuit which generates a video intermediate frequency signal, and (3) is a video circuit which performs video signal processing related to recording / reproducing.

Further, reference numeral 4 denotes a decoder, which decodes broadcast station time data of year, month, day, hour, minute and second contained in data line 16 as described with reference to FIG.

In addition, (5) receives the broadcasting station time from the decoder 4, and sets the receiver time according to the broadcasting station time transmitted from the broadcasting station in the initial state, and sets the receiver time in the initial state (for example, 9 pm Each station) compares the station time with the receiver time and adjusts the receiver time according to the station time. On the other hand, it plays the role of allowing the time to be set manually according to manual operation from the outside. As the control means, the microcomputer is usually used as the control means 5.

On the other hand, (6) is a display device for visually displaying data of year, month, day, hour, minute, the display device 6 can be used LED, fluorescent display panel, on-screen display (OSD) and the like. (7) is a key matrix circuit used for manually setting the time.

3 shows a flowchart for explaining the operation of the control means shown in FIG. In the state where power is supplied to the control means 5 of FIG. 2, the control means 5 performs the following operation.

In step 1 of time manual setting determination, as an example external to the VTR, it is determined whether the clock set switch (not shown) is turned ON by the user, and if not, the flow proceeds to step 7; Proceed to

In this case, if it is determined that the time is manually set in the step 1, in step 2, the year / month according to the operation of the external switches by the user, for example, "ENTER", "+", "-" switch (not shown) The time setting processing of / day / hour / minute is performed, and the time setting processing is finished in step 3 in accordance with the operation of turning off the external clock set switch (not shown) by the user.

Next, in step 4, it is determined whether the forced on flag ON FLAG is "1". Here, the forced on flag of "1" means that the broadcast receiver 8 including the tuner 1, the video intermediate frequency (PIF) circuit 2 and the decoder 4 of FIG. 2 is turned on for clock setting and correction. In other words, it indicates that the driver is in a forced driving state, that is, in a forced driving state. On the contrary, the forced on flag of "0" means that the broadcast receiver 8 is not turned on for clock setting and correction. It is in a state.

In the case of the time manual setting described above, it is irrelevant to what state the broadcast receiver 8 of FIG. 2 is in. In other words, it is not necessary to force the broadcast receiver 8 to be in the on state. It is determined that the on flag is '0' and the process returns to step 1 again.

Next, if it is determined in step 1 that the time is not manually set, the process proceeds to step 7 in which step 7 determines whether the current receiver time is a preset correction time.

That is, the microcomputer as the control means 5 reads the receiver time in the internal memory and confirms whether it is a correction time (for example, p.m. 9:00). In this case, in step 7, if the receiver time is the correction time, the process proceeds to step 8;

If the receiver time is the correction time in step 7, the correction flag is changed to "0" in step 8. Here, the correction flag "0" indicates a state in which it is allowed to change in accordance with the receiver time, and the correction flag "1" indicates a state in which it is not allowed to change the receiver time in accordance with the broadcast station time.

Next, in step 9, the broadcast receiver 8 of FIG. 2 judges whether the broadcast receiver 8 is on, proceeds to step 11 if it is on, and proceeds to step 10 if it is off, forcibly turning the broadcast receiver 8 on and forcibly. The on flag is made " 1 " to indicate that the broadcast receiver (8 in FIG. 2) is in a forced on state.

Next, in step 11, it is determined whether a broadcast station time has been received, and if not, proceeds to step 4, and if so, proceeds to step 12.

In step 12, it is determined whether the receiver time is in the initial state, and if it is determined that the initial state is, proceed to step 15;

In step 13, it is determined whether the correction flag is "1", and if "1", the process proceeds to step 4; if "0", the process proceeds to step 14. In step 14, the station time and the receiver time are compared and judged, and if they match, the process proceeds to step 16;

In step 15, the receiver time is set to the station time, in step 16 the correction flag is made " 1 "

In step 4, as described above, it is determined whether the forced on flag is "1", and when it is confirmed as "0", it returns to step 1, and when it is confirmed by "1", it proceeds to step 5.

In step 5, the broadcast receiver 8 is turned off (when the broadcast receiver 8 is forcibly turned on) and the forced on flag is set to " 0 ", and then the process returns to step 1.

The summary above is as follows.

First, if it is determined in step 1 that the time is manually set, the process returns to step 1 through steps 2, 3, and 4.

Secondly, in the case of the initial state (when the power failure compensation time has elapsed) when the VTR returns to the normal state from the state of the blackout light, step 1, step 7, step 11, step 12, step 15, step 16, and step 4 Return to step 1.

Third, if it is not the initial state and the receiver time is the correction time and the broadcasting station time and the receiver time are different, then Step 1, Step 7, Step 8, Step 9, (optionally Step 10), Step 11, Step 12, Step 13, Step 14, Step 15, Step 16, and Step 4 (optionally through Step 5, return to Step 1).

Next, FIG. 4 shows an automatic receiver time setting system according to the present invention. In particular, as shown in FIG. 2 and described with reference to FIG. 3, the automatic receiver time setting operation of the control means 5 is converted into a functional block. It is shown using.

In FIG. 4, the transmitter 10, the tuner 1 in the receiver 20, the image intermediate frequency (PIF) circuit 2, the video circuit 3 and the decoder 4 are those of FIG. Since it is the same as, the description thereof will be omitted.

On the other hand, the receiver time generating means 25, the initial state determining means 26 and the changing means 27 are included in the control means 5 of FIG. Here, the receiver time generating means 25 functions to generate and generate a receiver time to be sent to the display device 6 of FIG.

The initial state determining means 26 is coupled to the receiver time generating means 25 to determine whether the receiver time to be displayed is in an initial state.

Further, the changing means 27 is coupled to the initial state determining means 26 so that when the initial state determining means 26 generates a confirmation signal that the receiver time is in the initial state, In response, the receiver time of the receiver time generating means 25 is set to the broadcasting station time from the decoder 4.

Next, FIG. 5 shows a receiver time automatic correction system according to the present invention. In particular, FIG. 5 is a functional block for automatic receiver time correction operation of the control means 5 as shown in FIG. 2 and described with reference to FIG. Is shown using

In FIG. 5, the transmitter 10, the tuner 1 in the receiver 20, the image intermediate frequency (PIF) circuit 2, the video circuit 3 and the decoder 4 are those of FIG. Since the description is the same as that in FIG. 2, the description thereof will be omitted and only the receiver time generating means 35, the correction time determining means 36, the comparing means 37 and the changing means 38 included in the control means 5 of FIG. .

Here, the receiver time generating means 35 serves to generate a receiver time to be sent to the display device 6 of FIG. 2 for display, and the correction time determining means 36 is provided from the receiver time generating means 35. It determines whether the inputted receiver time coincides with a preset correction time (for example, pm 9:00) and performs a function of generating a correction time confirmation signal when the receiver time matches.

On the other hand, the comparison means 37 compares the receiver time from the receiver time generation means 35 and the broadcast station time from the decoder 4 in response to the correction time confirmation signal input from the correction time determination means 36. In comparison, they function to generate inconsistency signals (at different times).

In addition, the changing means 38 has a function of changing the receiver time of the receiver time generating means 35 to the broadcasting station time from the decoder 4 in response to an inconsistency signal input from the comparing means 37 so as to be corrected. Do it.

6 shows an automatic receiver time setting and correction system according to the present invention. In particular, as shown in FIG. 2 and described with reference to FIG. The corrective action is shown using the function block.

In FIG. 6, the transmitter 10, the tuner 1 in the receiver 20, the image intermediate frequency (PIF) circuit 2, the video circuit 3 and the decoder 4 are those of FIG. Since the description is the same as that in FIG. 2, the description thereof is omitted, and the receiver time generating means 45, the correction time determining means 46, the initial state determining means 47, the comparing means 48 and the change included in the control means 5 of FIG. Only the means 49 will be described.

Here, the receiver time generating means 45 performs a function of generating and generating a receiver time to be sent to the display device 6 of FIG.

The correction time determining means 46 determines whether the receiver time inputted from the receiver time generating means 45 is a preset correction time, and generates a correction time confirmation signal when the correction time is corrected. A function for generating an uncorrected visual confirmation signal is performed.

The initial state determining means 47 determines whether the receiver time input from the receiver time generating means 45 is in an initial state, generates an initial state confirmation signal when the initial state is present, and non-initial confirmation when the initial state is not. Function to generate a signal.

The comparison means 48 receives the correction time confirmation signal from the correction time determination means 46 and the non-initial state confirmation signal from the initial state determination means 47, from the receiver time generation means 45. The receiver time input and the broadcasting station time input from the decoder means 4 are compared to perform a function of generating a mismatch signal when they do not coincide with each other.

The changing means 49 has a non-correction time confirmation signal inputted from the correction time determination means 46 and an initial state confirmation signal from the initial state determination means 47, or a mismatch signal from the comparison means 48. Is input, the function changes the receiver time of the receiver time generating means 45 to the broadcasting station time from the decoder means 4.

As is apparent from the foregoing description, according to the present invention, the broadcast station transmits time information and the receiver uses the time information, and the receiver time can be automatically set in the initial state, and / or the fixed time in the non-initial state. Each time, the receiver time can be corrected according to the broadcast station time, and manual time setting by conventional manual operation is also possible.

Claims (8)

A transmitter 10 for transmitting a broadcast signal including encoded broadcast station time information, and a receiver 20 for receiving the broadcast signal from the transmitter, comprising: (a) the signal included in the received broadcast signal; Decoder means 4 for decoding broadcast station time information to generate broadcast time, (b) receiver time generating means 25 for generating and generating receiver time to be displayed, and (c) from said receiver time generating means. Initial state determination means 26 for determining whether the receiver time is in an initial state and generating an initial state confirmation signal; and (d) generating the receiver time in response to the initial state confirmation signal from the initial state determination means. And a receiver (20) comprising a receiver (27) for changing the receiver time of the means to the broadcast station time. A transmitter 10 for transmitting a broadcast signal including encoded broadcast station time information, and a receiver 20 for receiving the broadcast signal from the transmitter, comprising: (a) the signal included in the received broadcast signal; Decoder means 4 for decoding broadcast station time information to generate broadcast time, (b) receiver time generating means 35 for generating and generating receiver time to be displayed, and (c) from said receiver time generating means. Correction time determination means (36) for determining whether the receiver time is a preset correction time to generate a correction time confirmation signal, and (d) the means time in response to the correction time confirmation signal from the correction time determination; Comparison means 37 for generating an inconsistency signal when the receiver time from the generating means is compared with the broadcasting station time from the decoder means, and (e) the number of comparisons; Receiver time automatic correction system configured for the receiver time of the receiver time generating means in response to the inconsistency signal from the said receiving device (20) comprises means (38) able to be changed to the station time. A transmitter 10 for transmitting a broadcast signal including encoded broadcast station time information and a receiver 20 for receiving a broadcast signal from the transmitter, comprising: (a) the broadcast station included in the received broadcast signal; Decoder means (4) for decoding broadcast information to generate broadcast station time, (b) receiver time generating means (45) for generating and generating receiver time to be displayed, and (c) said receiver from said receiver time generating means Correction time determining means 46 for determining whether the time is a preset correction time and generating a correction time confirmation signal and a non-correction time confirmation signal, and (d) the receiver time from the receiver time generating means is in the initial state. An initial state determination means 47 for generating an initial state confirmation signal and a non-initial state confirmation signal, and (e) from said correction time determination to said non-initial state confirmation signal. Answering means 48 for comparing the receiver time from the receiver time generating means with the broadcasting station time from the decoder means and generating a mismatch signal; and (f) the correcting time determining means from the correcting time determining means. The receiver time of the receiver time generating means can be changed to the broadcasting station time in response to a non-corrected time confirmation signal and the initial state checking signal from the initial state determining means or the mismatch signal from the comparing means. A receiver time automatic setting and correction system comprising said receiving device (20) comprising means (49). A transmitter 10 for transmitting a broadcast signal including encoded broadcast station time information, and a receiver 20 for receiving a broadcast signal from the transmitter, wherein the broadcast station time information included in the received broadcast signal is included. For use with a system comprising a broadcast receiver (8) comprising a decoder means (4) for extracting and generating a broadcast station time and a receiver time generator for generating and generating a receiver time to be displayed. A method for automatically setting a receiver time, the method comprising: (a) determining whether the receiver time from the receiver time generator is in an initial state, and (b) the receiver time is in an initial state in (a). And if it is determined that the receiver time is set to the broadcasting station time. A transmitter 10 for transmitting a broadcast signal including encoded broadcast station time information; A broadcast receiver (8) comprising a receiver (20) for receiving a broadcast signal from the transmitter, comprising a decoder means (4) for extracting the broadcast station time information contained in the received broadcast signal to generate a broadcast station time. And a receiver time automatic correction method suitable for use with a system comprising the receiver 20 having a receiver time generator for generating and generating a receiver time to be displayed. Determining whether the receiver time from is a preset correction time; and (b) if it is determined in step (a) that the receiver is the preset correction time, determining whether the receiver time coincides with the broadcasting station time. And (c) if it is determined in step (b) that the receiver time does not match the broadcasting station time, A receiver automatic time correction method comprising the step of correcting the time the station time. 6. The method of claim 5, wherein the steps of (a) and (b) determine whether the user is watching a broadcast and turn the broadcast receiver on (drive) when the user is not watching the broadcast. Further comprising, after step (c), turning off the broadcast receiver in an off (non-driven) state. A transmitter 10 for transmitting a broadcast signal including encoded broadcast station time information, and a receiver 20 for receiving a broadcast signal from the transmitter, wherein the broadcast station time included in the received broadcast signal is included; For use with a system comprising a broadcast receiver 8 comprising decoder means 4 for extracting information to generate broadcast station time and a receiver apparatus 20 for generating and generating a displayed receiver time. A method of automatically setting and correcting a receiver time, the method comprising: (a) determining whether the receiver time from the receiver time generator is a preset correction time, and (b) the receiver time from the receiver time generator is Determining whether the initial state is applied; and (c) in step (a), the receiver time is determined to be the preset correction time. If it is determined in step (b) that the receiver time is not the initial state, comparing the receiver time with the broadcasting station time; and (d) the receiver time is the set correction time in step (a). If it is determined that the receiver time is the initial state in step (b) or if it is determined in step (c) that the station time does not coincide with the receiver time, the receiver time is determined as the station time. Receiver time automatic setting and correction method comprising the step of changing. 8. The method of claim 7, wherein the step (a) and the step (b) determines whether the user is watching a broadcast, and if the user is not watching the broadcast, turning on the broadcast receiver (on). The method further comprises the step of, after the step (d), further comprising the step of turning off the broadcast receiver (non-driven) state.