JPH10276412A - Teletext receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide plural optional teletext programs that cover plural channels in the range of the preliminarily defined number of programs by using a single or a few TV bands to users. SOLUTION: A schedule generating part 11 generates a program schedule that groups one or plural programs which are designated by a channel or a program number and stores it in a schedule storing part 14. A schedule executing part 12 receives and decodes a corresponding program image based on the program schedule of the part 14, stores it in a program storing part 8, also, successively reads the program image that is stored in the part 8 according to the program schedule, converts it into a television signal of a prescribed channel band and sends it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiving apparatus for receiving, reproducing, and displaying teletext multiplexed on a TV broadcast or FM broadcast.

[0002]

2. Description of the Related Art Conventionally, a teletext signal is VHF or UH.
Multiplex transmission is performed using the vertical blanking period of the television signal F. For the reproduction of teletext broadcasting in a normal TV receiver, a built-in receiver or a special text multiplex decoder is used. In the teletext using the television broadcast, a plurality of programs are transmitted by one broadcast channel.
Or, it is composed of a plurality of page screens.

[0003] When a teletext is watched using a teletext decoder, a screen of a total table of contents of the teletext is called by selecting a broadcast channel. Next, a program to be watched is selected from the general table of contents, a program number is designated, and a screen to be watched is searched for while selecting a page for the designated program. For such a teletext, even in a CATV system, a teletext service can be provided by installing a text multiplex decoder as a head-end broadcast facility. In this case, a program of a specific teletext channel is selected by a head-end teletext decoder, and a teletext program is fixedly broadcast. For this reason, even if a character multiplex decoder is not provided on the TV side which is a subscriber terminal of the CATV system,
You can watch teletext.

In recent years, text multiplex broadcasting using FM broadcasting has also been started. A teletext receiving system using FM broadcasting is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-7971.
No. 8. In this system, a text broadcast is received, converted into a display signal by a decoder, further converted into a band of a vacant channel of a television broadcast signal, and sent to a user through a common listening line. For this reason, the user can enjoy teletext even without a dedicated device.

[0005] Teletext broadcasting using FM broadcasting has a smaller amount of information than television broadcasting, and one program corresponds to one page of text image information. For this reason, writing and reading to and from the teletext broadcast memory are managed by page numbers. That is, when a specific FM broadcast is selected, the text broadcast is received and converted into a display signal, and all pages are stored while updating the memory. As for the readout output of the teletext from the memory, a specific page image is read out by designating a page number and transmitted to the common listening line.

Further, as a system dedicated to a TV receiver for viewing teletext on the terminal side, a selector button for selecting a page number of teletext stored in the memory is provided, and all the data stored in the memory are operated by operating the selector button. The program can be searched by displaying each page from the page.

[0007]

By the way, teletext broadcasts currently performed include news programs, sports news,
It has programs of various genres, such as stock market conditions, weather forecasts, municipal information, sightseeing guides, road information, music programs, and cooking programs, and these programs also have unique contents for each broadcast channel. For this reason, selecting one of a large number of programs and fixedly providing it as a teletext service of the CATV system is inevitable in response to various requests of the user.
Utilization of information using teletext is greatly restricted.

Considering that many users can use the program, for example, a program such as news or weather forecast is selected, and as a result, it can only be used as a news channel or a weather forecast channel. In order to solve this problem, it is conceivable that a TV band is allocated to each teletext program at the head end and transmitted. However, when a dedicated TV band is allocated and transmitted for each teletext program, it is necessary to provide a dedicated text multiplex decoder for each broadcast program in order to ensure the real-time performance of teletext. There has been a problem that the number of multiplex decoders is increased and the equipment cost is increased.

On the other hand, in a character multiplex decoder dedicated to a TV receiver, a broadcast channel and a program are selected each time. However, among many teletext broadcasts, there are not many programs that you want to watch on a daily basis, for example,
Each time, channel selection and program selection are required, and there is a problem that the operation is troublesome. The present invention has been made in view of such a conventional problem, and allows a plurality of teletext programs over a plurality of channels to be transmitted to a single or a small number of TV bands within a predetermined number of programs. The present invention provides a teletext receiving apparatus which can be provided to a user by using the text broadcasting.

[0010] The present invention is also directed to a teletext receiving apparatus as an apparatus dedicated to a TV receiver, which is capable of automatically viewing any of a plurality of teletext programs over a plurality of channels within a predetermined number of programs. Provide equipment.

[0011]

To achieve this object, a teletext receiving apparatus according to the present invention is configured as follows. According to the present invention, first, within a range of a predetermined number of programs, an arbitrary plurality of teletext programs over a plurality of channels are provided to a user who is a subscriber of the CATV system using a single TV band. A teletext receiving device is obtained.

For this reason, the present invention relates to a character broadcast receiving apparatus for receiving and reproducing a character broadcast multiplexed on a TV broadcast, an FM broadcast, or the like. A decoding unit for restoring a program image, a program storage unit for storing the program image restored by the decoding unit according to the classification by channel number and program number, and one or more programs are grouped by specifying a channel and a program number. A schedule creator for creating a program schedule, a schedule storage for storing the program schedule created by the schedule creator, and a program stored by restoring a corresponding program image by channel selection control of the reception decoding unit according to the program schedule in the schedule storage. And a program for reading out the program images stored in the program storage unit. Execution unit, and is characterized in that a television signal converting unit for sending by converting the program image read from the program storage unit in the schedule execution unit to a television signal of a predetermined channel bandwidth.

According to the teletext receiving apparatus of the present invention, a program schedule can be created in advance by designating a channel and a program number corresponding to the schedule number on the head end side. A teletext service is provided in which a plurality of teletext programs obtained by receiving a broadcast are repeatedly sent to the subscriber side in order. Thus, a single or a small number of TV bands can be used to provide a plurality of program images according to a program schedule, and efficiently transmit and utilize most of the teletexts required by subscribers on a daily basis. be able to.

The schedule creation unit further specifies a display time of the program image in page units and stores the designated display time in the schedule storage unit. The schedule executor sequentially reads the images in page units over the display time when reading each program image. For this reason, the display time of each page of a plurality of scheduled programs can be appropriately set within a range of, for example, a maximum of 30 seconds, and the time required for one program schedule output can be set optimally according to the form of the system to provide a plurality of characters Enables viewing of broadcast programs.

[0015] The schedule execution section stores the program image restored by the channel selection control of the reception decoding section based on the designated channel and program number in the program storage section and updates the program image. The data is read out in units, converted into a television signal by the television signal converter, and transmitted. Therefore, the latest teletext content is always provided. The schedule execution unit reads out the program image already stored in the program storage unit and reads the TV signal if the program image is not restored when the reception decoding unit is selected and controlled based on the designated channel and program number. It is converted into a television signal by the conversion unit and transmitted. For this reason, even if the teletext is ended or interrupted, the latest program information can be continuously supplied, and a 24-hour teletext service can be realized. Furthermore,
A nonvolatile memory is used for the schedule storage unit.

According to another aspect of the present invention, as a teletext receiver dedicated to a TV receiver, an arbitrary plurality of teletext programs over a plurality of channels can be automatically transmitted within a predetermined number of programs. There is provided a teletext receiving apparatus designed to be watched. This device is a teletext receiver for reproducing multiplexed teletext from a tuner output signal selected by a TV receiver, and restores a program image composed of a set of text image information in page units from the tuner output signal. A reception decoding unit, a program storage unit for storing the program images restored by the reception decoding unit according to the classification by the channel number and the program number, and a program schedule in which one or a plurality of programs are grouped by designating the channel and the program number. A schedule creation unit for designating a display time for displaying a program image in page units, a schedule storage unit for storing the program schedule and display time created by the schedule creation unit, and a remote control of the TV receiver according to the program schedule in the schedule storage unit. The program image is restored by the reception decoding unit by tuning control and stored in the program storage unit. A schedule execution unit that sequentially reads out the program images stored in the program storage unit in accordance with the program schedule, and sequentially reads out the image in page units during the display time while each program image is being read out; and a schedule execution unit. And a video output unit for supplying a program image read from the program storage unit to a video signal input terminal of the TV receiver, for example, an RGB input terminal.

Also in this case, the user can create a program schedule in advance by designating a channel and a program number that the user wants to watch in accordance with the schedule number, and a plurality of teletext programs are automatically generated according to the program schedule. It is sequentially and repeatedly switched and displayed, so that many text broadcasts can be efficiently viewed without requiring operations such as channel selection and program selection.

[0018]

FIG. 1 shows an embodiment of a teletext receiving apparatus according to the present invention, which is provided at a head end of a CATV system. In FIG. 1, a teletext receiving apparatus 1 provided at the head end of a CATV system
Has a TV tuner 2, converts a TV broadcast reception signal received by the TV antenna 3 into a video signal, and converts the TV broadcast reception signal into a video signal.
Output to The character decoder 6 receives a video signal from the TV tuner 2, extracts a horizontal synchronization signal and a vertical synchronization signal, and further extracts a character signal superimposed during a vertical blanking period of the video signal.

The character signal extracted from the video signal is converted into a data signal for teletext. The character decoder 6
The data signal of the teletext is decoded to read the corresponding characters and graphics from the kanji storage unit 7, a teletext program image is created and stored in the program storage unit 8. The program image information stored in the program storage unit 8 has the screen configuration shown in FIG.
The alarm display screen storage unit 9 stores original display screen information for creating an alarm display screen by receiving serial data from an alarm receiver 22 described later.

FIG. 2 shows a structure of a program screen obtained by receiving a text broadcast of a specific TV broadcast channel. This program screen has channel index screens 40-1 to 40- at the top.
Has three. The screen image restored by receiving the teletext includes a header text display area 41 and a text display area 42. In the header sentence display area 41, a magazine number 43 for identifying a program group and a program number 44 for identifying a program are displayed.

In the text display area 42, for example, in the first channel table of contents screen 40-1, four programs from program 1 to program 4 are displayed as tables of contents. The channel table of contents screens 40-1 to 40-3 are a total table of text broadcasting of a certain channel, and the number of table of contents screens is one or a plurality of screens according to the number of programs being broadcast by the channel. Subsequent to the channel table of contents screens 40-1 to 40-3 serving as the total table of contents, if the total number of programs is m programs, the program screen group 4
5-1 to 45-m are provided. Program screen group 45-1
Each of 45-m includes one or a plurality of page screens. For example, the program screen group 45-1 of the first program 1 is composed of page screens of n pages of page screens 46-11 to 46-1n.

In the header display area 41 of the page screens 46-11 to 46-1n, the channel table of contents screens 40-1 to 40-4 are displayed.
Similarly to 0-3, the magazine number 43 is displayed, and the program number 44 includes the program number “111” and the page number “0”.
1 "and the total number of pages" n "are displayed. Of course, in the body display area 42 of each page screen of the program screen groups 45-1 to 45-m, image information such as characters and graphics provided by each program is arranged.

Referring again to FIG. 1, the character decoder 6 is provided with an MPU 10 functioning as a controller. The MPU 10 is provided with a schedule creation unit 11 and a schedule execution unit 12 for creating and executing a program schedule of the teletext receiving apparatus 1 of the present invention. An operation display unit 13 for inputting operations to the schedule creation unit 11 and the schedule execution unit 12 and displaying the status.
And a schedule storage unit 14 for storing the program schedule created by the schedule creation unit 11. The schedule storage unit 14 uses a non-volatile memory such as an EEPROM in which the stored program schedule is not erased even when the power is turned off.

The schedule creation section 11 of the MPU 10
By specifying a channel and a program number, for example, a program schedule of up to 10 programs is created and stored in the schedule storage unit 14. According to the program schedule stored in the schedule storage unit 14, the schedule execution unit 12 restores the corresponding program image by the channel selection control of the TV tuner 2 and stores the restored program image in the program storage unit 8, and stores the program image in the program storage unit. A process of reading and outputting a program image is performed.

The text broadcast program image having the screen configuration of FIG. 2 stored in the program storage unit 8 is an RGB signal.
Therefore, the RGB signal of the program image read from the program storage unit 8 by the schedule execution unit 12
Is output to the RGB / NTSC conversion unit 15 via the USB port and converted into an analog NTSC television signal.

The NTSC television signal from the RGB / NTSC conversion unit 15 is subjected to frequency modulation of a predetermined assigned channel output from the channel setting unit 17 by the TV modulator 16, and the CA signal is output from the CATV output terminal 18.
Output to the TV line 19. The output of the TV modulator 16 can also be output from a monitor output terminal 20 to a monitor television 21 installed at the head end. The monitor output terminal 20 may output the NTSC signal from the RGB / NTSC conversion unit 15 before modulation, or may output the RGB signal output from the program storage unit 8 directly to the monitor television 21. It may be.

Further, an externally installed alarm receiving panel 22 is connected to the MPU 10 of the teletext receiving apparatus 1 via a serial interface 23. Alarm receiver 22
Monitors for abnormalities such as fires, gas leaks, and emergencies. Upon receiving the abnormalities, the serial interface 23 transmits data including the types, floors, room numbers, and the like of fires, gas leaks, and the like.
The data output from the alarm receiving panel 22 instead of the teletext screen from the program storage unit 8 is input to the setting portion of the display screen information stored in the alarm display screen storage unit 9. To create an alarm display screen, CATV
It can be transmitted to the line 19 and displayed on a TV receiver on the terminal side.

Further, in the teletext receiving apparatus 1 of FIG. 1, a function of reproducing teletext multiplexed with FM broadcast can be added as required. That is, with respect to the reception signal of the FM antenna 5, an intermediate frequency signal corresponding to the channel selection by the FM tuner 4 is output to the character decoder 6, and the character decoder 6 has a separate character decoder function dedicated to the text broadcast multiplexed with the FM broadcast. With the provision, the text broadcast image can be reproduced for both the text broadcast multiplexed to the TV broadcast and the text broadcast multiplexed to the FM broadcast. The teletext multiplexed on the FM broadcast corresponds to one screen in the teletext of the TV broadcast in which one program is shown in FIG. 2, and therefore the teletext multiplexed on the FM broadcast is multiplexed on the TV broadcast. It can be handled as one teletext program. In this case,
A kanji storage unit for teletext broadcasting multiplexed with FM broadcasting may be separately provided.

FIG. 3 shows an embodiment of the panel configuration of the operation display unit 13 provided in the teletext receiving apparatus 1 of FIG. On the panel of the operation display section 13, display selection keys 25, shift keys 31a and 31b, memory keys 3
2. A start key 33 and a schedule display key 35 are provided. The display lights corresponding to the display selection key 25 include a schedule number LED 26, a channel LED 27, a program number LED 28, a page LED 29, and a display time LE.
D30 is provided.

A display 24 is provided corresponding to the shift keys 31a and 31b. The display unit 24 has three display units of 7 segments, and can display numbers and alphabets. Start LED 34 corresponding to start key 33
Is provided, and a schedule display LED 36 is provided corresponding to the schedule display key 35. Power supply L
An ED 37 and a receiving LED 38 are provided.

The operation mode of the teletext receiving apparatus 1 of the present invention using the operation display unit 13 shown in FIG. 3 has two main modes. Schedule setting mode Schedule execution mode The schedule setting mode and the schedule execution mode can be switched by operating the start key 33. When the start LED 34 is off, the schedule setting mode is set. When the start key 33 is operated in this state, the start LED 34 is turned on, and the mode is switched to the schedule execution mode. Of course, in any mode, the power LED 37 is lit by turning on the power,
In addition, the LED 38 is lit during reception of the text broadcast.

In the schedule setting mode, the display selection key 25, the memory key 32, the shift key 31a,
Using 31b, a program schedule of up to 10 programs can be created. The creation of the program schedule can be realized by operating the memory key 32 after performing three of the following: schedule number selection, channel number selection, program number selection.

The schedule number and the channel program number are selected by operating the display selection key 25, the schedule number LED 26, the channel LED 27, the program number L
Switching can be confirmed by the lighting state of the ED 28. That is, every time the display selection key 25 is operated, the schedule number LED2
6, a re-click switching display is performed in which the channel LED 27, the program number LED 28, the page LED 29, and the display time LED 30 are turned on in order and return to the original state.

Therefore, when a schedule number is first selected in the schedule setting mode, the display selection key 25
Operation, the schedule number LED 26 is turned on. In the initial state where the schedule number LED 26 is turned on, the display 24 displays the schedule number “0”.
01 "is displayed. By operating the shift key 31a in this state, the schedule number can be increased one by one.

By operating the shift key 31b, the schedule number can be reduced by one. The number of programs in the schedule that can be set in the present invention is, for example, 10 programs. When the number is increased from 1 to 10 by operating the shift key 31a and then further pressed, re-click switching to return to the original position is performed. 1 of the schedule number by the shift key 31b
For the two reductions, the re-click switching display in the same reverse direction is performed.

Thus, the schedule number LED2
When an arbitrary schedule number is displayed on the display 24 with the shift keys 31a and 31b in the lighting state of 6 and selected, the display selection key 25 is then operated to operate the channel LED.
27 is turned on, and in this state, the channel number to be selected is displayed on the display 24 by the shift keys 31a and 31b.

In the initial state, the display 24 displays the channel number “00”. By operating the shift keys 31a and 31b in this state, VHF 1 to 1
2 channels, UHF channels 13 to 62, and V
13 of CATV allocated to HF free frequency band
38 channels can be selected. Of course, the channel selection selects a broadcast channel on which teletext is performed.

In this case, the display 24 shows the VHF 1
The channel is "01" and the UHF channel 60 is [U
23, and the 23 channels of CATV are displayed for easy identification, such as "C23". Whether or not text broadcasting is being performed by channel selection can be confirmed by looking at the LED 38 during reception. If so, the receiving LED 38 is turned on during channel selection, and if text broadcasting is not being performed, the receiving LED 38 is turned off during channel selection.

Next, the display selection key 25 is operated again to switch on the lighting of the program number LED 28. Program number LED2
When the lighting is switched to 8, the display 24 displays “000” as an initial value. In this state, the shift key 31
By operating a and 31b, the program numbers can be sequentially switched and selected. When a channel is selected when the channel LED 27 is turned on, the program storage unit 8 shown in FIG.
In response to a control signal from the TV tuner 2, the text decoder multiplexed on the TV broadcast of the channel selected by the character decoder 6 is reproduced, and the program storage unit 8 stores all the text broadcast programs on the selected channel. Is stored.

For this reason, when the program number is switched to the lighting state of the program number LED 28 in FIG. 3 and the program number is selected by the shift keys 31a and 31b, the image of the corresponding program number is read out from the program storage section 8 and output and displayed. You. The image corresponding to the program number in this case is displayed on the top one page screen. The selection of the program number on the operation display unit 13 is performed by the shift key 31a if the program number is known in advance.
The program number to be selected may be set on the display 24 by the operation of 31b.

The program number is selected by checking it in advance. If the relation between the program content and the program number is not known, a monitor connected to the monitor output terminal 20 of the teletext receiver 1 as shown in FIG. The TV 21 displays the channel table of contents as the total screen of FIG. 2 based on the channel selection, checks the program number, and displays the program number to be scheduled on the display 24 as the program number selection state by turning on the program number LED 28. Just set it.

When the program number is set, the first page screen of the selected program is displayed on the screen of the monitor television 21. If you want to know more program contents in this state,
By operating the display selection key 25 to turn on the page LED 29 and operating the shift keys 31a and 31b in this state, the page screen can be switched by changing the number of pages of the display 24.

When the selection of the schedule number, channel, and program number by the switching operation of the display selection key 25 is completed, the schedule registration is performed by operating the memory key 32 in this state. For subsequent schedule registration, the same operation is repeated, and up to 10 programs can be registered. FIG. 4 is an explanatory diagram of a program schedule created in the schedule setting mode and stored in the program storage unit 8. Program schedules are schedule numbers 1-1
It has 0, and the channel number and the program number are registered for each schedule number. Also, the registration of an arbitrary schedule number can be deleted from the program schedule once registered as needed. FIG. 5 shows the schedule number NO. Of the already created program schedule 60a. 3 is deleted, and as shown in the program schedule 60b on the right side, the registration contents after the deleted part are packed into the upper schedule number, and a space is created at the last schedule number 10 as shown in the right program schedule 60b. .

Here, regarding the deletion of the program schedule of FIG. 5, the schedule number LE by the display selection key 25 is used.
When the memory key 32 is pressed, for example, for 3 seconds or more with the deleted schedule number, for example, “003” displayed on the display 24 after the lighting display of D26, the channel and program number of the currently selected schedule number are deleted. Is performed.

Referring again to FIG. 3, in the schedule setting mode, the display time used for executing the program schedule can be set simultaneously with the registration of the program schedule as shown in FIG. The display time is set by turning on the display time LED 30 by operating the display selection key 25. The display time can be set, for example, from 5 seconds to 30 seconds at intervals of 5 seconds.

The display time LED 3 is operated by the display selection key 25.
When 0 is turned on, the display time registered at that time is displayed on the display 24. By operating the shift key 31a in this state, the display time can be sequentially increased at 5-second intervals. Of course, if the shift key 31b is operated, the display time can be reduced at intervals of 5 seconds. When the display selection of the necessary display time is made on the display 24 using the shift keys 31a and 31b, the selected display time can be registered by pressing the memory key 32.

The display time is set for all programs. In the schedule execution process, the page screen of the program of each program number registered in the program schedule is displayed for the set display time as shown in FIG. Then, the display switches to the next page screen. That is, the display time sets the switching time of the page screen when the program screen is displayed according to the program schedule.

When the registration of the program schedule in the schedule setting mode is completed, the start key 33 is pressed to turn on the start LED 34, thereby switching to the schedule execution mode. In the schedule execution mode, in accordance with the stored contents of the program schedule of up to 10 programs shown in FIG. 4, while the channel selection and the program selection by the program number are sequentially performed, the page display switching for each program over the designated time is performed. In order to output and display teletext.

In the display output of a text broadcast in the schedule execution mode, when a text broadcast is received by selecting a channel in accordance with the schedule number, all programs on that channel are stored in the program storage unit 8, and thereafter, The program image of the program number specified in the program schedule is read from the program storage unit 8, and the page screen is switched at the specified display time.

Therefore, during text broadcasting in the schedule execution mode, the latest information is always received and the program storage unit 8 is stored and updated. When the reception condition is poor or during the night when there is no text broadcasting, the latest program image stored in the program storage unit 8 is read out and transmitted, so that a 24-hour program broadcasting service can be provided without interruption of the program broadcasting. realizable.

FIG. 6 is an explanatory diagram of the schedule confirmation screen 46. The schedule confirmation screen 46 can be displayed by operating the schedule display key 35 provided on the operation display unit 13 in FIG. 3 to turn on the schedule display LED 36. The schedule confirmation screen 46 includes, for example, the deleted program schedule 6 shown in FIG.
0b is displayed, and the display time set at that time is further displayed. In addition, a marker 47 serving as a frame display is displayed for the channel and the program number corresponding to the currently read schedule number.

The schedule confirmation screen 46 can be output and displayed by operating the schedule display key 35 in both the schedule setting mode and the schedule execution mode. Of course, if the schedule confirmation screen 46 is to be viewed on the head end side, the monitor television 21 may be provided. Further, when a program schedule is not registered in the schedule setting mode, the schedule setting mode can be used as a real-time display mode for text broadcasting. That is, in the real time display mode, the schedule number LED 26 is turned on by the display selection key 25. At this time, desirably, an empty schedule number in which no program schedule is registered is selected by using the display 24 with the shift keys 31a and 31b.

In this selected state, the display is switched to the display of the channel LED 27, and the channel is selected by the shift keys 31a, 31a.
1b, the TV tuner 2 in FIG. 1 is selected every time a channel is selected, and writing of all the text broadcast programs of the selected channel to the program storage unit 8 based on the decoding result of the character decoder 6 is performed. Subsequently, when the display is switched to the display of the program number LED 28 by the display selection key 25, the program corresponding to the selection of the program number on the display 24 by the shift keys 31a and 31b can be read and output.

At this time, with respect to the read output of the selected program, the switching display of the page screen is performed at the set display time, and when the read output of all pages of the program is completed,
Update storage of all received teletext programs in the program storage unit 8 is performed again, and after storage update, readout and output of the selected program are repeated. FIG. 7 shows M in FIG.
5 is a flowchart of a text broadcast receiving process performed by a schedule creation unit 11 and a schedule execution unit 12 provided in the PU 10. First, a program schedule creation process is performed by the processes of steps S1 to S11. The program schedule is created by starting L provided on the operation display panel 13 in FIG.
This is performed after confirming that the ED 34 is turned off and is in the schedule setting mode.

First, in step S1, the display is switched to the display of the schedule number LED 26 using the display selection key 25, and the selection mode of the schedule number is set. Next, in step S2, the schedule number to be registered in the display 24 is selectively displayed using the shift keys 31a and 31b.
In response to the selection of the schedule number, it is checked in step S3 whether or not the selected schedule number has been registered. If the registered schedule number has been registered, in step S4, the channel and program number of the currently registered schedule number are output. Display is performed.

Next, in step S5, the display is switched to the display of the channel LED 27 by the display selection key 25, and the channel selection mode is set. After the channel selection mode is set, the channel number to be registered on the display 24 is selected and displayed by using the shift keys 31a and 31b in step S6. Next, in step S7, the display selection key 2
5, the display is switched to the display of the program number LED, and the program selection mode is set. In step S8, the shift keys 31a, 3
Using 1b, the program number of the channel to be registered is selectively displayed on the display 24.

After the selection of the schedule number, channel number and program number to be registered is completed, the selection is completed by operating the display selection key 25 to return the schedule number LED 26 to the lit state again. . The lighting state of the schedule number LED 26, that is, the return of the initial state is determined in step S9. If the lighting state of the schedule number LED 26 is returned again,
It is determined that the selection for registering the program schedule has been completed, and the process proceeds to step S10.

In step S10, the memory key 3
If a short operation of 2 is detected, for example, if less than 3 seconds is detected, the mode is determined to be the program registration mode, and the process proceeds to step S11.
The registration process of the channel and the program number for the selected schedule number is performed. Subsequently, in step S12, it is checked whether or not a new schedule number selection mode has been set. If the new schedule number selection mode has been set, the process returns to step S2 to register a channel and a program number for the next schedule number. Perform processing. When the display time is set next after the registration of the program schedule is completed, the display time mode is set by switching the display time LED 30 to display by operating the display selection key 25 in step S13, and the shift key 31a is set in step S14. , 31
The display time is selected and set at intervals of 5 seconds from 5 seconds to 30 seconds using b. Then, in step S14, the display time set in response to the operation of the memory key 32 is registered.

On the other hand, if a long operation of the memory key 32 is detected in step S10 of FIG.
Wait for operation of the memory key 32 for 3 seconds or more, and then step S
At 17, the channel and the program registered in the currently selected schedule number are deleted from the schedule program. After the registration of the program schedule and the registration of the display time are completed, in step S18, a start operation by operating the start key 33, that is, switching to the schedule execution mode is determined. Start LE by operating the start key 33
When the start operation is determined by the lighting of D34, the process proceeds to step S19, and a schedule execution process is performed. The schedule execution process stores, reads, and sends out a program according to the creation schedule.

If the start operation by the start key 33 is not performed, in step S20, a normal text broadcast by real-time reception of the channel and program number selected corresponding to the display of the schedule display number on the display 24 at that time. The process is performed in step S20. If the schedule number selection mode by turning on the schedule number LED by the display selection key 25 is determined in step S21 during the normal text broadcasting process, the process returns to step S2 in FIG. Perform the process in the schedule creation mode.

FIG. 9 is a flowchart showing a subroutine of the schedule execution process in step S19 of FIG. In this schedule execution process, the reception and readout storage of a text broadcast according to the program schedule created in the schedule creation mode and stored in the schedule storage unit 14 of FIG. 1 is performed. First, step S1
To select a channel registered in schedule number N. The schedule number N is initially set to N = 1, and the channel registered with the schedule number N = 1 is selected.

This channel selection is performed by selecting MP in FIG.
This is performed by U10 outputting a channel selection control signal to the TV tuner 2. Therefore, the tuner 2 selects the registered channel of the schedule number N and outputs the video signal to the character decoder 6. Then, step S2
Then, all programs restored by the character decoder 6 from the video signal of the selected channel are stored in the program storage unit 8.

Next, in step S3, schedule number N
Then, the storage number of the program storage unit 8 corresponding to the program number is read out and transmitted in page units. When image reading for one page is started in step S3, the elapse of the registered display time T is checked in step S4.
Is passed to step S5, and it is checked whether display output of all pages of the program has been completed.

If all pages have not been completed, step S
In step S3, the next page is designated and the next page is read and transmitted. When it is determined in step S5 that the reading and outputting of all pages of the program has been completed, it is checked in step S7 whether or not the release operation using the start key, that is, the release of the schedule execution mode, has been performed. Proceed and update to the next schedule number N,
Returning to step S1, the reception and storage of all programs by the same channel selection and the reading of the page image for each display time after storage are repeated.

If the program image of the text broadcast is not restored by the channel selection in step S1, the storage and update of all the programs in step S2 are not performed, and the output and display of the program image using the latest program image repeatedly as it is is not performed. Will be performed. FIG. 10 shows another embodiment of the teletext receiving apparatus according to the present invention. In this embodiment, an ordinary TV receiver is provided as an adapter instead of the head end of the CATV system as shown in FIG. It is characterized by the following.

In FIG. 10, teletext receiver 1a is provided as an adapter for TV receiver 60. The MPU which functions as a controller including a character decoder 6, a kanji storage unit 7, a program storage unit 8, a schedule creation unit 11 and a schedule execution unit 12, as in the head end of the CATV system in FIG.
10, an operation display unit 13, and a schedule storage unit 14 are provided.

The TV tuner 2 of FIG. 1 for the character decoder 6 uses the one built in the TV receiver 60. The RGB program image signal read and output from the program storage unit 8 is converted into a T
It can be supplied directly to the RGB input terminal of the V receiver 60. Since the teletext receiving apparatus 1a has no TV tuner and uses the TV receiver 60,
A tuner control unit 50 is provided so that the channel selection of the tuner of the TV receiver 60 can be remotely performed by the selection control by the MPU 10.

For this reason, as the TV receiver 60 to which the teletext receiver 1a according to the present invention shown in FIG. 10 can be attached, a TV receiver having a remote control terminal for selecting a channel is used. In addition, as for remote channel selection, a normal TV receiver 6
0 can select a channel by an infrared signal from a controller provided as an accessory. Therefore, by providing the tuner control unit 50 with the same channel selection function as the controller of the TV receiver 60, regardless of the signal line connection. Alternatively, the channel of the TV receiver 60 may be selected remotely.

The schedule creation unit 1 provided in the MPU 10
1 and the storage in the schedule storage unit 14 using the operation display unit 13 are the same as those in the embodiment of FIG. The schedule execution process by the schedule execution unit 12 of the MPU 10 in accordance with the program schedule registered in the schedule storage unit 14 is the same as in the embodiment of FIG.

By providing the teletext receiver 1a of the present invention as an adapter dedicated to the TV receiver 60,
By designating the function of the schedule creation section 11, for example, a program schedule of up to 10 programs as shown in FIG. 4 can be created and registered in advance. When watching teletext, the teletext receiving apparatus 1a is operated in the schedule execution mode, so that teletext switching of a plurality of programs over a plurality of channels according to the created program schedule is automatically performed.

The reception display function of the teletext receiving apparatus 1a according to the present invention for the TV receiver 60 in accordance with the program schedule serves as a kind of local mini broadcast station. . In order to further upgrade the function as a local mini broadcast station, a program schedule can be created and stored for each day of the week in the schedule storage unit 14, and a corresponding program schedule is automatically selected according to the day of the week. Thus, it is desirable to be able to provide a display service based on automatic switching display of teletext.

The same applies to the teletext receiving apparatus 1 of the present invention applied to the head end of the CATV system shown in FIG. Although the teletext receiving apparatus 1a of FIG. 10 is intended for teletext multiplexed to television broadcast, the display function by receiving and storing teletext multiplexed to FM broadcast is also required. Can be added.

[0073]

As described above, according to the present invention, a text broadcast program is scheduled and stored within a predetermined number range in an arbitrary channel, and the text broadcast is sequentially switched and viewed according to this schedule. When a teletext service is provided from the head end of the CATV system, a plurality of teletext program images can be provided using a single or a small number of TV bands, and compared to the conventional fixed program provision. Most of the teletext that the subscriber needs on a daily basis can be efficiently transmitted and used.

In the text broadcast according to the created program schedule, since the latest text broadcast is stored and updated in the memory and then read and transmitted, the latest text information can be always viewed. In addition, when the reception condition deteriorates and the text broadcast cannot be received normally, the text broadcast is displayed using the last image stored in the memory, and the text broadcast image is interrupted. Can be prevented.

Further, regarding the teletext according to the program schedule, even after the actual broadcast ends at night, the last stored teletext image can be read and displayed, and the teletext of substantially 24 hours can be read. Can provide service. On the other hand, in the teletext receiving apparatus according to the present invention dedicated to a TV receiver, as in the case of the CATV system, switching of teletext according to a program schedule for a plurality of programs on an arbitrary channel within a predetermined number of programs. The display is performed, and in the case of watching teletext, many teletexts can be efficiently viewed without requiring operations such as channel selection and program selection.

[Brief description of the drawings]

FIG. 1 is a block diagram of a teletext receiving apparatus of the present invention used in a head end of a CATV system.

FIG. 2 is an explanatory diagram of an operation display unit in FIG. 1;

FIG. 3 is an explanatory diagram of a program schedule created and registered in FIG. 1;

FIG. 4 is an explanatory diagram of a program schedule deletion process in FIG. 1;

FIG. 5 is an explanatory diagram of a schedule confirmation screen of FIG. 1;

FIG. 6 is an explanatory diagram of the contents of a program image received on one channel of teletext broadcasting.

FIG. 7 is a flowchart of a reception process in FIG. 1;

FIG. 8 is a flowchart (continuation) of the receiving process of FIG. 1;

FIG. 9 is a flowchart of a schedule execution process of FIG. 8;

FIG. 10 is a block diagram of the teletext receiving apparatus of the present invention used in a TV receiver.

[Explanation of symbols]

 1, 1a: Teletext broadcast receiving device 2: TV tuner 3: TV antenna 6: Character decoder 7: Kanji storage unit (ROM) 8: Program storage unit (RAM) 10: MPU (controller) 11: Schedule creation unit 12: Schedule Execution unit 13: Operation display unit 14: Schedule storage unit (EEPROM) 15: RGB / NTSC conversion unit 16: TV modulator 17: Channel setting unit 21: Monitor 22: Alarm receiving panel 24: Display unit 25: Display selection key 26 : Schedule number LED 27: Channel LED 28: Program number LED 29: Page LED 30: Display time LED 31a, 31b: Shift key 32: Memory key 33: Start key 48: RGB output unit 50: Tuner control unit 60: TV receiver

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04H 1/00 H04N 7/10

Claims (6)

[Claims] A character broadcast receiving apparatus for receiving and reproducing a character broadcast multiplexed on a TV broadcast, an FM broadcast, or the like, comprising a set of page-based character image information from a received signal of the multiplexed character broadcast. A reception decoding unit for restoring a program image; a program storage unit for storing the program image restored by the reception decoding unit according to classification by channel number and program number; and grouping of one or more programs by specifying a channel and a program number A schedule creator that creates a program schedule, a schedule storage unit that stores the program schedule created by the schedule creator, and a program schedule in the schedule storage unit.
A schedule execution unit for restoring the corresponding program image by the channel selection control of the reception decoding unit and storing the restored program image in the program storage unit, and reading out the program image stored in the program storage unit, A teletext receiving device comprising: a television signal conversion unit that converts a program image read from a program storage unit into a television signal of a predetermined channel band and transmits the television signal. 2. The teletext receiving apparatus according to claim 1, wherein the schedule creating unit further designates a display time of the program image in page units and stores the designated display time in a schedule storage unit. A character broadcast receiving apparatus characterized in that at the time of reading each of the program images, reading of images in page units over the display time is sequentially performed. 3. The teletext receiving apparatus according to claim 2, wherein the schedule execution unit executes the program image restored by the channel selection control of the reception decoding unit based on a designated channel and a program number. A teletext receiving apparatus, characterized in that, after being stored and updated in a storage unit, the updated program image is read out in page units, converted into a television signal by the television signal conversion unit and transmitted, and transmitted. 4. The teletext receiving apparatus according to claim 3, wherein the schedule execution unit does not restore a program image when the reception decoding unit is selected and controlled based on a designated channel and a program number. In this case, the program image already stored in the program storage section is read out, converted into a television signal by the television signal conversion section, and transmitted. 5. The teletext receiving apparatus according to claim 1, wherein a nonvolatile memory is used for said schedule storage unit. 6. A text broadcast receiving apparatus for reproducing a multiplexed text broadcast from a tuner output signal selected by a TV receiver, the program comprising a set of page-based text image information from the tuner output signal. A reception decoding unit for restoring an image, a program storage unit for storing the program images restored by the reception decoding unit according to classification by channel number and program number, and one or more programs grouped by specifying a channel and a program number A schedule creation unit that creates a program schedule and specifies a display time for displaying a program image in page units; a schedule storage unit that stores the program schedule and the display time created by the schedule creation unit; According to the program schedule,
Under the control of channel selection of the TV receiver, a corresponding program image is restored by the reception decoding unit and stored in the program storage unit, and the program images stored in the program storage unit are sequentially read out, and each program image is read. A schedule execution unit for sequentially reading images in page units over the display time during the reading of the program image, and a program signal read from the program storage unit by the schedule execution unit to a video signal of the TV receiver. A teletext receiving apparatus comprising: a video output unit that supplies an input terminal.