JP2008154254A - Teletext receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reuse character information as recording search data or the like. <P>SOLUTION: In a teletext receiver which comprises a teletext decoder 20 for decoding character information from a received teletext signal and a control unit 22 which downloads the character information decoded by the decoder 20 to a RAM 26 for temporary storage, and in which the control unit 22 records on a recording medium a video signal of a recording program to be recorded, extracts program information relating to the recording program from the character information downloaded to the RAM 26 and superimposes the extracted program information on a recorded video image during playback, the control unit 22 comprises a ROM 24 storing a program for control and regarding all receivable broadcast stations, the ROM 24 stores a broadcast station and a page to display first program information to be broadcast on the day thereon in a television program guide showing program information of the broadcast station in association with each other as a table. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a teletext receiver. Specifically, among the character information sent from the broadcasting station, by downloading specific character information, the user can freely process and use the downloaded character information. In the case of TV program information, the title of the TV program to be recorded among the downloaded TV program information can be used as recorded program information.

  Teletext is a type of broadcasting system called teletext, and character information (character signals) such as characters and figures is digitized and multiplexed and transmitted on part of the vertical blanking period of the television signal. The multiplexed character information is decoded so that the original characters and figures can be displayed on a monitor (television screen).

  This teletext menu includes a TV program guide in addition to news, weather forecasts, stock information, and the like. Such teletext service is provided based on the display content unique to the broadcasting station.

  For example, according to the video tape recorder described in Patent Document 1, a program channel, a start date and time, an end time, a title, etc., which are temporarily recorded in the memory, are provided with means for writing to an IC memory mounted on a video cassette. Is input to the IC memory.

JP-A-6-52654 (pages 2 and 3 and FIG. 1)

  By the way, in the text broadcasting, the contents of the selected menu are usually displayed on a television monitor, and the user simply sees the contents and confirms the contents. For example, in a news program, you just see the news of the day on the screen and grasp the contents. The weather forecast is the same. TV programs are also used in the same way as newspaper TV columns as electronic program guides. Therefore, it is only necessary to confirm the broadcast time and program title of the channel (broadcast station) and, in some cases, the program content.

  As described above, conventionally, although the contents of the teletext are displayed on the screen, the display contents are not actively processed or used. This is because the main role can be fulfilled simply by confirming the contents displayed on the screen.

  However, if the content displayed on the screen can be processed or used, it is very convenient. For example, in the case of searching for recorded content in the case of a TV program, etc., if the title of the recorded program is recorded automatically at the same time, the target recorded program can be easily searched simply by searching for this program title. It is because it can grasp. That is, it is possible to omit the work of reproducing the recorded contents.

  Therefore, the present invention solves such a conventional problem, and is adapted to process and use information of teletext broadcasting. In particular, when a TV program is recorded, the program title is automatically set. It is another object of the present invention to provide a teletext receiver capable of recording in association with a recording medium.

  In order to solve the above-described problem, the teletext receiving device according to the present invention described in claim 1 is a teletext receiving device for receiving a teletext signal in which a video signal and text information are multiplexed and received. A decoder that decodes the character information from the received teletext signal and a control unit that downloads the character information decoded by the decoder to the memory means for temporary storage, and the control unit records or tries to record The video signal of the recorded program is recorded on a predetermined recording medium, the program information related to the recorded program is extracted from the character information downloaded to the memory means, and the extracted program information is superposed on the video during playback after recording. In the teletext receiving device to be paused, the control unit is provided with storage means for storing a control program, and the storage means can receive all the signals that can be received. In relation to the broadcast station, the broadcast station and the page on which the first program information broadcast on that day in the TV program guide showing the program information of the broadcast station is associated in advance and stored as a table. It is characterized by that.

  In the present invention, designated character information is downloaded, and the downloaded specific character information is used as index information. For example, when the character information is TV program information, the TV program to be recorded or to be recorded is recorded by the recording means, and the downloaded program information (program title) is stored in the memory means (memory) attached to the video cassette. IC or memory card).

  In this way, since the television program recorded in the video cassette and the program title correspond to each other, the recorded content can be easily searched using the recorded program title.

  In the present invention, a part of information of teletext is downloaded so that it can be reused.

  According to this, the program information of the TV program guide can be effectively used as the search information of the recording information, etc., especially as the character broadcast. In this case, since the recorded content can be confirmed only by the program information without reproducing and confirming the recorded content, the confirmation of the recorded content is facilitated, and the confirmation work can be completed in a short time. .

  Further, for all broadcast stations that can be received by the storage means, the broadcast station and the page on which the first program information to be broadcast on that day in the TV program guide showing the program information of the broadcast station is displayed in advance. In addition, since the teletext receiving device in which these are stored as a table is provided, the start page of the television program at the broadcasting station can be immediately searched by referring to the table.

  Next, an embodiment of the teletext receiving device according to the present invention will be described in detail with reference to the drawings. Since this character broadcast receiving apparatus is usually built in a VTR in many cases, a case where it is applied to a built-in character broadcast receiving apparatus will be described first.

  FIG. 1 is a system diagram showing an example of a teletext receiver 10 according to an embodiment of the present invention. A teletext (text signal) received by an antenna 12 is received by a tuner 14 at a target broadcast station. The demodulated video signal is supplied to the recording / reproducing unit 16. The recording / reproducing unit 16 includes a recording / reproducing circuit for loading a video cassette 18 into a video mechanism unit (not shown) and recording or reproducing a video signal on the loaded recording tape.

  Of the demodulated television signal, the character signal is supplied to the subsequent character signal decoder 20 to decode the character signal. A command such as which one of the decoded character signals is used is issued from the control unit 22 by the microcomputer. The control unit 22 is provided with a ROM (Read Only Memory) 24 in which a control program is stored and a RAM (Random Access Memory) 26 for temporarily storing decoded character information.

  The decoded character signal (character information or graphic information) is converted into a video display signal by an on-screen display (OSD) 28, and the converted video display signal is supplied on the monitor 29, so that the character information is displayed as a video. . The monitor 29 uses the screen of a television receiver.

  As the video cassette 18 described above, a video cassette with a memory is used. This is one in which a memory IC 19 using a semiconductor memory or the like is built in the cassette. When the video cassette 18 is loaded into the recording / reproducing unit 16, a contact (input / output contact) of the memory IC 19 and a device side are provided. The contact (input / output contact) 21 comes into contact, and information from the control unit 22 can be written into the memory IC 19. Of course, the information written in the memory IC 19 can be read and displayed on the monitor 29.

  Commands for instructing recording or receiving teletext can be input using a VTR operation key (not shown) provided on the recording / reproducing unit 16 or a remote controller 34. When the remote controller 34 is used, a command signal is sent to the control unit 22 via the receiving unit 32.

  FIG. 2 is an example of a display screen configuration when a teletext is received, and the example in the figure is a specific example of display contents of a television program guide. On the screen 36 shown in the figure, an area 38 for displaying the reception channel number and the current time is provided, and an area 41 for displaying the received broadcasting station name is provided. In addition, a one-day program guide that is actually broadcast on the broadcast station is displayed.

  In the figure, the head area 42 is an area for displaying the broadcast time, and a character string indicating the title of the broadcast program (in some cases, the contents of the program) is displayed in an area 44 after the broadcast time. A page number for displaying program information is also displayed. The user can search for a program to be viewed or check a broadcast time, a program title, or the like by using this television program guide (electronic program guide).

  Conventionally, only the contents of this TV program guide have been confirmed, and no further use has been made.

  In the present invention, this character information is further used. If a television program guide is illustrated as a character broadcast, for example, when a television program currently being viewed by a user is recorded, a recording mode is selected, so that the television program currently being viewed is displayed in the video cassette 18 of the recording / playback unit 16. Is recorded. Simultaneously with this recording process, a search process for the title of the recorded TV program is executed using the download data in the RAM 26.

  When the recorded TV program is found by the title search, the title of the program is extracted. The extracted program title can be temporarily stored in another area of the RAM 26, for example. The extracted program title is recorded in association with the recording medium.

  When a video cassette with a memory as shown in FIG. 1 is used as a recording medium, a program title is recorded in a built-in memory (memory IC) 19. As a result, there is a one-to-one relationship between the recording medium and the program title. If the program title is read from the memory IC 19, the recorded contents can be searched by the program title. In other words, the recorded contents can be searched easily and reliably in a short time without reproducing the recorded video.

  By supplying the extracted program title to the monitor 29 via the OSD 28, the program title can be superimposed on the video being recorded. As a result, the title of the program being recorded can be confirmed. Of course, it is possible to read the program title from the memory IC 19 and superimpose it on the monitor 29 even while the recorded recording tape is being reproduced.

  One embodiment of such title search processing and recording processing will be described with reference to FIG. This figure is a flowchart applied when recording a program currently being viewed.

  First, the received broadcast station (channel) number is stored in, for example, the RAM 26 (step 62). Next, the presence / absence of the recording mode is monitored (step 64). When the recording switch is turned on and the recording instruction signal is captured by the control unit 22, the first program to be broadcast on that day in the TV program guide of the receiving channel is displayed. A search page (start page) is searched (step 66).

  Here, the television program guide is almost always stored on a page that is completely different depending on the broadcasting station, and the program start page is not displayed on the guide screen in many cases. This is because the screen content and display content of teletext are left to the respective broadcasting stations and are not unified. Moreover, since there are more than several hundred broadcast stations, especially in Europe, it is not possible to easily search for TV program guides, that is, program start pages on the receiving channel, and it is also impossible to search simultaneously with recording. is there.

  Therefore, for all broadcast stations that can be received, the broadcast station and the TV program start page at the broadcast station are associated in advance, and these are prepared in the ROM 24 as a table. This is because if the selected broadcast station is known, the start page of the television program at that broadcast station can be immediately searched by referring to this table.

  For the above reasons, in step 66 in FIG. 3, the TV program start page of the channel is searched based on the channel number of the received broadcasting station. Even if the program start page is searched, the actually recorded program is not always posted on the page. Therefore, in order to search for the program that is actually recorded, the broadcast time displayed on the program page is referred to check the time (including the nearest broadcast time) that matches the recording start time (step 68). .

  Broadcast time display is not uniform among broadcast stations. This is because, for example, the hour and minute indicating the broadcast time are displayed in a colon (:) or simply displayed in a period (.). However, since the broadcast time display is almost always a 4-digit display (0700, 2415, etc.), the broadcast time is searched based on this 4-digit display.

  When the times match or are earlier than the recording time and there is a broadcasting time closest to the recording time, the character string existing in the area 44 following the broadcasting time display area 42 is the program title. This character string is extracted (step 70).

  The extracted character string is temporarily stored in another area of the RAM 26, and when other conditions are satisfied (for example, the condition that 15 minutes have passed since the recording start time), the extracted character string is controlled. It is recorded in the memory IC 19 through the part 22 and the contact 21. Of course, the extracted character string may be immediately recorded in the memory IC 19. The character string can be recorded with a header or the like, or can be recorded including the broadcast time and reception channel.

  When the broadcast time displayed on the program start page and the recording start time do not match, it is confirmed whether or not the next page exists as a program guide page (step 72). When the program guide page has a subpage structure, this subpage is searched as the next page. When the next page exists, the search page is set as the next page, and a matching search similar to step 68 is executed (steps 74 and 76).

  This match search process is executed until the corresponding time exists (steps 78 and 72), and if they match, the program title extraction process shown in step 70 is transitioned to (step 70). However, since it is possible that the existence of the corresponding time is not confirmed even if 24 hours or more have elapsed from the recording start time, in this case, a process is performed in which the broadcast time posted on the last program page is regarded as the search time ( Step 80). At that time, the program title related to the regarded broadcast time is extracted as program information.

  In many cases, a program page is posted over a plurality of pages, but in rare cases, the program page may end with only one page. In such a case, the next page does not exist in step 72. In this case, as an inevitable process, the process proceeds to step 80, where the program title related to the last broadcast time posted on the first program page is convenient. It is used as a title for recorded programs.

  In addition, the search time is limited to 24 hours because the program guide may be posted over a plurality of days of the week, so when searching for 24 hours or more, the program title at the same time on the next day (in another program) This is because there is a risk of extracting a lot).

  In the example of FIG. 3, the case of simultaneously recording a television program that is currently being received is described, but the same is true when a recording reservation is made, and the program of the designated channel is recorded when the reservation time comes. Therefore, the processing shown in FIG. 3 starts simultaneously with the start of recording. If the recording time matches the broadcast time, the program title is extracted and recorded in a memory means such as the memory IC 19.

  FIG. 4 shows another embodiment of the present invention. This figure shows a case where the recording / reproducing unit is configured separately, and usually the recording / reproducing unit in this case is the VTR 17. A video cassette 30 is loaded in the VTR 17, and as this video cassette 30, a video cassette with a memory is used as described above. In this example, a memory card (memory label) 40 described later is used as the memory.

  The memory card 40 has a transmission / reception function, and the above-described program title and the like are recorded in a semiconductor memory provided therein. Therefore, the control unit 22 of the receiving apparatus 10 ′ is provided with a transmission / reception unit 96 that can transmit and receive the extracted program title, and is provided with a transmission / reception antenna 98, so that communication with the memory card 40 can be performed.

  The recording instruction to the VTR 17 can be performed using the above-described remote controller 34, and can also be input from a keyboard or a personal computer (none of which is shown) connected to the receiving device 10 '. The present invention can be applied to such a separate configuration.

  FIG. 5 shows an example of use of the memory card 40 as an auxiliary storage device applicable to the video cassette 17 with memory. The memory card 40 is attached to the recess 31 provided in the casing of the video cassette 30. Data is read from and written to the memory card 40 in a non-contact manner.

  When the video cassette 30 with the memory card 40 attached is attached to the VTR 17, the antenna (not shown) disposed inside the VTR 17 and the memory card 40 attached to the video cassette 30 face each other. It becomes like this.

  The memory card 40 can be transmitted / received to / from an internal circuit via an antenna provided inside the VTR 17, and can also be transmitted / received to / from the receiving device 10 ′ outside the VTR 17, that is, via the transmitting / receiving antenna 98. Yes. By enabling transmission / reception with the internal circuit, when using the VTR 17 independently of the receiving device 10 ′, program information demodulated inside the VTR is recorded in the memory card 40.

  The memory card 40 is configured as shown in FIG. 6, and the signal RFA received by the antenna 401 is supplied to the tuning circuit 402 and the power supply circuit 420. In the tuning circuit 402, a modulation signal MAR having a predetermined carrier frequency is selected from the signal RFA supplied from the antenna 401. The modulation signal MAR obtained by the tuning circuit 402 is amplified to a predetermined level by the amplification circuit 403 and then supplied to the demodulation circuit 404. In the demodulation circuit 404, the modulated signal MAR is demodulated into a received data signal DMR. Received data signal DMR is supplied to microcomputer 410 via communication control circuit 405.

  A ROM 411 is connected to the microcomputer 410, and each part of the memory card 40 is controlled according to a control program stored in the ROM 411. In addition, an EEPROM (Electrically Erasable and Programmable Read Only Memory) 412 is connected to the microcomputer 410 and stored in the program information EEPROM 412 such as the supplied program title. When the program information stored in the EEPROM 412 is read by the microcomputer 410 and the transmission data signal DMS is generated, the transmission data signal DMS is supplied to the modulation circuit 406 via the communication control circuit 405.

  In the modulation circuit 406, the supplied transmission data signal DMS is modulated into a signal having a predetermined carrier frequency. The modulation signal MBS obtained by the modulation circuit 406 is amplified to a signal level necessary for communication by the amplification circuit 407 and then supplied to the antenna 401, and the modulation signal MBS having a carrier frequency is transmitted from the antenna 401.

  In the power supply circuit 420, energy is extracted by using electromagnetic coupling between the antenna 401 and an antenna (not shown) inside the VTR 17, and electric power required by the memory card 40 can be generated.

  The video cassette with memory is illustrated as the recording medium, but when a normal video cassette without memory is used, the program title may be recorded on a recording tape. A disc-shaped recording medium can be used instead of the video cassette.

  Other than the TV program information described above, the character information to be downloaded and used can be considered.

  The present invention is extremely suitable when applied to a teletext receiver built in a VTR.

It is a systematic diagram of the principal part which shows one Embodiment of the teletext receiver which concerns on this invention. It is a figure which shows the display content of a television program guide. It is a flowchart which shows the example of a program search process. It is a systematic diagram of the principal part which shows other embodiment of the teletext receiver which concerns on this invention. It is a perspective view of a video cassette with a memory. It is a block diagram of a memory label.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10 '... Text broadcast receiving device, 20 ... Decoder for text broadcast, 26 ... Memory for temporary storage of program data, 22 ... Control part, 16 ... Recording / reproducing part, 17, 18 ... video cassette, 19 ... memory IC, 40 ... memory label

Claims (8)

A teletext receiving device for receiving a teletext signal in which a video signal and text information are multiplexed and transmitted,
A decoder for decoding character information from the received teletext signal;
A controller for downloading the character information decoded by the decoder to a memory means for temporary storage;
The control unit is
Record a video signal of a recorded program to be recorded or to be recorded on a predetermined recording medium,
Of the character information downloaded to the memory means, program information relating to the recorded program is extracted,
In the teletext receiver that superimposes the extracted program information on the video during playback after recording,
In the control unit,
Storage means for storing a control program is provided,
The storage means is
For all broadcast stations that can be received, the broadcast station is associated in advance with a page on which the first program information broadcast on that day of the TV program guide showing the program information of the broadcast station is displayed. A teletext receiving device characterized in that it is stored as a table.   2. A teletext receiver according to claim 1, wherein the extracted program information is stored in a memory means built in a recording medium outside the receiver.   3. The teletext receiver according to claim 2, wherein when the recording medium is a video cassette with a memory, program information relating to the recorded program is recorded in the memory.   3. The teletext receiver according to claim 2, wherein when the recording medium is a video cassette without a memory, program information relating to the recorded program is recorded on a recording tape.   2. The teletext receiving device according to claim 1, wherein the program information relating to the recorded program includes at least a title of the recorded program.   2. A teletext receiver according to claim 1, wherein said memory means is a built-in type or a separate type.   The use of the separate type memory means, wherein the control unit is provided with a data transmission unit, and the recorded program information can be transmitted to the outside through the data transmission unit. The teletext receiving device according to 1.   The storage unit provided in the control unit stores page information for displaying the TV program of the reception channel in advance, and when a recording instruction or recording reservation is made, a TV program display page corresponding to the reception channel is displayed. 2. The teletext reception according to claim 1, wherein the title information of the TV program that is searched based on the page information and matches the recording time or the recording reservation time is recorded as program information. apparatus.

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