JPS58209277A - Character broadcasting receiver - Google Patents
Character broadcasting receiverInfo
- Publication number
- JPS58209277A JPS58209277A JP57093429A JP9342982A JPS58209277A JP S58209277 A JPS58209277 A JP S58209277A JP 57093429 A JP57093429 A JP 57093429A JP 9342982 A JP9342982 A JP 9342982A JP S58209277 A JPS58209277 A JP S58209277A
- Authority
- JP
- Japan
- Prior art keywords
- program
- cursor
- data
- signal
- page number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
- H04N7/0255—Display systems therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
- H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はテレビジョン信号の垂直帰線消去期間などの未
使用領域に文字や図形などの情報を重畳して送られて来
る文字信号を受信しこれを−Ｈメモリに記憶したのちこ
のメモリから読み出しＣ表示する文字放送受信機に関す
るものであり、特に本発明は斯種の文字放送受信機の番
組選択法しで係るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention receives character signals sent by superimposing information such as characters and graphics on unused areas such as the vertical blanking period of a television signal, and stores the received character signals in -H memory. The present invention relates to a teletext receiver that stores programs and then reads them out from the memory and displays them. Particularly, the present invention relates to a program selection method for such a teletext receiver.
瓜国の文字放送（パターン方式）の国内統一方式として
昭和５５年度電波技術審議会最終答１１目で基いて作成
されたＮＨＫＣ５６方式がある６、この方式によると、
文字放送の番組番号及びページ番号は０から９９までの
１００番組１００ページとされておシ、この番組番号及
びページ番シタの選択はテンキー人力による選択法が多
かっり、。The NHKC56 system, which was created based on the 11th final answer of the Radio Technology Council in 1982, is the domestic standard system for teletext broadcasting (pattern system) in Uruguay.6 According to this system,
The program numbers and page numbers of teletext broadcasting are 100 programs and 100 pages from 0 to 99, and the selection of these program numbers and page numbers is often done manually using a numeric keypad.
このため番組選択時の操作が填雑で誤操作の原因となり
易く、またキースイッチの数が多くなるとともに部品点
数が増え、そｎ故生産コストが１−かり受信機の価格が
高くなり文字放送の普及を妨げる虞れがあった。For this reason, the operations when selecting a program are complicated and can easily cause erroneous operations, and as the number of key switches increases, the number of parts also increases.As a result, the production cost increases by 1 -, and the price of the receiver increases. There was a risk of hindering its spread.
−人力による選択方式をとらず、表示装置に表示された
番組索引表内の番組番号及びページ番号を例えばアップ
・ダウンキーによるカーソル移動で選択することにより
、誤操作防市、送出外番組選択と生産コストの低下を図
り、操作性のよい低価格受信機を提供することを目的と
している。- By selecting the program number and page number in the program index displayed on the display device by moving the cursor using up and down keys, for example, without using a manual selection method, it is possible to prevent erroneous operation, select and produce programs that are not broadcast. The aim is to reduce costs and provide a low-cost receiver with good operability.
以下本発明を図面に示す実施例とともに説明する。本実
施例では上記目的を達成する之めに、文字放送受信機に
送出中の番組を表わす番組コード及びページコードをア
ドレスとしてそのアドレスに該当する文字または図形パ
ターン及び操作の案内をするためのインフォメーション
メツセージを発生するためのキャラクタＲＯＭ ′ｆｆ
：設け、増作の制御はプログラムにより行なっている。The present invention will be described below with reference to embodiments shown in the drawings. In this embodiment, in order to achieve the above purpose, the program code and page code representing the program being sent to the teletext receiver are used as addresses, and the character or graphic pattern corresponding to the address and information for guiding the operation are provided. Character ROM 'ff for generating messages
:The establishment and increase in production are controlled by a program.
また本実施例では表示装置ＫＥＬ（ニレクロ・ルミネッ
センス）パネルを用い、文字放送の映像のみを表示でき
るようにしているが、それ以外１ても一般のテレビジョ
ン受像管や液晶表示装置等の他の表示装置にももちろん
適用できるものである。Furthermore, in this embodiment, a display device KEL (Nirekuro Luminescence) panel is used to display only teletext images, but other than that, other devices such as general television picture tubes and liquid crystal display devices are also used. Of course, it can also be applied to display devices.
第１図において、■はアンテナ、２はチューナ、３は映
像検波回路、４は同期分離回路、５は制御信号発生回路
、６は文字信号抜き取り回路、７はバッファメモリ、８
はテータノ（ス、９はアドレスバス、１０は制御用ＲＯ
Ｍ、１１は制御用■ぜ、へＭ、Ｉ２ ｔｒｉ Ｃｐ Ｕ
（中央制御Ｍ］装Ｆ／ ）、１８Ｂキ−ｙラクタＲＯ
Ｍ、＋４はキー人力装置、＋５はノぐターンメモリ、１
６はカラーメモリ、１７はｐ−ｓ（・ぐラレルーシリア
ル変換）／フトレジスタ、１８は色コード変換回路、１
９はＥＬ駆動用信砂混合回路、２０はＥＬパネルである
。In FIG. 1, ■ is an antenna, 2 is a tuner, 3 is a video detection circuit, 4 is a synchronization separation circuit, 5 is a control signal generation circuit, 6 is a character signal extraction circuit, 7 is a buffer memory, and 8
is the data bus, 9 is the address bus, and 10 is the control RO.
M, 11 is for control ■ze, go M, I2 tri Cp U
(Central control M] installation F/), 18B key y Rakuta RO
M, +4 is key human power device, +5 is nog turn memory, 1
6 is a color memory, 17 is a p-s (・gurareru serial conversion)/ft register, 18 is a color code conversion circuit, 1
9 is a sand and sand mixing circuit for driving EL, and 20 is an EL panel.
上記各回路等より構成される文字数送受イｉ−機におい
て、アンテナ１より入力された文字信号を含むテレビジ
ョン信号がチューナ２に供給され・ここで所望とするテ
レビジョン信号が選局受信されこれが映像検波回路３に
供給されて中間周波増幅及び映像検波されたのち、同期
分離回路４及び文字信号抜き取シ回路６に入力される。In the character transmitting/receiving device consisting of the above circuits, etc., the television signal including the character signal inputted from the antenna 1 is supplied to the tuner 2, where the desired television signal is selected and received. After being supplied to the video detection circuit 3 where it undergoes intermediate frequency amplification and video detection, it is input to the synchronization separation circuit 4 and the character signal extraction circuit 6.
同門分離：１１１路４では、テレビジョン映像信号から
同期信号が分離され、制御信号発生回路５に入力される
。一方丈、字信号抜き取シ回路６ではこのテレビジョン
映像信号から制御信号発生回路５からの制御信号に基い
て文字信号だけが抜き取られ、文字データとしてバック
アメモリ７に書き込まれる。ノくツファメモ１７７ Ｋ
書き込まれた文字データはデータノくス８を介してＣＰ
Ｕ Ｉ ２に読み出される。この読み出された文字デ
ータはＣＩ’ＵＩ２Ｄでより解読され、キー人力装置１
４ｉ／ζより指定された番組コードと一致したときのみ
文字データがパターンメモリ１５やカラーメモリ１６に
記憶保持される。そしてパターンメモリ１５に蓄積され
たデータは適当なタイミングでＰ−Ｓシフトレジスタ１
７へ読み出されパラレル−シリアル変換されてＥＬ駆動
用信号混合回路１７へ送出される。At the same gate separation: 111 path 4, the synchronization signal is separated from the television video signal and inputted to the control signal generation circuit 5. On the other hand, a length and character signal extraction circuit 6 extracts only character signals from the television video signal based on the control signal from the control signal generation circuit 5, and writes them into a backup memory 7 as character data. Nokutsufa Memo 177K
The written character data is transferred to the CP via data node 8.
It is read out in U I 2. This read character data is decoded by CI'UI2D, and the key human power device 1
The character data is stored and held in the pattern memory 15 and color memory 16 only when it matches the program code specified by 4i/ζ. The data stored in the pattern memory 15 is transferred to the P-S shift register 1 at an appropriate timing.
7, parallel-to-serial conversion is performed, and the signal is sent to the EL driving signal mixing circuit 17.
一方カラーメモリ１６へ蓄積されたデータは通常のＣＲ
Ｔ表示装置のようにカラーデータとして送出するのでは
なくＥＬ表示装置は明暗の２色しか表示できないため、
コンシール−１１ｒ （Ｃｌフラノンングのデータだけ
を取り出−ｒためシて色コード変換回路１８に入力され
てコンシールまたはフラッシング信号に変換されてＥＬ
駆動用信号混合回路１９へ入力される。ＥＬ駆動用信号
混合回路Ｉ９てはＰ−Ｓシリアルレジスタ１７より送ら
れて来たデータをＥＬパネル２０へ送出するとともに、
色コード変換回路１８で指定されたコンシール°または
フラッシングの制御信号によりＥＬパネル２０表示され
たパターンデータを表示制御する、。On the other hand, the data stored in the color memory 16 is a normal CR.
Unlike T display devices, which send out color data, EL display devices can display only two colors, light and dark.
Conceal 11r (Only the data of the Cl flannel is extracted, inputted to the color code conversion circuit 18, converted to a conceal or flushing signal, and then EL
The signal is input to the driving signal mixing circuit 19. The EL driving signal mixing circuit I9 sends the data sent from the P-S serial register 17 to the EL panel 20, and
The display of the pattern data displayed on the EL panel 20 is controlled by the concealment or flushing control signal specified by the color code conversion circuit 18.
以上が表示装置ＫＥＬパネルを用いた従来型の文字放送
受信機の構成と動作説明であり、プログラム的には第２
図に示すフローチャートに相当する。The above is an explanation of the configuration and operation of a conventional teletext receiver using a KEL panel display device.
This corresponds to the flowchart shown in the figure.
第３図及び第４図は本発明の文字放送受信機の１実施例
の動作を説明するフローチャートであって、本実施例で
は第２図に示す動作にさらシて第３図及び第４図に示す
ｅ１作を実行する機能を付加したものである。回路的に
は第１図におけるキー人力装置１４を特に第５図の如く
構成し、捷た番組表を作成するための数字及びインフォ
メーションメツセージを発生させるキャラクタＲＯＭ
Ｉ ８を付加している。3 and 4 are flowcharts for explaining the operation of one embodiment of the teletext receiver of the present invention. In this embodiment, the operation shown in FIG. 2 is followed by the operation shown in FIGS. It has an added function to execute the e1 work shown in . In terms of circuitry, the key human power device 14 in FIG. 1 is constructed as shown in FIG.
I 8 is added.
次に第′３図及び第４図に示すフローチャートに従って
不実施例の動作を説明すると、ＰＯＷＥＲオンによりプ
ログラムのフラッグ及びＩ／１０ポー）２１の初期設定
を行なう。その後同期分離回路４により抜き取られた垂
直同期信号の割り込みによりプログラムが開始される。Next, the operation of the non-embodiment will be described according to the flowcharts shown in FIGS. 3 and 4. When the POWER is turned on, the program flag and the I/10 port 21 are initialized. Thereafter, the program is started by an interruption of the vertical synchronization signal extracted by the synchronization separation circuit 4.
捷ず送出されて来るすべてのデータをバッファメモリに
取り込みＣＰＵ］２により解読され、いま例えば第６図
に示す番組索引パケソ）（ＰＩＰ）と判断された場合、
ＴＰＩ−１〜ＴＰＩ５−２７での１５番組分の番組番号
データが制御用ＲＡ Ｍ Ｉ Ｉに読み込ま、机、また
番組制御バケット（ｐＣｐ）の場合、ＦＡＩとＰＡ２の
ページ番号データが番組番号順ンて配列して制御用ＲＡ
ＭＩＩＫ読み込捷れる。次に横スクロール処理のルーチ
ンは横スクロール番組が選択されてないのでジャンプす
る。キースキャンルーチンでは初期設定で番組表作成フ
ラッグを出力して番組表表示ルーチンへ飛ぶ。番組表表
示ルーチンでは先に制御ＲＡ Ｍ ｌ ７に読み込まれ
た番組番号データをアドレスとしてそのアドレスに相当
する数字をキャラ２りＲＯＭ １３より読み出してイン
フォメーションメツセージとともに第７図ｉ’ａ） ＆
て示すように番組索引表ｉＥＬパネル２ｏに表示し、カ
ーソル表示ルーチンへ飛ぶ。カーソル表示ルーチンでは
番組選択のカーソルを表示するが、初期設定では一番小
さい番組番号の位置（てカーソルが設定され、表示制御
ルーチンへ飛ぶ。表示制御ルーチンは縦スクロールやリ
ビールなどの表示制御を行なうためのものであり、番組
が選択さ！１でいない場合はそのままスタートへ戻る。All the data that is sent without being edited is taken into the buffer memory and decoded by the CPU 2, and if it is determined that the program index (PIP) is shown in FIG. 6, for example,
The program number data for 15 programs from TPI-1 to TPI5-27 is read into the control RAM I, and in the case of the program control bucket (pCp), the page number data of FAI and PA2 are read in program number order. Arrange the control RA
I can read MIIK. Next, the horizontal scroll processing routine jumps because no horizontal scroll program is selected. In the key scan routine, the program guide creation flag is output by default and the program jumps to the program guide display routine. In the program list display routine, the program number data previously read into the control RAM 7 is used as an address, and the number corresponding to that address is read out from the character 2 ROM 13 and an information message is sent along with the program number data in FIG. 7 i'a) &
The program index table is displayed on the iEL panel 2o as shown, and the program jumps to the cursor display routine. The cursor display routine displays a cursor for program selection, but by default the cursor is set at the position of the lowest program number and the program jumps to the display control routine.The display control routine performs display controls such as vertical scrolling and reveals. If the program is not selected!1, the program returns to the start.
以ド垂直同１υ］信号の割シ込みによシブログラムが再
スタートされ、先に表示された番組番号表中のＵＰ、Ｄ
ＯＷ Ｎキーによりカーソル移動して番組選択をする
。この番組選択は選択したい番組番号の位置筐で１．Ｊ
Ｐ、ｌｌ０ＷＮ千−により移動させ受信キーまたはペー
ジキーを押す。このときページキーが押されると番組番
号で指定されるところのページ番号データが予め蓄えら
れている制御用ＲＡＭより読み出され、ページ番号デー
タをアドレスとしてそのアドレスに相当する数字をキャ
ラクタＲＱＭＩ３ｊり読み出し、インフォ纂、−シ冒ン
メッセージとともに第７図；ｂ）に示す如＜ＥＬパネル
２０に表示される。表示されたページ番号を前述の番組
番号を選択したときと同様にカーソル移動により選択し
、受信キーを押すと番組番号とページ番号が選択され受
信状態になる。また番組番号を選択したのち、すぐに受
信キーを押すと、ページ番号は指定されずに受信状態に
なる。こうして番組番号及びページ番号が指定されると
、指定された番組の番組制御パケット（Ｐｃｐ）が送ら
れて来るのを待ち、指定された番組のＰ ＣＰが来たこ
とをＣＰＵ］２が判断すると、それ以後のデータをすべ
て取り込み制定の処理を行ないパターンメモリー５及び
カラーメモリ１６に読み込捷れ適尚なタイミングで読み
出し表示される。The sibling program is restarted by the interrupt of the [vertical same 1υ] signal, and UP and D in the program number table that was displayed earlier
Select a program by moving the cursor using the OW N keys. To select this program, select 1. J
Move by P, ll0WN100- and press the receive key or page key. At this time, when the page key is pressed, the page number data specified by the program number is read out from the control RAM stored in advance, and the page number data is used as an address and the number corresponding to that address is read out by character RQMI3j. , Info Collection, and -shi Error messages are displayed on the EL panel 20 as shown in FIG. 7; b). When the displayed page number is selected by moving the cursor in the same manner as when selecting the program number described above and the reception key is pressed, the program number and page number are selected and the reception state is entered. Also, if you press the receive key immediately after selecting a program number, the page number will not be specified and the program will enter the receiving state. Once the program number and page number are specified in this way, the CPU]2 waits for the program control packet (Pcp) of the specified program to be sent and determines that the PCP of the specified program has arrived. , all subsequent data are taken in and processed, read into the pattern memory 5 and color memory 16, and read out and displayed at appropriate timing.
次に受信状態から番組索引表全表示するには、第５図に
示す［ＪＰキー２３、Ｄ ＯＷ Ｎキー２４の何れかを
キーインすることにより番組索引表を表示し、番組を選
択することができる。Next, to display the entire program index table from the reception status, press either the JP key 23 or the DOWN key 24 to display the program index table and select a program, as shown in FIG. can.
本発明の文字放送受信機によれば、以上のよう“ｌ
に文字信［寿中の特定の文字信号により番組索引表中の
番組番号及びページ番号をカーソル移動により選択し、
カーソルで指定さ７′また番組番号及びページ番号に基
いて受信できるようにしているため、操作が簡素化され
、送出されていない番組の誤選択を防止することができ
る、。According to the teletext receiver of the present invention, as described above, the program number and page number in the program index table are selected by moving the cursor according to the specific character signal of "1".
Since reception is possible based on the program number and page number specified with the cursor, the operation is simplified and it is possible to prevent erroneous selection of programs that have not been transmitted.
さらに本発明の文字放送受信機によれば、生産コストの
低下による受信機価格の低減を図ることができ文字放送
受信機の一般社会へのＷ１＆ 、＋、−促すことができ
る。Further, according to the teletext receiver of the present invention, it is possible to reduce the price of the receiver due to the reduction in production cost, and it is possible to promote the use of teletext receivers in the general society.
第１図は本発明の１実施例のブロック線図、第２図は従
来一般の文字放送受信機のｆｉｌＪ作説明のためのフロ
ーチャート、第３図及び第４図（１イ、発明の１実施例
の動作説明のためのフローチャート、第５図は同実施例
におけるキー人力装置の拡大平面図、第６図は文字信号
中のＰ Ｃ１）及び■・ＩＣのパケットの説明図、第７
図ｒａ）、（ｂ）は本発明の文字放送受信機によシＥＬ
パネルに表示された番組索引表の表示例ヲ示す図である
・
６１文＊ＩｆｋＪ号抜き取り回路、７ バッフｒ）モリ
、１０・・・制御用ＲＯＭ１１１・・・制御用ＲＡＭ、
＋ １・ＣＰＵ、Ｉ １−キャラクタＲＯＭ、１４・・
・キー人力装置、■５・・パターンメモリ、１６・・・
カラーメモリ、２０・・・ＥＬパネルFIG. 1 is a block diagram of one embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of filJ in a conventional general teletext receiver, and FIGS. Flowchart for explaining the operation of the example, FIG. 5 is an enlarged plan view of the key-powered device in the same example, FIG. 6 is an explanatory diagram of the PC1) and IC packets in the character signal, and FIG.
Figures ra) and (b) show the teletext receiver according to the present invention.
It is a diagram showing a display example of the program index table displayed on the panel. 61 sentences *IfkJ number extraction circuit, 7 buffer r) memory, 10... control ROM 111... control RAM,
+ 1-CPU, I 1-Character ROM, 14...
・Key manual device, ■5... Pattern memory, 16...
Color memory, 20...EL panel
Claims (1)
などの情報が重畳された文字信号を受信し、この文字信
号に同期したクロックパルスで」二記文字信号をメモリ
に記憶したのちこのメモリから上記文字信号を読み出し
表示する文字放送受信機において、送出中の番組番号及
びページ信号を検知しそれを表示する手段と、前記ペー
ジ番号をカーソルにて選択する手段とを具備し、文字信
号中の特定の文字信号によシ番組索引表を作成表示しそ
の番組索引表中の番組番号及びページ番号をカーソル移
動により選択し、カーソルで指定された番組番号及びペ
ージ番号に基いて受信できるようにしｔことを特徴とす
る文字放送受信機１．1. A character signal on which information such as characters and figures is superimposed is received during the vertical blanking period of a television signal, and the character signal is stored in a memory using a clock pulse synchronized with this character signal, and then from this memory. The teletext receiver for reading and displaying the character signal is provided with means for detecting and displaying the program number and page signal being transmitted, and means for selecting the page number with a cursor. Create and display a program index table based on a specific character signal, select a program number and page number in the program index table by moving the cursor, and enable reception based on the program number and page number specified with the cursor. A teletext receiver characterized by: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57093429A JPS58209277A (en) | 1982-05-31 | 1982-05-31 | Character broadcasting receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57093429A JPS58209277A (en) | 1982-05-31 | 1982-05-31 | Character broadcasting receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58209277A true JPS58209277A (en) | 1983-12-06 |
Family
ID=14082058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57093429A Pending JPS58209277A (en) | 1982-05-31 | 1982-05-31 | Character broadcasting receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58209277A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6221379A (en) * | 1985-07-22 | 1987-01-29 | Matsushita Electric Ind Co Ltd | Control equipment |
| EP0372384A2 (en) * | 1988-12-02 | 1990-06-13 | Matsushita Electric Industrial Co., Ltd. | Videotext receiver |
| GB2264426A (en) * | 1992-02-18 | 1993-08-25 | Pioneer Electronic Corp | Character broadcasting receiving set |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55156485A (en) * | 1979-05-23 | 1980-12-05 | Sony Corp | Character broadcast receiver |
| JPS5662491A (en) * | 1979-10-26 | 1981-05-28 | Sanyo Electric Co Ltd | Television receiver for character multiplex broadcasting |
-
1982
- 1982-05-31 JP JP57093429A patent/JPS58209277A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55156485A (en) * | 1979-05-23 | 1980-12-05 | Sony Corp | Character broadcast receiver |
| JPS5662491A (en) * | 1979-10-26 | 1981-05-28 | Sanyo Electric Co Ltd | Television receiver for character multiplex broadcasting |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6221379A (en) * | 1985-07-22 | 1987-01-29 | Matsushita Electric Ind Co Ltd | Control equipment |
| EP0372384A2 (en) * | 1988-12-02 | 1990-06-13 | Matsushita Electric Industrial Co., Ltd. | Videotext receiver |
| GB2264426A (en) * | 1992-02-18 | 1993-08-25 | Pioneer Electronic Corp | Character broadcasting receiving set |
| US5373324A (en) * | 1992-02-18 | 1994-12-13 | Pioneer Electronic Corporation | Program selecting and character broadcasting receiving set |
| GB2264426B (en) * | 1992-02-18 | 1995-10-25 | Pioneer Electronic Corp | Character broadcasting receiving set |
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