JPH06311453A - Television receiver - Google Patents
Television receiverInfo
- Publication number
- JPH06311453A JPH06311453A JP5096398A JP9639893A JPH06311453A JP H06311453 A JPH06311453 A JP H06311453A JP 5096398 A JP5096398 A JP 5096398A JP 9639893 A JP9639893 A JP 9639893A JP H06311453 A JPH06311453 A JP H06311453A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- memory
- pulse
- television signal
- interpolation filter
- 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
Landscapes
- Television Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、第１の縦横比（例えば
３：４）の第１のテレビジョン（以下ＴＶと呼ぶ）信号
と、第２の縦横比（例えば９：１６）の第２のＴＶ信号
とが受信可能な前記第２の縦横比の画面を持つＴＶ受信
機に関する。The present invention relates to a first television (hereinafter referred to as TV) signal having a first aspect ratio (eg, 3: 4) and a second television signal having a second aspect ratio (eg, 9:16). The present invention relates to a TV receiver having a screen with the second aspect ratio capable of receiving two TV signals.
【０００２】[0002]
【従来の技術】図５は、９：１６の縦横比の画面を持つ
従来の第２世代ＥＤ（Ｅnhanced Ｄefinition ）ＴＶ放
送対応ＴＶ受信機の構成を示す。また、図６及び７は、
時間軸圧縮変換（４→３変換）の原理を示す。図８及び
９は、走査線数変換（３→４変換）の原理を示す。2. Description of the Related Art FIG. 5 shows a configuration of a conventional second generation ED (Enhanced Definition) TV broadcasting-compatible TV receiver having a screen with an aspect ratio of 9:16. Also, FIGS.
The principle of time axis compression conversion (4 → 3 conversion) will be described. 8 and 9 show the principle of scanning line number conversion (3 → 4 conversion).
【０００３】現在、高画質化，ワイド画面化を目指し、
３：４の縦横比の現行ＴＶ方式と両立性を持った第２世
代ＥＤＴＶレタ―ボックス形式に対応するＴＶ受信機の
開発が進められている。前記レタ―ボックス形式は、送
信側で画面の有効走査線数を３６０本とし、上下残りの
１２０本の走査線部分に付加情報を重畳している。この
ためＴＶ受信機側では、送信されて来た３６０本の有効
走査線数を４８０本に変換する走査線変換処理が必要と
なる。一方、９：１６の縦横比の画面を有する第２世代
ＥＤＴＶ放送対心のＴＶ受像機は、３：４の縦横比の現
行ＴＶ信号を受信した場合に画像が横長となることを防
止するため、画面の水平方向に時間軸圧縮する時間軸圧
縮処理が必要である。At present, aiming at high image quality and wide screen,
A TV receiver compatible with the second-generation EDTV letterbox format compatible with the current TV system with an aspect ratio of 3: 4 is being developed. In the letter box format, the number of effective scanning lines on the screen is 360 on the transmission side, and additional information is superimposed on the remaining 120 scanning lines above and below. Therefore, the TV receiver side needs a scanning line conversion process for converting the transmitted 360 effective scanning lines into 480 effective scanning lines. On the other hand, the second-generation EDTV broadcasting antipodal TV receiver having the screen with the aspect ratio of 9:16 prevents the image from becoming horizontally long when the current TV signal with the aspect ratio of 3: 4 is received. It is necessary to perform time axis compression processing for time axis compression in the horizontal direction of the screen.
【０００４】まず、図５，６及び７に基づき、前記時間
軸圧縮処理（４→３変換）を簡単に説明する。入力信号
５５１は、３：４の縦横比である現行ＴＶ信号である。
この入力信号５５１をそのまま縦横比の画面に表示する
と、図６の６０１に示す原画が、同図６０２に示す如く
横長の画像となってしまう。そこで、図６の６０３に示
す如く、ＴＶ画面の水平方向に対して時間軸圧縮しなけ
ればならない。この時間軸圧縮処理を行なう時間軸圧縮
回路５０１は、第１の補間フィルタ５０２と次段の第１
のメモリ５０３から構成される。First, the time axis compression process (4 → 3 conversion) will be briefly described with reference to FIGS. 5, 6 and 7. Input signal 551 is a current TV signal with an aspect ratio of 3: 4.
When this input signal 551 is displayed on the screen with the aspect ratio as it is, the original image 601 in FIG. 6 becomes a horizontally long image as shown in FIG. 602. Therefore, as indicated by reference numeral 603 in FIG. 6, the time axis must be compressed in the horizontal direction of the TV screen. The time-axis compression circuit 501 that performs this time-axis compression processing includes a first interpolation filter 502 and a first-stage first-stage filter.
Memory 503.
【０００５】図５及び７に基づき、前記時間軸圧縮処理
を、更に詳しく説明する。第１の補間フィルタ５０２
は、入力信号５５１における４つのデ―タから３つに変
換する。図７の観点から述べると、７０１に示す入力信
号は、第１の補間フィルタ５０２の入力信号５５１に対
応する。第１の補間フィルタ５０２は、入力信号７０１
の５つのデ―タａ0 ，ａ1 ，ａ2 ，ａ3 ，ａ4 から７０
２に示すａ5 ，ａ6 のデ―タ並びにダミ―デ―タＸを作
りだす。そして、そのデ―タａ5 ，ａ6 とダミ―デ―タ
Ｘをデ―タａ0 ，ａ4 と共に出力する。第１のメモリ
（図５・５０３）では、入力デ―タａ0 ，ａ5 ，ａ6 ，
Ｘ，ａ4 の内からダミ―デ―タＸを除く。従って、第１
のメモリ５０３は、有効デ―タａ0 ，ａ5 ，ａ6 ，ａ4
のみを出力する。図５でいえば出力５５３となる。以上
により時間軸圧縮処理が行なわれる。The time base compression process will be described in more detail with reference to FIGS. First interpolation filter 502
Converts four data in the input signal 551 into three. From the perspective of FIG. 7, the input signal 701 corresponds to the input signal 551 of the first interpolation filter 502. The first interpolation filter 502 has an input signal 701.
5 data items a 0 , a 1 , a 2 , a 3 , a 4 to 70
The data of a 5 and a 6 shown in 2 and the dummy data X are created. Then, the data a 5 and a 6 and the dummy data X are output together with the data a 0 and a 4 . In the first memory (FIG. 5, 503), input data a 0 , a 5 , a 6 ,
Dummy data X is excluded from X and a 4 . Therefore, the first
Of the valid data a 0 , a 5 , a 6 , a 4
Output only. In FIG. 5, the output is 553. The time axis compression process is performed as described above.
【０００６】次に、図５，８及び９に基づき、走査線数
変換処理（３→４変換）を簡単に説明する。第２世代Ｅ
ＤＴＶ信号５５４は、走査線変換回路５０４に入力され
る。走査線変換回路５０４は、第２のメモリ５０５と次
段の第２の補間フィルタ５０６から構成される。第２世
代ＥＤＴＶレタ―ボックス形式の送信信号は、上述した
様に主画面を３６０本とし上下残りの１２０本の走査線
部分に付加情報を重畳している。従って、図８に示す如
く、ＴＶ受信機側で有効走査線数の３６０本を４８０本
に変換する走査線数変換処理が必要である。Next, the scanning line number conversion processing (3 → 4 conversion) will be briefly described with reference to FIGS. Second generation E
The DTV signal 554 is input to the scan line conversion circuit 504. The scanning line conversion circuit 504 includes a second memory 505 and a second interpolation filter 506 at the next stage. As described above, the transmission signal of the second generation EDTV letter box format has the main screen of 360 lines and the additional information is superimposed on the remaining 120 scanning lines above and below. Therefore, as shown in FIG. 8, a scanning line number conversion process for converting the effective scanning line number of 360 to 480 on the TV receiver side is necessary.
【０００７】図５及び９に基づき、前記走査線数変換処
理を、更に詳しく説明する。第２世代ＥＤＴＶ信号５５
４が入力される第２のメモリ５０５は、複数のラインデ
―タを一括保持し、これを次段の第２の補間フィルタ５
０６のタップ入力５５５とする。第２の補間フィルタ５
０６は、３本のラインを４本に変換する補間処理を行な
う。図９の観点から述べると、信号９０１は第２のメモ
リ５０５の出力であり、複数のラインデ―タａ，ｂ，
ｃ，ｄ，ｅとなる。第２の補間フィルタ５０６は、３本
のラインから４本に変換し、９０２に示す如く、ａ，
ｂ′，ｃ′，ｎ′，ｄのデ―タとなる。次に、図示して
いない補助メモリでタイミングを調整し、９０３に示す
ａ，ｂ′，ｃ′，ｎ′，ｄを生成し、最終的に３６０本
の走査線を４８０本に変換する。図５でいえば、出力５
５６となる。以上により、走査線数変換処理が行なわれ
る。The scanning line number conversion process will be described in more detail with reference to FIGS. Second generation EDTV signal 55
The second memory 505 to which 4 is input holds a plurality of line data all at once, and stores the line data in the second interpolation filter 5 of the next stage.
The tap input 555 is 06. Second interpolation filter 5
At 06, interpolation processing for converting three lines into four lines is performed. From the viewpoint of FIG. 9, the signal 901 is the output of the second memory 505, and a plurality of line data a, b,
c, d, e. The second interpolation filter 506 converts three lines into four lines, and as shown in 902, a,
It becomes the data of b ', c', n ', d. Next, the timing is adjusted by an auxiliary memory (not shown) to generate a, b ', c', n ', and d shown at 903, and finally 360 scanning lines are converted into 480 lines. In FIG. 5, output 5
56. As described above, the scanning line number conversion process is performed.
【０００８】最後に、選択回路５０７は、現在入力され
ている信号が現行ＴＶ信号の場合は、信号５５３を選択
して出力信号５５７とする。一方、第２世代ＥＤＴＶ信
号の場合は、信号５５６を選択して出力信号５５７とす
る。Finally, the selection circuit 507 selects the signal 553 as the output signal 557 when the currently input signal is the current TV signal. On the other hand, in the case of the second generation EDTV signal, the signal 556 is selected and used as the output signal 557.
【０００９】この従来の第２世代ＥＤＴＶ放送対応ＴＶ
受信機には、時間軸圧縮回路５０１並びに走査線数変換
回路５０４に、それぞれ第１のメモリ５０３並びに第２
のメモリ５０５を具えている。This conventional second generation EDTV broadcasting compatible TV
The receiver includes a time axis compression circuit 501 and a scanning line number conversion circuit 504, a first memory 503 and a second memory 503, respectively.
Of memory 505.
【００１０】[0010]
【発明が解決しようとする課題】上記説明した様に時間
軸圧縮回路並びに走査線数変換回路にそれぞれ別個のメ
モリを所有している。このため、回路規模が増大しコス
ト増加を招いている。更に、入力信号が現行ＴＶ信号の
ときは、走査線数変換回路に用いているメモリが未使用
となる。同様に、入力信号が第２世代ＥＤＴＶ信号のと
きは、時間軸圧縮回路を用いているメモリが未使用とな
り、不経済である。As described above, the time axis compression circuit and the scanning line number conversion circuit have separate memories. For this reason, the circuit scale increases and the cost increases. Further, when the input signal is the current TV signal, the memory used in the scanning line number conversion circuit is unused. Similarly, when the input signal is the second generation EDTV signal, the memory using the time base compression circuit is unused, which is uneconomical.
【００１１】本発明は、１つのメモリで時間軸圧縮手段
のメモリと走査線数変換手段のメモリを兼用するＴＶ受
信機を提供することを目的とする。It is an object of the present invention to provide a TV receiver in which one memory serves as both the memory of the time base compression means and the memory of the scanning line number conversion means.
【００１２】[0012]
【課題を解決するための手段】（構成例１）第１の縦横
比で送られてくる第１のＴＶ信号と、第２の縦横比で送
られてくる第２のＴＶ信号とを受信する前記第２の縦横
比の画面を持つＴＶ受信機において、前記第１のＴＶ信
号または第２のＴＶ信号が入力され、前記第１のＴＶ信
号を受信したときには前記画面の水平方向に対して時間
軸を圧縮し、前記第２のＴＶ信号を受信したときにはそ
のままする時間軸圧縮用補間フィルタと、前記時間軸圧
縮用補間フィルタの出力が入力され、前記第２のＴＶ信
号を受信したときには前記画面の垂直方向に対して走査
線数を変換し、前記第１のＴＶ信号を受信したときには
そのまま出力する走査線数変換用補間フィルタとを具備
し、前記第１のＴＶ信号を受信したときには前記時間軸
圧縮用補間フィルタの出力からダミーデータを除き、前
記第２のＴＶ信号を受信したときには前記走査線数変換
用補間フィルタえの入力のためにデータを一括保持する
メモリを、前記時間軸圧縮用補間フィルタと前記走査線
変換用補間フィルタの間に接続する。Means for Solving the Problems (Structural Example 1) Receiving a first TV signal sent in a first aspect ratio and a second TV signal sent in a second aspect ratio. In the TV receiver having the screen with the second aspect ratio, when the first TV signal or the second TV signal is input and the first TV signal is received, time is applied to the horizontal direction of the screen. The time axis compression interpolation filter that compresses the axis and keeps the same when the second TV signal is received, and the output of the time axis compression interpolation filter are input, and the screen is displayed when the second TV signal is received. And a scanning line number conversion interpolation filter for converting the number of scanning lines in the vertical direction of the first TV signal and outputting the same as it is when the first TV signal is received, and the time when the first TV signal is received. Interpolation fill for axis compression The dummy data is removed from the output of the above, and when the second TV signal is received, a memory for collectively holding the data for the input of the scanning line number conversion interpolation filter is provided with the time axis compression interpolation filter and the scanning unit. Connect between interpolation filters for line conversion.
【００１３】（構成例２）第１の縦横比で送られてくる
第１のＴＶ信号と、第２の縦横比で送られてくる第２の
ＴＶ信号を受信する前記第２の縦横比の画面を持つＴＶ
受信機において、第１のパルスを発生する第１のパルス
発生回路と、第２のパルスを発生する第２のパルス発生
回路と、前記第１のＴＶ信号または第２のＴＶ信号が入
力されると共に書き込みクロックとして前記第１のパル
スが入力されるメモリと、前記メモリの出力が入力さ
れ、前記第２のＴＶ信号を受信したときには前記画面の
垂直方向に走査線数を変換し、前記第１のＴＶ信号を受
信したときにはそのまま出力する走査線数変換用補間フ
ィルタと、前記第１のＴＶ信号または第２のＴＶ信号の
到来によって、前記第１のパルスまたは前記第２のパル
スを選択して前記メモリの読み出し側端子に出力する選
択回路とを有し、前記選択回路は、前記第１のＴＶ信号
が到来したときは前記第２のパルスを出力し、前記第２
のＴＶ信号が到来したときは前記第１のパルスを出力
し、前記第２のパルスと前記第１のパルスの幅の比率
は、前記画面の水平方向に対する時間軸圧縮比率であ
る。(Structural Example 2) A first TV signal sent at a first aspect ratio and a second TV aspect ratio for receiving a second TV signal sent at a second aspect ratio. TV with screen
In the receiver, a first pulse generating circuit that generates a first pulse, a second pulse generating circuit that generates a second pulse, and the first TV signal or the second TV signal are input. At the same time, the memory to which the first pulse is input as a write clock and the output of the memory are input, and when the second TV signal is received, the number of scanning lines is converted in the vertical direction of the screen, When the first TV signal or the second TV signal arrives, the first pulse or the second pulse is selected according to the arrival of the scanning line number conversion interpolation filter when the TV signal is received. A selection circuit for outputting to a read side terminal of the memory, the selection circuit outputting the second pulse when the first TV signal arrives;
When the TV signal arrives, the first pulse is output, and the ratio of the widths of the second pulse and the first pulse is the time-axis compression ratio with respect to the horizontal direction of the screen.
【００１４】[0014]
【作用】（構成例１）前記時間軸圧縮用補間フィルタと
前記走査線数変換用フィルタの間に１つのメモリを接続
し、このメモリを前記第１のＴＶ信号を受信したときに
は、前記時間軸圧縮用補間フィルタの出力からダミーデ
ータを除く。そして、前記第２のＴＶ信号を受信したと
きには、前記走査線数変換用補間フィルタの入力のため
にデータを一括保持する。この様に１つのメモリで時間
軸圧縮手段のメモリと走査線数変換手段のメモリを兼用
する。(Structural Example 1) One memory is connected between the time axis compression interpolation filter and the scanning line number conversion filter, and when this memory receives the first TV signal, the time axis Dummy data is excluded from the output of the compression interpolation filter. Then, when the second TV signal is received, the data is collectively held for input to the interpolation filter for scanning line number conversion. In this way, one memory serves as both the memory of the time axis compression means and the memory of the scanning line number conversion means.
【００１５】（構成例２）第１のＴＶ信号を受信したと
きには、前記メモリは直接時間軸圧縮処理を行う。第２
のＴＶ信号を受信したときには、前記メモリは前記走査
線数変換用補間フィルタえの入力のためにデータを一括
保持する。この様に１つの前記メモリは、時間軸圧縮処
理を行うだけでなく、走査線数変換手段のメモリを兼用
する。(Structural Example 2) When the first TV signal is received, the memory directly performs the time axis compression process. Second
When receiving the TV signal, the memory collectively holds the data for input to the interpolation filter for converting the number of scanning lines. As described above, one of the memories not only performs the time axis compression process but also serves as the memory of the scanning line number converting means.
【００１６】[0016]
【実施例】本発明の実施例を図１及び２を用いて説明す
る。図１は、本発明を採用した９：１６の縦横比の画面
を持つ第２世代ＥＤＴＶ放送対応ＴＶ受信機の構成を示
す。図２は、図１のＴＶ受信機の各回路のタイミング図
である。図１において、レタ―ボックス形式と呼ばれる
縦横比が９：１６の第２世代ＥＤＴＶ信号もしくは縦横
比が３：４の現行ＴＶ信号が入力信号１６１として到来
する。まず、入力信号１６１は、時間軸圧縮補間フィル
タ１０１に入力される。時間軸圧縮用補間フィルタ１０
１は、現行ＴＶ信号若しくは第２世代ＥＤＴＶ信号の切
換え信号１６５（現行／ＥＤ）によって、動作もしくは
不動作に制御される。Embodiments of the present invention will be described with reference to FIGS. FIG. 1 shows the configuration of a second-generation EDTV broadcasting-compatible TV receiver having a 9:16 aspect ratio screen according to the present invention. FIG. 2 is a timing diagram of each circuit of the TV receiver of FIG. In FIG. 1, a second generation EDTV signal having an aspect ratio of 9:16 or a current TV signal having an aspect ratio of 3: 4, which is called a letter box format, arrives as an input signal 161. First, the input signal 161 is input to the time axis compression interpolation filter 101. Time axis compression interpolation filter 10
1 is controlled to operate or not to operate by the switching signal 165 (current / ED) of the current TV signal or the second generation EDTV signal.
【００１７】切換え信号１６５が現行ＴＶ信号到来を示
す時、時間軸圧縮用補間フィルタ１０１は、入力信号１
６１を、図７に示す原理に従って補間処理しＴＶ画面の
水平方向に時間軸圧縮する。この時間軸圧縮処理は、図
６で示したように、水平方向に４：３の比率で画面の映
像部分を圧縮する。図２で説明すると、入力信号２０１
（１６１に対応）は、ａ0 ，ａ1 ，ａ2 ，ａ3 ，ａ4 ，
…のデ―タ信号である。時間軸圧縮用補間フィルタ１０
１は、図７の原理に従い補間処理を行い、２０２であら
わされる出力デ―タａ0 ，ａ5 ，ａ6 ，Ｘ，ａ4 ，…
（１６２に対応）を次段のメモリ１０２に出力する。メ
モリ１０２は、メモリ制御回路１０４の制御信号を受け
て、２０２の出力デ―タａ0 ，ａ5 ，ａ6 ，Ｘ，ａ4 ，
…の内ダミ―デ―タＸを除いて出力する。現行ＴＶ信号
の入力の場合、次段の走査線数変換補間フィルタ１０３
は、切換え信号１６５を受けて補間処理を行なわないた
め走査線数変換用補間フィルタ１０３の出力は、２０５
に示すａ0 ，ａ5 ，ａ6 ，ａ4 ，…のデ―タ出力（１６
４に対応）となる。すなわち、水平方向にのみ時間軸圧
縮された出力信号となる。When the switching signal 165 indicates the arrival of the current TV signal, the time-base compression interpolation filter 101 operates the input signal 1
61 is subjected to interpolation processing according to the principle shown in FIG. As shown in FIG. 6, this time axis compression process compresses the video portion of the screen in the horizontal direction at a ratio of 4: 3. Referring to FIG. 2, the input signal 201
(Corresponding to 161) is a 0 , a 1 , a 2 , a 3 , a 4 ,
It is a data signal of ... Time axis compression interpolation filter 10
1 performs interpolation processing according to the principle of FIG. 7, and outputs output data a 0 , a 5 , a 6 , X, a 4 , ... Represented by 202.
(Corresponding to 162) is output to the memory 102 of the next stage. The memory 102 receives the control signal from the memory control circuit 104 and outputs the output data a 0 , a 5 , a 6 , X, a 4 ,
Out of the dummy data X, it is output. When the current TV signal is input, the scanning line number conversion interpolation filter 103 in the next stage
Does not perform the interpolation process in response to the switching signal 165, the output of the scanning line number conversion interpolation filter 103 is 205
The data output of a 0 , a 5 , a 6 , a 4 , ...
It corresponds to 4). That is, the output signal is time-axis compressed only in the horizontal direction.
【００１８】次に切換え信号１６５が第２世代ＥＤＴＶ
信号到来を示す時、時間軸圧縮用補間フィルタ１０１は
補間動作を行なわない。このため、第２世代ＥＤＴＶ信
号である入力信号１６１は、そのまま次段のメモリ１０
２に出力される。メモリ１０２は、メモリ制御回路１０
４の制御信号を受けて、入力信号１６１の複数ラインの
デ―タを一括保持し、これを走査線数変換用補間フィル
タ１０３のタップ入力１６３とする。切換え信号１６５
を受けて、走査線数変換用補間フィルタ１０３は、図９
に示す原理に従って、補間処理を行ない、信号１６４を
出力する。出力信号１６４は、第２世代ＥＤＴＶ信号の
有効走査線３６０本を４８０本に変換した信号である。
図２で説明すると、時間軸圧縮用補間フィルタ１０１が
補間動作を行なわないため、メモリ１０２の入力は、２
０１に示すａ0 ，ａ1 ，ａ2 ，ａ3 ，ａ4 ，…のデ―タ
信号となる。そして、メモリ１０２は、複数ラインのデ
―タを一括保持し、２０３に示すＬa ，Ｌb ，Ｌc ，Ｌ
d ，…のラインデ―タを次段の走査線数変換用補間フィ
ルタ１０３に出力する。切換え信号１６５を受けて、走
査線数変換用補間フィルタ１０３は、メモリ１０２の出
力ラインデ―タ２０３（１６３に対応）を、図９に示す
原理に従って補間処理を行ない、２０４に示すＬa ，Ｌ
b ′，Ｌc ′，Ｌn ′，Ｌd ，…の信号（１６４に対
応）を出力する。従来と同様、図示していない補助メモ
リにより、出力信号Ｌa ，Ｌb ′，Ｌc′，Ｌn ′，Ｌ
d ，…のタイミングを調整する。以上により、第２世代
ＥＤＴＶ信号の有効走査線３６０本を４８０本に変換し
た信号を得る。Next, the switching signal 165 is the second generation EDTV.
When the signal arrives, the time axis compression interpolation filter 101 does not perform the interpolation operation. Therefore, the input signal 161 which is the second generation EDTV signal is directly used in the memory 10 of the next stage.
2 is output. The memory 102 is the memory control circuit 10
In response to the control signal of No. 4, the data of a plurality of lines of the input signal 161 are collectively held, and this is used as the tap input 163 of the interpolation filter 103 for scanning line number conversion. Switching signal 165
In response to this, the interpolation filter 103 for scanning line number conversion is
Interpolation processing is performed according to the principle shown in (1) to output a signal 164. The output signal 164 is a signal obtained by converting 360 effective scanning lines of the second generation EDTV signal into 480 effective scanning lines.
Referring to FIG. 2, since the time axis compression interpolation filter 101 does not perform the interpolation operation, the input of the memory 102 is 2
Data signals a 0 , a 1 , a 2 , a 3 , a 4 , ... Then, the memory 102, data of a plurality of lines - collectively hold the data, L a indicated in 203, L b, L c, L
The line data of d , ... Is output to the interpolation filter 103 for scanning line number conversion in the next stage. Receiving a switching signal 165, the scanning line number conversion for interpolation filter 103, the output Rainde memory 102 - data 203 (corresponding to 163), performs interpolation processing according to the principle shown in FIG. 9, L a indicated in 204, L
b ', L c', L n ', L d, ... and outputs a signal (corresponding to 164) of the. As before, the auxiliary memory (not shown), the output signal L a, L b ', L c', L n ', L
Adjust the timing of d , .... As described above, a signal in which 360 effective scanning lines of the second generation EDTV signal are converted into 480 effective scanning lines is obtained.
【００１９】図３に、第２の実施例の第２世代ＥＤＴＶ
放送対応ＴＶ受信機の構成を示す。現行ＴＶ信号若しく
は第２世代ＥＤＴＶ信号３６１がメモリ３０１に入力さ
れる。Ａパルス３６４が、メモリ３０１の書き込み側端
子と選択回路３０３の一方の入力端子に入力される。Ｂ
パルス３６５が、選択回路３０３の他方の入力端子に入
力される。Ａパルス３６４とＢパルス３６５のパルス幅
の比率は４：３である。選択回路３０３の制御端子に
は、現行ＴＶ信号若しくは第２世代ＥＤＴＶ信号の切換
え信号３６３が入力される。切換え信号３６３は、走査
線数変換用補間フィルタ３０２にも加えられる。選択回
路３０３の出力３６６は、メモリ３０１の読み出し側端
子，メモリ制御回路３０４，走査線数変換用補間フィル
タ３０２に入力される。FIG. 3 shows the second-generation EDTV of the second embodiment.
The structure of a TV receiver for broadcasting is shown. The current TV signal or the second generation EDTV signal 361 is input to the memory 301. The A pulse 364 is input to the writing side terminal of the memory 301 and one input terminal of the selection circuit 303. B
The pulse 365 is input to the other input terminal of the selection circuit 303. The ratio of the pulse widths of the A pulse 364 and the B pulse 365 is 4: 3. The switching signal 363 of the current TV signal or the second generation EDTV signal is input to the control terminal of the selection circuit 303. The switching signal 363 is also applied to the interpolation filter 302 for scanning line number conversion. The output 366 of the selection circuit 303 is input to the read side terminal of the memory 301, the memory control circuit 304, and the scanning line number conversion interpolation filter 302.
【００２０】現行ＴＶ信号の切換え信号３６３到来のと
き、選択回路３０３は、Ａ及びＢパルス３６４，３６５
の内Ｂパルス３６６を出力する。これによりメモリ３０
１は、入力信号３６１をＡパルスにより書き込み、Ｂパ
ルス３６６により読み出す。これにより、入力の現行Ｔ
Ｖ信号３６１は、水平方向に４：３の比率で時間軸圧縮
処理された信号３６２を、次段の走査線数変換用補間フ
ィルタ３０２に出力する。このとき、メモリ制御回路３
０４は、メモリ３０１上画像の位置を制御する。また走
査線数変換用補間フィルタ３０２は、信号３６６に同期
して動作するが、切換え信号３６３により走査線数変換
処理は行なわない。When the switching signal 363 of the current TV signal arrives, the selection circuit 303 causes the A and B pulses 364 and 365 to be transmitted.
B pulse 366 is output. This allows the memory 30
1 writes the input signal 361 by the A pulse and reads it by the B pulse 366. This makes the current T of the input
As the V signal 361, a signal 362 which is time-axis compressed at a ratio of 4: 3 in the horizontal direction is output to the scanning line number conversion interpolation filter 302 in the next stage. At this time, the memory control circuit 3
04 controls the position of the image on the memory 301. The scanning line number conversion interpolation filter 302 operates in synchronization with the signal 366, but the scanning line number conversion process is not performed by the switching signal 363.
【００２１】第２世代ＥＤＴＶ信号の切換え信号３６３
到来のとき、選択回路３０３は、Ａ及びＢパルス３６
４，３６５の内Ａパルス３６６を出力する。これによ
り、メモリ３０１は、入力信号３６１をＡパルス３６４
により書き込み、Ａパルス３６６により読み出しを行な
う。これにより、メモリ３０１は時間軸圧縮処理を行な
わない。このとき、メモリ３０１は、メモリ制御回路３
０４の制御信号を受けて複数のラインデ―タ入力３６１
を一括保持し、このデ―タを次段の走査線数変換用補間
フィルタ３０２のタップ入力３６２として出力する。走
査線数変換用補間フィルタ３０２は、信号３６６に同期
して動作する。これと同時に、走査線数変換補間フィル
タ３０２は、切換え信号３６３を受けて、図９に示す原
理に従って補間処理を行なう。この補間処理後信号３６
７を出力する。以上、第２の実施例では、時間軸圧縮用
補間フィルタを用いず、メモリ３６４において書き込み
パルスと読み出しパルスの幅の比率で、時間軸圧縮処理
を行なう。Second generation EDTV signal switching signal 363
Upon arrival, the selection circuit 303 causes the A and B pulses 36
The A pulse 366 of 4,365 is output. As a result, the memory 301 outputs the input signal 361 to the A pulse 364.
And the A pulse 366 reads. As a result, the memory 301 does not perform the time axis compression process. At this time, the memory 301 has the memory control circuit 3
A plurality of line data inputs 361 in response to the 04 control signal
Are collectively held, and this data is output as the tap input 362 of the interpolation filter 302 for scanning line number conversion in the next stage. The scanning line number conversion interpolation filter 302 operates in synchronization with the signal 366. At the same time, the scanning line number conversion interpolation filter 302 receives the switching signal 363 and performs interpolation processing according to the principle shown in FIG. This interpolated signal 36
7 is output. As described above, in the second embodiment, the time axis compression process is performed in the memory 364 at the ratio of the widths of the write pulse and the read pulse without using the time axis compression interpolation filter.
【００２２】図４に、第３の実施例の第２世代ＥＤＴＶ
放送対応ＴＶ受信機の構成を示す。現行ＴＶ信号若しく
は第２世代ＥＤＴＶ信号４６１が第１のメモリ４０１に
入力される。この第１のメモリ４０１は、複数のライン
デ―タ入力４６１を一括保持し、次段の走査線数変換用
補間フィルタ４０２のタップ入力４６２として出力す
る。走査線数変換用補間フィルタ４０２には、Ａパルス
４６５並びに現行ＴＶ信号若しくは第２世代ＥＤＴＶ信
号の切換え信号４６４が入力される。第２のメモリ４０
３は、走査線数変換補間フィルタ４０２の出力４６３を
入力する。また第２のメモリ４０３の書き込み側端子に
Ａパルス４６５が入力される。Ａパルス４６５は、また
選択回路４０４の一方の入力端子に加えられる。Ｂパル
ス４６６は、選択回路４０４の他方の入力端子に加えら
れる。Ａパルス４６５とＢパルス４６６のパルス幅の比
率は、４：３である。選択回路４０４の制御端子には、
切換え信号４６４が入力される。現行ＴＶ信号の切換え
信号４６４のとき、選択回路４０４は、Ａ及びＢパルス
４６５，４６６の内、Ｂパルス４６７を出力する。第２
世代ＥＤＴＶ信号の切換え信号４６４のとき、選択回路
４０４は、Ａ及びＢパルス４６５，４６６の内、Ａパル
ス４６７を出力する。選択回路４０４の出力４６７は、
第２のメモリ４０３の読み出し側端子とメモリ制御回路
４０５に入力される。FIG. 4 shows the second-generation EDTV of the third embodiment.
The structure of a TV receiver for broadcasting is shown. The current TV signal or the second generation EDTV signal 461 is input to the first memory 401. The first memory 401 holds a plurality of line data inputs 461 all together and outputs it as a tap input 462 of the interpolation filter 402 for scanning line number conversion in the next stage. The A pulse 465 and the switching signal 464 of the current TV signal or the second generation EDTV signal are input to the interpolation filter 402 for scanning line number conversion. Second memory 40
3 inputs the output 463 of the scanning line number conversion interpolation filter 402. Further, the A pulse 465 is input to the writing side terminal of the second memory 403. The A pulse 465 is also applied to one input terminal of the selection circuit 404. The B pulse 466 is applied to the other input terminal of the selection circuit 404. The ratio of the pulse widths of the A pulse 465 and the B pulse 466 is 4: 3. The control terminal of the selection circuit 404 is
The switching signal 464 is input. When the switching signal 464 of the current TV signal, the selection circuit 404 outputs the B pulse 467 of the A and B pulses 465 and 466. Second
When the generation EDTV signal switching signal 464, the selection circuit 404 outputs the A pulse 467 out of the A and B pulses 465 and 466. The output 467 of the selection circuit 404 is
It is input to the read side terminal of the second memory 403 and the memory control circuit 405.
【００２３】現行ＴＶ信号の切換え信号４６４到来の
き、走査線数変換用補間フィルタ４０２は、Ａパルス４
６５に同期して動作するが、走査線数変換処理は行なわ
ない。そして、選択回路４０４は、Ａ及びＢパルス４６
５，４６６の内、Ｂパルス４６７を出力する。これによ
り、第２のメモリ４０３は、入力信号４６３をＡパルス
４６５により書き込み、Ｂパルス４６７より読み出す。
これにより、入力の現行ＴＶ信号４６１は、水平方向に
４：３の比率で時間軸圧縮処理された信号４６８を出力
する。このとき、メモリ制御回路４０５は、第２のメモ
リ４０３上画像の位置を制御する。When the switching signal 464 of the current TV signal arrives, the scanning line number conversion interpolation filter 402 uses the A pulse 4
It operates in synchronism with 65, but the scanning line number conversion processing is not performed. Then, the selection circuit 404 outputs the A and B pulses 46.
Out of 5,466, B pulse 467 is output. As a result, the second memory 403 writes the input signal 463 with the A pulse 465 and reads it with the B pulse 467.
As a result, the input current TV signal 461 outputs a signal 468 that has been subjected to time-axis compression processing at a ratio of 4: 3 in the horizontal direction. At this time, the memory control circuit 405 controls the position of the image on the second memory 403.
【００２４】第２世代ＥＤＴＶ信号の切換え信号４６４
到来のとき、走査線数変換用補間フィルタ４０２は、Ａ
パルス４６５に同期して動作するとともに、図９に示す
原理に従った補間処理を行なう。この補間処理後の出力
４６３を第２のメモリ４０３に入力する。第２のメモリ
は、入力信号４６３をＡパルス４６５で書き込み、Ａパ
ルス４６７で読み出すため、時間軸圧縮処理は行なわれ
ない。このときメモリ制御回路４０５は、第２のメモリ
４０３内で走査タイミングを制御する。以上、第３の実
施例では、第２の実施例と同様に、時間軸圧縮用補間フ
ィルタを用いず、第２のメモリ４０３において書き込み
パルスと読み出しパルスの幅の比率で、時間軸圧縮処理
を行なう。Second generation EDTV signal switching signal 464
Upon arrival, the scanning line number conversion interpolation filter 402
It operates in synchronism with the pulse 465 and performs interpolation processing according to the principle shown in FIG. The output 463 after this interpolation processing is input to the second memory 403. Since the second memory writes the input signal 463 with the A pulse 465 and reads it with the A pulse 467, the time axis compression process is not performed. At this time, the memory control circuit 405 controls the scan timing in the second memory 403. As described above, in the third embodiment, similar to the second embodiment, the time-axis compression process is performed in the second memory 403 without using the time-axis compression interpolation filter by the ratio of the widths of the write pulse and the read pulse. To do.
【００２５】以上、入力信号としては、現行ＴＶ信号と
第２世代ＥＤＴＶ信号となっているが、時間軸圧縮の比
率並びに走査線数変換の本数を変えることによって、い
ろいろなＴＶ信号の受信が可能となる。As described above, the current TV signal and the second generation EDTV signal are used as the input signals, but various TV signals can be received by changing the time axis compression ratio and the number of scanning line number conversions. Becomes
【００２６】[0026]
【発明の効果】本発明のＴＶ受信機によれば、時間軸圧
縮手段のメモリと走査線数変換手段のメモリを、１つの
メモリで兼用するため回路構成が簡略化される。また、
そのメモリは常時使用するので経済的である。According to the TV receiver of the present invention, since the memory of the time base compression means and the memory of the scanning line number conversion means are combined into one memory, the circuit configuration is simplified. Also,
The memory is economical because it is always used.
【図１】本発明の第１の実施例のＴＶ受信機の構成を示
すブロック図である。FIG. 1 is a block diagram showing a configuration of a TV receiver according to a first embodiment of the present invention.
【図２】本発明のＴＶ受信機の動作を示すデ―タタイミ
ング図である。FIG. 2 is a data timing diagram showing the operation of the TV receiver of the present invention.
【図３】本発明の第２の実施例のＴＶ受信機の構成を示
すブロック図である。FIG. 3 is a block diagram showing a configuration of a TV receiver according to a second embodiment of the present invention.
【図４】本発明の第３の実施例のＴＶ受信機の構成を示
すブロック図である。FIG. 4 is a block diagram showing a configuration of a TV receiver according to a third embodiment of the present invention.
【図５】従来のＴＶ受信機の構成を示すブロック図であ
る。FIG. 5 is a block diagram showing a configuration of a conventional TV receiver.
【図６】時間軸圧縮変換（４→３変換）の原理を示す図
である。FIG. 6 is a diagram showing the principle of time-base compression conversion (4 → 3 conversion).
【図７】時間軸圧縮変換（４→３変換）の原理を示す図
である。FIG. 7 is a diagram showing the principle of time-base compression conversion (4 → 3 conversion).
【図８】走査線数変換（３→４変換）の原理を示す図で
ある。FIG. 8 is a diagram showing the principle of scanning line number conversion (3 → 4 conversion).
【図９】走査線数変換（３→４変換）の原理を示す図で
ある。FIG. 9 is a diagram showing the principle of scanning line number conversion (3 → 4 conversion).
１０１…時間軸圧縮用補間フィルタ、１０２…メモリ、
１０３…走査線数変換用補間フィルタ、１０４…メモリ
制御回路、３０１…メモリ、３０２…走査線数変換用補
間フィルタ、３０３…選択回路、３０４…メモリ制御回
路、４０１…第１のメモリ、４０２…走査線数変換用補
間フィルタ、４０３…第２のメモリ、４０４…選択回
路、４０５…メモリ制御回路101 ... Interpolation filter for time axis compression, 102 ... Memory,
103 ... Interpolation filter for scanning line number conversion, 104 ... Memory control circuit, 301 ... Memory, 302 ... Interpolation filter for scanning line number conversion, 303 ... Selection circuit, 304 ... Memory control circuit, 401 ... First memory, 402 ... Interpolation filter for scanning line number conversion, 403 ... Second memory, 404 ... Selection circuit, 405 ... Memory control circuit
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石井 聡之 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝映像メディア技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Ishii 8 Shinsugita-cho, Isogo-ku, Yokohama, Kanagawa Prefecture
Claims (2)
ビジョン信号と、第２の縦横比で送られてくる第２のテ
レビジョン信号とを受信する前記第２の縦横比の画面を
持つテレビジョン受信機において、 前記第１のテレビジョン信号または第２のテレビジョン
信号が入力され、前記第１のテレビジョン信号を受信し
たときには前記画面の水平方向に対して時間軸を圧縮
し、前記第２のテレビジョン信号を受信したときにはそ
のまま出力する時間軸圧縮用補間フィルタと、 前記時間軸圧縮用補間フィルタの出力が入力され、前記
第２のテレビジョン信号を受信したときには前記画面の
垂直方向に対して走査線数を変換し、前記第１のテレビ
ジョン信号を受信したときにはそのまま出力する走査線
数変換用補間フィルタとを具備し、 前記第１のテレビジョン信号を受信したときには前記時
間軸圧縮用補間フィルタの出力からダミーデータを除
き、前記第２のテレビジョン信号を受信したときには前
記走査線数変換用補間フィルタえの入力のためにデータ
を一括保持するメモリを、前記時間軸圧縮用補間フィル
タと前記走査線変換用補間フィルタの間に接続したこと
を特徴とするテレビジョン受信機。1. A second aspect ratio for receiving a first television signal sent at a first aspect ratio and a second television signal sent at a second aspect ratio. In a television receiver having a screen, when the first television signal or the second television signal is input and the first television signal is received, the time axis is compressed in the horizontal direction of the screen. However, when the second television signal is received, the time axis compression interpolation filter that outputs it as it is and the output of the time axis compression interpolation filter are input, and when the second television signal is received, the screen is displayed. And a scanning line number converting interpolation filter for converting the number of scanning lines in the vertical direction and outputting the same when receiving the first television signal. When a revision signal is received, dummy data is removed from the output of the interpolation filter for time axis compression, and when the second television signal is received, the data is collectively held for input to the interpolation filter for scanning line number conversion. And a memory for connecting the time axis compression interpolation filter and the scanning line conversion interpolation filter.
ビジョン信号と、第２の縦横比で送られてくる第２のテ
レビジョン信号とを受信する前記第２の縦横比の画面を
持つテレビジョン受信機において、 第１のパルスを発生する第１のパルス発生回路と、 第２のパルスを発生する第２のパルス発生回路と、 第１のテレビジョン信号または第２のテレビジョン信号
が入力されると共に書き込みクロックとして前記第１の
パルスが入力されるメモリと、 前記メモリの出力が入力され、前記第２のテレビジョン
信号を受信したときには前記画面の垂直方向に走査線数
を変換し、前記第１のテレビジョン信号を受信したとき
にはそのまま出力する走査線数変換用補間フィルタと、 前記第１のテレビジョン信号または第２のテレビジョン
信号の到来によって、前記第１のパルスまたは前記第２
のパルスを選択して前記メモリの読み出し側端子に出力
する選択回路とを有し、 前記選択回路は、前記第１のテレビジョン信号が到来し
たときは前記第２のパルスを出力し、前記第２のテレビ
ジョン信号が到来したときは前記第１のパルスを出力
し、 前記第２のパルスと前記第１のパルスの幅の比率は、前
記画面の水平方向に対する時間軸圧縮の比率であること
を特徴とするテレビジョン受信機。2. A second aspect ratio for receiving a first television signal sent at a first aspect ratio and a second television signal sent at a second aspect ratio. In a television receiver having a screen, a first pulse generating circuit for generating a first pulse, a second pulse generating circuit for generating a second pulse, a first television signal or a second television A memory to which the first signal is inputted as a write clock while a television signal is inputted, and an output of the memory is inputted, and when the second television signal is received, the number of scanning lines in the vertical direction of the screen When the first television signal or the second television signal is received. What the first pulse or the second
A selection circuit for selecting the pulse of and outputting the selected pulse to the read side terminal of the memory, wherein the selection circuit outputs the second pulse when the first television signal arrives and outputs the second pulse. When the second television signal arrives, the first pulse is output, and the ratio of the widths of the second pulse and the first pulse is a ratio of time-axis compression with respect to the horizontal direction of the screen. A television receiver characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5096398A JPH06311453A (en) | 1993-04-23 | 1993-04-23 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5096398A JPH06311453A (en) | 1993-04-23 | 1993-04-23 | Television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06311453A true JPH06311453A (en) | 1994-11-04 |
Family
ID=14163862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5096398A Pending JPH06311453A (en) | 1993-04-23 | 1993-04-23 | Television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06311453A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19941876A1 (en) * | 1999-09-02 | 2001-04-12 | Linde Ag | Industrial truck with hydrodynamic power unit fitted with control system to execute changes of direction |
-
1993
- 1993-04-23 JP JP5096398A patent/JPH06311453A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19941876A1 (en) * | 1999-09-02 | 2001-04-12 | Linde Ag | Industrial truck with hydrodynamic power unit fitted with control system to execute changes of direction |
| DE19941876C2 (en) * | 1999-09-02 | 2002-06-06 | Linde Ag | Work vehicle with a hydrodynamic drive |
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