JPH046978A - Video recording method for muse signal - Google Patents

Video recording method for muse signal

Info

Publication number
JPH046978A
JPH046978A JP2108417A JP10841790A JPH046978A JP H046978 A JPH046978 A JP H046978A JP 2108417 A JP2108417 A JP 2108417A JP 10841790 A JP10841790 A JP 10841790A JP H046978 A JPH046978 A JP H046978A
Authority
JP
Japan
Prior art keywords
field
signal
video signal
control signal
muse
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
Application number
JP2108417A
Other languages
Japanese (ja)
Inventor
Shoichi Nishino
正一 西野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2108417A priority Critical patent/JPH046978A/en
Publication of JPH046978A publication Critical patent/JPH046978A/en
Pending legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)
  • Television Systems (AREA)

Abstract

PURPOSE:To reproduce a picture at reverse reproduction with high quality controlled by a normal sample phase similarly in the case of normal reproduction by recording a control signal at a preceding field before and after a video signal of a current field. CONSTITUTION:An (n-1)th in-field control signal 21 in existence in a preceding field is recorded just before a video signal 3 of an n th field (Fi) and an (n-1)th in-field control signal 22 is recorded just after the video signal 3. The signals 21, 22 includes a sample phase with respect to the signal 3 and the signals 21, 22 with respect to the signal 3 in the n-th in-field are always in existing in a preceding field timewise both at normal reproduction and reverse reproduction. Thus, a high definition television signal with normal pattern structure is decoded even at reverse reproduction. Moreover, a delay circuit of a video signal is not required and the control signal is required to be delayed by 1 field at recording but a data quantity is very small in comparison with that of the video signal and not a problem.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はMUSE信号の録画方法およびその装置に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a MUSE signal recording method and apparatus.

従来の技術 MUSE信号は、衛星放送によって一般家庭に供給され
る予定の高品位テレビジョン信号のひとつである。高品
位テレビジョン信号は従来のテレビジョン信号(例えば
NTSC信号)に比べて非常に解像度の高いテレビジョ
ン信号であるが、帯域も従来のテレビジョン信号の5倍
以上持っている。そのため、衛星放送で伝送可能な帯域
幅に高品位信号の帯域を収めるために、原、高品位テレ
ビジョン信号をサブナイキストサンプリング手法によっ
て帯域圧縮したのがMUSE信号である。
BACKGROUND OF THE INVENTION The MUSE signal is one of the high-definition television signals that will be supplied to ordinary households by satellite broadcasting. A high-definition television signal is a television signal with much higher resolution than a conventional television signal (for example, an NTSC signal), but it also has a band five times more than that of a conventional television signal. Therefore, in order to fit the band of the high-definition signal into the bandwidth that can be transmitted by satellite broadcasting, the MUSE signal is obtained by band-compressing the original high-definition television signal using a sub-Nyquist sampling method.

現在、前記MUSE信号を受信・表示するために、チュ
ーナ、デコーダ、デイスプレィ等の映像機器の開発がな
されている。また、MUSE信号を録画・再生するため
のVTRやビデオディスクなどの開発も盛んである。
Currently, video equipment such as tuners, decoders, and displays are being developed to receive and display the MUSE signal. Furthermore, development of VTRs and video discs for recording and playing back MUSE signals is also active.

MUSE信号は前述のようにサブナイキストサンプリン
グ手法により帯域圧縮されていて、MUSE信号自体の
帯域は原高品位テレビジョン信号に比べ狭くなっている
が、映像信号の動かない時、つまり静止画モードでは、
複数フィールドの信号を組み合わせて1画面を構成し、
原高品位テレビジョン信号の持つ高解像度を表現してい
る。
As mentioned above, the band of the MUSE signal is compressed using the sub-Nyquist sampling method, and the band of the MUSE signal itself is narrower than that of the original high-definition television signal, but when the video signal does not move, that is, in still image mode, ,
A single screen is constructed by combining signals from multiple fields.
It expresses the high resolution of original high definition television signals.

ここで、MUSE信号のコントロール信号は、原高品位
テレビジョン信号をサブナイキストサンプリングする時
の各フィールドにおけるサブサンプル位相の情報が含ま
れており、MUSE信号から原高品位テレビジョン信号
を復元する(デコードする)のに必要な制御信号である
が、実際にデコードする処理手順上、処理するフィール
ドの映像信号に対するコントロール信号は、その直前の
フィールド内に配置されている。
Here, the control signal of the MUSE signal includes information on the sub-sampling phase in each field when performing sub-Nyquist sampling of the original high-definition television signal, and restores the original high-definition television signal from the MUSE signal ( However, in the actual decoding process, the control signal for the video signal of the field to be processed is placed in the field immediately preceding it.

MUSE信号の録画には、MUSE信号の映像信号部と
コントロール信号部と音声信号部(付加情報を含む)を
記録すればよく、そのままFM変調して記録する方式や
、また各信号部を分離して記録する方式なども考えられ
る。
To record a MUSE signal, it is sufficient to record the video signal part, control signal part, and audio signal part (including additional information) of the MUSE signal.You can record the MUSE signal by FM modulating it as is, or by separating each signal part. Another possible method is to record the information using

発明が解決しようとする課題 しかしながら、従来のVTR等の構成では、VTR等の
特殊再生機能のひとつである逆再生を行なうとき、前記
各フィールドにおける映像信号とそのフィールドのサブ
サンプル位相を含むコントロール信号との並びがくずれ
るので、静止画モードだけでなく、動画モードにおいて
も正常な画面構成を行えないという課題を有していた。
Problems to be Solved by the Invention However, in the configuration of a conventional VTR, etc., when performing reverse playback, which is one of the special playback functions of a VTR, etc., a control signal containing a video signal in each field and a subsample phase of that field is used. Since the alignment of the images is disrupted, there is a problem in that normal screen configuration cannot be performed not only in still image mode but also in video mode.

また、逆再生のための映像信号とコントロール信号との
並びを調整して各フィールドのサブサンプル位相を制御
しようとすれば、再生された映像信号と同フィールド内
に構成するコントロール信号は、2フイールド後に記録
されているコントロール信号である。そのため、映像信
号は少なくとも1フイ一ルド以上の間遅延させることに
なり、映像信号の遅延回路が余分に必要となる課題を有
していた。
Furthermore, if you try to control the subsample phase of each field by adjusting the arrangement of the video signal and control signal for reverse playback, the reproduced video signal and the control signal configured in the same field will be divided into two fields. This is the control signal recorded later. Therefore, the video signal has to be delayed for at least one field or more, resulting in the problem that an extra video signal delay circuit is required.

本発明ではかかる点に鑑み、MUSE信号を録画するに
あたり、逆再生においても通常再生と同様に正常なサブ
サンプル位相によって制御された高品質の画像を再生で
きるMUSE信号の録画方法を提供することを目的とす
る。
In view of this point, the present invention provides a MUSE signal recording method that can reproduce high-quality images controlled by normal sub-sampling phases even in reverse playback as in normal playback. purpose.

課題を解決するための手段 MUSE信号の録画するのに、前フィールドにあるコン
トロール信号を、少なくとも現フィールドの映像信号よ
り前と現フィールドの映像信号より後ろには記録するこ
とを特徴とするMUSE信号の録画方法である。
Means for Solving the Problems A MUSE signal is characterized in that when recording a MUSE signal, a control signal in the previous field is recorded at least before the video signal of the current field and after the video signal of the current field. This is the recording method.

作用 本発明は前記した構成により、MUSE信号を録画する
にあたり、逆再生においても通常再生と同様に高品質の
画像を再生できるMUSE信号の録画方法である。
Effects The present invention is a MUSE signal recording method that allows high-quality images to be played back in reverse playback as well as in normal playback when recording a MUSE signal with the above-described configuration.

実施例 第1図は、本発明の第1の実施例におけるMUSE信号
の録画方法を説明するための録画データを時刻的な順序
を示す図であって、同図の左方から右方の順序で録画す
るものである。
Embodiment FIG. 1 is a diagram showing the temporal order of recorded data for explaining the MUSE signal recording method in the first embodiment of the present invention, and the order is from left to right in the figure. It is to be recorded.

第1図の2は、MUSE信号の第n−1フイールド(n
は整数)の映像信号(ただし音声信号、付加情報なども
含む)とする。同じく、3は第nフィールドの映像信号
、4は第n+1フィールドの映像信号である。また、2
1および22はMUSE信号の第n−1フイールド内に
ある第n−1フイ一ルド内コントロール信号であり、1
2は第n−2フイールド内にある第n−2フイ一ルド内
コントロール信号、31は第nフィールド内にある第n
フィールド内コントロール信号である。
2 in FIG. 1 is the n-1st field (n
is an integer) video signal (including audio signals, additional information, etc.). Similarly, 3 is the video signal of the nth field, and 4 is the video signal of the (n+1)th field. Also, 2
1 and 22 are control signals within the n-1 field within the n-1 field of the MUSE signal;
2 is the n-2nd field control signal in the n-2nd field, and 31 is the n-th field control signal in the n-th field.
This is an in-field control signal.

以上のように、本実施例は、第nフィールドの映像信号
3の直前に、前フイールド内にある第n−1フイ一ルド
内コントロール信号21を記録し、かつ、直後に第n−
1フイ一ルド内コントロール信号22を記録するもので
ある。
As described above, in this embodiment, the n-1 field control signal 21 in the previous field is recorded immediately before the n-th field video signal 3, and immediately after the n-th field control signal 21 is recorded.
The control signal 22 within one field is recorded.

本実施例においては、第nフィールドの映像信号3に対
するサブサンプル位相を含んだコントロール信号は、同
図の第n−1フイ一ルド内コントロール信号21および
22であって、第nフィールドの映像信号3の前後に配
置して記録している。
In this embodiment, the control signals containing the sub-sampled phase for the n-th field video signal 3 are the n-1 field control signals 21 and 22 shown in the figure, and are the n-th field video signal 3. It is recorded by placing it before and after 3.

以上のようにしてMUSE信号を録画したときの再生時
の動作を説明する。
The operation during playback when the MUSE signal is recorded as described above will be explained.

通常再生時は、第nフィールドの映像信号3に対するコ
ントロール信号は、直前の第n−1フイ一ルド内コント
ロール信号21で記録されているので第n−1フイール
ドの映像信号2とともに第n−1フイールド内に配置し
て再生できる。よって、録画時入力のMUSE信号をそ
のまま構成せることができる。
During normal playback, the control signal for the video signal 3 of the nth field is recorded as the control signal 21 in the immediately preceding n-1st field, so it is used together with the video signal 2 of the n-1st field. It can be placed in the field and played. Therefore, the MUSE signal input during recording can be configured as is.

つぎに逆再生時について説明する。第nフィールドの映
像信号3に対するコントロール信号は、第n−1フイ一
ルド内コントロール信号22で録画時の時刻的に直後に
も記録されている。この第n−1フイ一ルド内コントロ
ール信号22は、逆再生時には録画時とは逆に、第nフ
ィールドの映像信号3の直前に再生できることになる。
Next, the case of reverse playback will be explained. The control signal for the video signal 3 of the n-th field is recorded as the n-1 field control signal 22 immediately after the recording time. This n-1 field control signal 22 can be reproduced immediately before the n-th field video signal 3 during reverse playback, contrary to the recording time.

つまり、第nフィールドの映像信号3より前に再生され
る第n+1フィールドの映像信号4とともに第nフィー
ルドの映像信号3の直前のフィールド内に配置して再生
することができる。
That is, it can be placed and reproduced in the field immediately before the n-th field video signal 3 together with the (n+1)-th field video signal 4 that is reproduced before the n-th field video signal 3.

以上説明したように、本実施例によれば、通常再生時、
逆再生時ともに、第nフィールドの映像信号3に対する
サブサンプル位相を含むコントロール信号(第n−1フ
イールド内にあったコントロール信号)が、常に時刻的
に前フイールド内に存在するようにできるので、逆再生
時においても常に正常な画面構成がなされた高品位テレ
ビジョン信号を復元できる。
As explained above, according to this embodiment, during normal playback,
Both during reverse playback, the control signal containing the subsample phase for the video signal 3 of the nth field (the control signal that was in the n-1st field) can always exist in the previous field in terms of time. To always restore a high-definition television signal with a normal screen configuration even during reverse playback.

さらに、逆再生時、サブサンプル位相を合わすために映
像信号と同一フィールド内に構成しなければならないコ
ントロール信号が、その映像信号の直後に記録されてい
るので映像信号の遅延回路が必要でなく回路規模の点で
有効である。しかし記録時にはコントロール信号を1フ
イ一ルド分はど遅延しなければならないが、コントロー
ル信号自体のデータ量は1フイールド内で、正味32ビ
ツト、MUSE信号状態でも470ハイドしがなく、2
4万バイト以上ある1フイ一ルド内映像信号に比べて非
常に小量であり問題とならない。
Furthermore, during reverse playback, the control signal that must be configured in the same field as the video signal in order to match the subsample phase is recorded immediately after the video signal, so there is no need for a delay circuit for the video signal. Effective in terms of scale. However, when recording, the control signal must be delayed by one field, but the data amount of the control signal itself is 32 bits net within one field, and even in the MUSE signal state there is no 470 bits, and 2
This amount is very small compared to the video signal in one field, which is more than 40,000 bytes, and does not pose a problem.

発明の詳細 な説明したように、本発明によれば、通常再生時、逆再
生時ともに、各フィールドの映像信号に対するサブサン
プル位相を含むコントロール信号が、常に時刻的に前フ
イールド内に存在するようにできるので、逆再生時にお
いても常に正常な画面構成がなされた高品位テレビジョ
ン信号を復元できる。
As described in detail, according to the present invention, the control signal including the subsample phase for the video signal of each field always exists within the previous field in terms of time during both normal playback and reverse playback. Therefore, even during reverse playback, a high-definition television signal with a normal screen configuration can always be restored.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例におけるMUSE信号の録画
方式の説明図である。 2・・・・・・第n−1フイールドの映像信号、3・・
・・・・第nフィールドの映像信号、4・・・・・・第
n+1フィールドの映像信号、12・・・・・・第n−
2フイ一ルド内コントロール信号、21.22・・・・
・・第n −1フイ一ルド内コントロール信号、31・
・・・・・第nフィールド内コントロール信号。
FIG. 1 is an explanatory diagram of a MUSE signal recording method in an embodiment of the present invention. 2... Video signal of the n-1th field, 3...
...Video signal of the nth field, 4...Video signal of the n+1th field, 12...Video signal of the n-th field
Control signal in 2 fields, 21, 22...
... Control signal in the n-1 field, 31.
...Control signal within the nth field.

Claims (1)

【特許請求の範囲】[Claims] MUSE信号を録画するのに、前フィールドにあるコン
トロール信号を、少なくとも現フィールドの映像信号よ
り前と現フィールドの映像信号より後ろに記録すること
を特徴とするMUSE信号の録画方法。
A method for recording a MUSE signal, characterized in that a control signal in a previous field is recorded at least before a video signal of the current field and after the video signal of the current field.
JP2108417A 1990-04-24 1990-04-24 Video recording method for muse signal Pending JPH046978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2108417A JPH046978A (en) 1990-04-24 1990-04-24 Video recording method for muse signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2108417A JPH046978A (en) 1990-04-24 1990-04-24 Video recording method for muse signal

Publications (1)

Publication Number Publication Date
JPH046978A true JPH046978A (en) 1992-01-10

Family

ID=14484236

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2108417A Pending JPH046978A (en) 1990-04-24 1990-04-24 Video recording method for muse signal

Country Status (1)

Country Link
JP (1) JPH046978A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5543466A (en) * 1995-01-19 1996-08-06 Empire Plastics, Inc. Extended flex life core and overlay compositions and laminates thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5543466A (en) * 1995-01-19 1996-08-06 Empire Plastics, Inc. Extended flex life core and overlay compositions and laminates thereof

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