JPS5877083A - Reading method of time code signal - Google Patents
Reading method of time code signalInfo
- Publication number
- JPS5877083A JPS5877083A JP56175270A JP17527081A JPS5877083A JP S5877083 A JPS5877083 A JP S5877083A JP 56175270 A JP56175270 A JP 56175270A JP 17527081 A JP17527081 A JP 17527081A JP S5877083 A JPS5877083 A JP S5877083A
- Authority
- JP
- Japan
- Prior art keywords
- time code
- signal
- code signal
- correlation
- time
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
- G11B27/323—Time code signal, e.g. on a cue track as SMPTE- or EBU-time code
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は例えば自動ｉｌｌ集装置に使用されるビデオデ
ープＫ１ｍ録された８ＭＰＴｌタイムコード偵号等を琥
与出丁のに使用し工好遇なメイふコード佃号絖み填り方
法に関し、特に常に正し一タイムーード（１号を出力す
ることができる徐にしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes, for example, an 8MPTl time code code recorded on a video tape K1m used in an automatic illumination device to produce a convenient May code code. Regarding the filling method, it is particularly slow so that it can always output the correct one time mood (No. 1).
一般に自動−果談＊ｋｌ１ｇするへリカルス呼ヤン証ｖ
Ｔルに使用されるｆｒ−７に′ｌ１ｒＩ／ｍてはこのテ
ープの番地を指定するのに使用するためこのテープの長
手方向にフレー五周期でビデオトラックのタイムコード
信号が１録されている。第１図はこのようなタイムコー
ド信号の一例である８ＭＰＴＥタイ轟；−ド信号を示し
ている。第１図に示すように１フレームは８０ビツト（
１ビツト寓１／（８０Ｘ３０）Ｓ＠Ｃ）で構成され、そ
のうちの６４ビツトがタイムコード及びエーザーピット
として使用され、残りの１６ビツトが同期ワードである
。タイムコード部分には時間（ＸＩ（ｌび４１）、分（
Ｘ １Ｇ及びＡ１）。In general, the automatic result *kl1g helical call yang proof v
In the fr-7 used for the T file, the time code signal of the video track is recorded once every five frames in the longitudinal direction of this tape in order to be used to specify the address of this tape. . FIG. 1 shows an 8MPTE tie signal which is an example of such a time code signal. As shown in Figure 1, one frame consists of 80 bits (
It consists of 1 bit (1/(80x30)S@C), of which 64 bits are used as time code and aether pit, and the remaining 16 bits are a synchronization word. The time code part shows hours (XI (lbi 41), minutes (
X 1G and A1).
秒（ＸＩ（ｌびＡ１）、７Ｖ−Ａ（Ｘ１０＆びＡ１）の
各データが書自込筐れる。これらのデータの間はニーず
一ビツトとして用−られる、１６ビツトの同期ワードを
工１２ビット（オール＠ｌ”）の同期信号と、その１１
畿に付加された各２ピツ酬の＠ｏｏ”及び＠０１″の方
向！ｆ４Ｊ別値号から成っている。方向刊別偏号はテー
プか執刀肉Ｆ及び逆方向凡の何れの方向に走行されてい
ても正しくタイムコード・リーダーが製作し優るように
設けられている・不発Ｉｊ１１は斯るタイムコードＮ号
をドロップアウト等によるタイムコード信号の欠除部分
、誤再生部分等があっても常に正しいタイムコード信号
を出力することができる様にしたタイムフード信号読み
なり方法を提案せんとするものである。Seconds (XI (l and A1), 7V-A (X10 & A1)) are written in. Between these data, a 16-bit synchronization word, which is used as a single bit, is constructed. Bit (all @l”) synchronization signal and its 11
The direction of @oo" and @01" for each 2-pitsu reward added to Ki! It consists of f4J different value numbers. The direction issue number is set so that the time code reader will be produced correctly regardless of whether it is running in the tape, the surgical direction F, or the reverse direction.The misfiring Ij11 is such a time code N issue. The purpose of this invention is to propose a time hood signal reading method that can always output a correct time code signal even if there are missing parts or erroneously reproduced parts of the time code signal due to dropouts or the like.
以下図面を参照しながら本発明タイムコード信号読み取
り方法の〒実施例につき説明しよう。Embodiments of the time code signal reading method of the present invention will be described below with reference to the drawings.
第２図に於いて、（１）は編集装置を構成するＶＴＲテ
、 ｃノＶＴＲ（１）ノ出力１１１に館ＩｖＡＫ票ｆ如
１８ＭＰＴｌ］ｆタイムコード信１号を含む再生信号を
優、Ｃの再生信号を８ＭＰＴＢタイムコード信号リーダ
ー１２７に供給し、このタイムコード信号リーダー（２
）の出力信号をインターフェイス回路（３）を介して中
央処理装置ＣＰＵ、ツンダムアクセス、メモリＲＡＭ、
リードオンリーメモリＲＯＭ等を有するマイコン（４）
に供給する。In Fig. 2, (1) is a VTR constituting an editing device, and a reproduction signal containing a time code signal No. 1 is output to the output 111 of the VTR (1). The reproduced signal is supplied to the 8MPTB time code signal reader 127, and this time code signal reader (2
) is sent to the central processing unit CPU, Tundam Access, memory RAM,
Microcontroller with read-only memory ROM, etc. (4)
supply to.
本例に於いてはこのマイコン（４１に於いて次に述べる
如＊＊号処理を行う如くする。このマイコン（４７Ｋは
側３−′に不丁如＜ＶＴ凡ｔｉ）より観み出された今Ｉ
ＱＩ ノ８ＭＰＴＢ １４ Ａ コ−Ｖ’ｆｔ１号’１
’ＣＩＡｎか区−供給される１巌データ＠ （５Ｊと、
１圓に睨み出された８ＭＰＴＢタイムコード信号Ｔ（Ｊ
Ａｎ−１に最小単位即ち！フレームを付加した信号ＴＣ
２Ａ（ＴＣＩＡｎ−１＋１）を得るようにした相関デー
タ部（６）と、処理ルーチンに現在の８ＭＰＴＢタイム
ゴード信号ＴＣＲＡを供給する処理データ部（７１とを
有し、タイムコード信号を睨み取る際に第４図及び第５
図の７ｗ−チャートに示す如き相関１及び２の処理を行
うものである。In this example, this microcomputer (41) performs the following processing. Now I
QI ノ8MPTB 14 A CO-V'ft1No.'1
'CIAn-Ku-1 data provided @ (5J and
8MPTB time code signal T (J
An-1 is the minimum unit, that is! Signal TC with added frame
2A (TCIAn-1+1), and a processing data section (71) for supplying the current 8MPTB time code signal TCRA to the processing routine. Figures 4 and 5
The processing for correlations 1 and 2 as shown in the 7w-chart in the figure is performed.
本発明に於いては初めに第４図に示す如くして相関１を
取る。即ち前回に読み出したＳＭＰＴＦｉタイムコード
信号ＴＣＩＡｎ−１に基づいて相関データｌ５（６３テ
ｅ〕８ＭＰＴＩ Ｉ ４ Ａ ：ｌ−）’（ｉｌ（ＩＴ
−ＣＩＡａ−１に最小単位即ち１７レームを付加した信
号ＴＣ２Ａ（ＴＣＩＡｏ−ｔ＋１）を得ておき１次に今
回の８ＭＰＴｇメイムコード信号ＴＣＩＡａを読み出し
、この直接データ部（５）の今回の８ＭＰＴＦｉタイム
コード信号ＴＣＩＡａと相関データ５（６）の繭圓絖与
出した８ＭＰＴｇタイムコード偏号ＴＣＩＡａ−１に最
小単位を付加し＊＊号ＴＣ２Ａ（ＴＯＩ Ａｎ−１＋１
）とを比較し、これか−紋したとき相関ｌが成！した
とし、この−叙した今回の８ＭＰＴｌタイムコード信号
ＴＣＩＡｎを基準として相関２の処理をする。又この今
回の８ＭＦＴｉ！タイムコード信号ＴＣＩＡ１１と前回
読み出した８ＭＰＴＥタイムコード償号ＴＣＩＡａに最
小単位を付加した信号ＴＣ２Ａ（ＴＣＩＡｎ−ｔ＋１
）とが一致しない場合は今回の８ＭＰＴＢタイムコード
信号ＴＣＩ Ａｎに最小単位の１７レームを付加したも
のを相関データ部（６３Ｋ得、この相関データ部（６）
の信号ＴＣ２Ａ （ＴＣｔＡａ＋ｘ ）と直接データ部
（５７Ｋ得られる次回に読み出した８ＭＰＴ）３タイム
コ一ド信号ＴＣＩＡｎ−Ｈとを比較し、−次之勢が一致
するまで同様の動作を繰り返す。In the present invention, correlation 1 is first obtained as shown in FIG. That is, based on the previously read SMPTFi time code signal TCIAn-1, correlation data l5(63te)8MPTI I4A :l-)'(il(IT
- Obtain the signal TC2A (TCIAo-t+1) which is obtained by adding the minimum unit, that is, 17 frames to CIAa-1, first read out the current 8MPTg mayme code signal TCIAa, and read the current 8MPTFi time code of this direct data section (5). The minimum unit is added to the 8MPTg time code decoding TCIAa-1 obtained by combining the signal TCIAa and the correlation data 5 (6), and the **No. TC2A (TOI An-1+1
), and when this or - pattern is obtained, the correlation l is established! Assuming that, correlation 2 processing is performed using the current 8MPTl time code signal TCIAn described above as a reference. This time again, 8MFTi! The time code signal TCIA11 and the signal TC2A (TCIAn-t+1
) does not match, add the minimum unit of 17 frames to the current 8MPTB time code signal TCI An and add it to the correlation data section (63K obtained, this correlation data section (6)
The signal TC2A (TCtAa+x) is compared with the 3 time code signal TCIAn-H of the direct data section (8MPT read out next time which yields 57K), and the same operation is repeated until the -next trends match.
相関２は第５図のフローチャートに示す如くなされる。Correlation 2 is performed as shown in the flowchart of FIG.
相関ｌが酸室した後にも臘次８ＭＰＴＦｌタイムコード
偏号を軌み重重。このＩｍＷ７！データ５（５７の今回
読み出された８ＭＰＴＪｉｆタイムコード慎号ＴＣＩＡ
ａを相関データ部（６７Ｑ ＩＩＩ圓耽み出した８ｇＰ
Ｔｌタイムコード偵号’Ｔｅ（ｈａ−＊に・電小率位を
付ｍＪＬ−＆舊考・’ｌ；’０−２Ａ ＣＴＣｌ ｋｉ
−ｔ ｓ、＋４ ＋）とを比較、シ、これが−叙したと
龜はこのＩｌ［ｉＩデーメ＃ （５７の今＆ｇＪＷＩｔ
み出された５ａａｔ”ｒ赳タイムー−ド値号ＴＣＩＡＥ
Ｉｔｌ＆塩デーー鄭（７）に転送し、この８ＭＰ’ｉ”
Ｗタイムコード信号ＴＣＩＡ−を処理データ部（７）よ
り現８ＭＰＴＥタイムツード信号ＴＣＲＡとして処理ル
ーｆンに出力する。更にこのとき相関デーＪｆ［６ＪＥ
’この今回読み出した８ＭＰＴＩ！ｔタイムコード信
号ＴＣＩＡ口に基づいて、これに最小単位を付加した信
号（ＴＣＩＡｔＩ＋１ ）を転送し、これを次回の相関
データ部（６）の信号ＴＣ２Ａとし、更に本例ではこの
今回読み出した８ＭＰＴＥタイムコード信号ＴＣＩＡＥ
１に基づ−て３秒間即ち９０７レ一ム分だけ補償するた
めワークエリアに９ｏをストアし、３秒間即ち９０フレ
一ム間テープより読み出したタイムコード信号が欠除あ
るいは鵬再生されている場合にも補償することかで龜る
様にする。その後書びタイムコード信号を貌み重重。Even after the correlation l was released, the 8MPTFl time code was still decoordinated. This ImW7! Data 5 (8MPTJif time code code TCIA read out this time of 57)
a to the correlation data section (67Q III 8gP
Tl time code recei 'Te (ha-* with electronic small index mJL- & 舊 Thoughts 'l;'0-2A CTCl ki
-t s,+4
The discovered 5aat"r timed price number TCIAE
Transfer this 8MP'i to Itl & Salt Day Zheng (7)
The W time code signal TCIA- is output from the processing data section (7) to the processing loop f as the current 8MPTE time-to-date signal TCRA. Furthermore, at this time, the correlation data Jf[6JE
'This 8MPTI I read out this time! t Based on the time code signal TCIA port, a signal (TCIAtI+1) with the minimum unit added thereto is transferred, and this is used as the signal TC2A of the next correlation data section (6), and furthermore, in this example, the 8MPTE time read this time is Code signal TCIAE
Based on 1, 9o is stored in the work area to compensate for 3 seconds, or 907 frames, and the time code signal read from the tape for 3 seconds, or 90 frames, is deleted or partially reproduced. In some cases, compensation may be required to slow down the situation. Shigeshige then looked at the written time code signal.
又［Ｗ！データ５（５）の今回読み出した８ＭＰＴＦｌ
ｉタイムコード信号ＴＣＩＡｎと相関データ部（６Ｊの
信号ＴＣ２Ａとが−叙しなかったとき仁の相関データ部
ｔ６Ｊの信号ＴＣ２Ａを処理データ４ （７３Ｋ転送し
、この相関データ鄭（６）の信号ＴＣ２人を錫塩データ
部（７）より視１＃ＭＰＴｊｌｉタイムコードｇ１号’
ｒｅ凡人として処場ル−チンに出力する。又このとき、
この相関データ部（６）の信号Ｔａ２ムに最小単位即ち
ｌフレームを付加し、これを相関データ部（６）の信号
とすると共にワークエリアの９０より１差し引く、この
状態が続いたときは上述動作を繰り返しＶＴＲ（１）の
再生信号中のａＭＰＴｌタイムコード信号が一致しない
部分又は欠除している部分を補間する。この鳩舎ワーク
エリアにストアされている９０に対応する９０フレ一五
分だけ補償することができる。Also [W! 8MPTFl read this time of data 5 (5)
i When the time code signal TCIAn and the signal TC2A of the correlation data section (6J) are not specified, the signal TC2A of the correlation data section t6J of Jin is transferred to the processed data 4 (73K), and this correlation data is transferred to the signal TC2 of the correlation data section t6J. Viewing people from the tin salt data section (7) 1#MPTjli time code g1'
Re output to the routine as an ordinary person. At this time again,
Add the minimum unit, ie, 1 frame, to the signal Ta2m of this correlation data section (6), make this the signal of the correlation data section (6), and subtract 1 from the work area 90. If this state continues, the above The operation is repeated to interpolate the portions where the aMPTI time code signals do not match or are missing in the reproduced signal of the VTR (1). It is possible to compensate only 15 minutes of 90 frames corresponding to 90 stored in this pigeon house work area.
この状態が９０フレ一五分以上となったときは新めて今
１１ｍみ出した８ＭＰ’ｒｌｉｆタイムコード信号ＴＣ
Ｉ Ａｎを正しいとし、これに最小単位即ちｌフレーム
を付加した信号（ＴＣＩＡｎ＋１ ）を相関データ部（
６１に転送し、これを相関データ部（６）の信号Ｔ（Ｊ
Ａとし、このとき再びワークエリアに新たに数字９０を
ストアし、その後再びタイム；−ド信号を読み出す。When this state reaches 90 frets 15 minutes or more, a new 8MP'rlif time code signal TC that has now protruded 11 m.
Assuming that I An is correct, the signal (TCIAn+1) obtained by adding the minimum unit, ie, l frame, to this is the correlation data part (
61 and transmits it to the signal T(J
A, and at this time, a new number 90 is stored in the work area again, and then the time signal is read out again.
本発明は上述の様にして８ＭＰＴｌタイム＝−ド信号を
順次読み出すものである。The present invention sequentially reads out the 8 MPTl time=-do signals as described above.
以上述べた如く本発明に於いては相隣れるコードの相関
を利用し、この相関が成立したときにこれをタイムコー
ド信号の基準としてタイムコード信号の補間な行５様に
しているので、正しいタイムコード信号が読み出された
と幹から補間期間に関係なく、正しいタイムコード信号
を読み出すことがで幹、る。As mentioned above, in the present invention, the correlation between adjacent codes is used, and when this correlation is established, this is used as the reference for the time code signal and the time code signal is interpolated in the 5th row, so that the correct Once the time code signal is read out, the correct time code signal can be read out from the main unit regardless of the interpolation period.
尚上達実施例に於いては相関ＩＫ於いて相隣れるタイム
コード信号の相関が１回成立したときにこれを正しいタ
イムコード信号としたが、この代９にこの相関が複数回
成立したときに正しいタイムコード信号としても＾いこ
とは勿論である。又上述実施例に於いてはタイムコード
信号の読み出し願書に従って相関ｌを取る様にしたが、
このタイムコード信号の読み出し願の第１番目ｉ第２誉
目、第３番目と第４番目、第５番目と第６番目・・・・
・・・・とり関係で相関を取る様にしても良いことは容
ｓｋ環解できよ５．又上述実施例に於い【は８ＭＰＴｌ
タイムコード信号を読み肖す例につき述べたｐ驚、′そ
の他のタイムコード信号な読み出す鳩舎に゛も本発明を
使用できることは勿論である。In addition, in the improvement embodiment, when the correlation between adjacent time code signals is established once in the correlation IK, this is considered to be the correct time code signal, but when this correlation is established multiple times in this period 9, Of course, it is also incorrect as a correct time code signal. In addition, in the above embodiment, the correlation l is taken according to the time code signal reading application.
The 1st, 2nd, 3rd and 4th, 5th and 6th requests for reading this time code signal...
...It can be clearly understood that it is okay to take the correlation based on the relationship.5. Also, in the above embodiment, [ is 8MPTl
Although the present invention has been described with reference to the example of reading a time code signal, it goes without saying that the present invention can also be used in pigeonholes for reading other time code signals.
又本発明は上述実施例に限らず本発明の１！讐を逸脱す
ることなくその他種々の構成が取り得ることは勿論であ
る。。Further, the present invention is not limited to the above-mentioned embodiments, but also includes 1! Of course, various other configurations can be taken without departing from the scope. .
第１図、第２図、第３図、第４図及び第５図は夫々本発
明タイムブード信号読４１！つ方法の一実施例の説！ｌ
ｌＫ供する線図である。
第２図
第３図
又■里デー７1, 2, 3, 4, and 5 respectively show the time bood signal reading 41! of the present invention! An example of a method! l
FIG. Figure 2 Figure 3 Matasato Day 7
Claims (1)
一ド信号と前回読み出したタイムコード信号に最小単位
を付加した信号とを比較し、該比較が１回又は数回一致
したときによｍｌｌ耽読出したタイムコード信号が正し
いと判断し、以後上記耽読み出したタイムコード信号を
基準としてタイムコード信号の補間な行う様にしたこと
を特徴とするタイムコード信号の読み城り方法。When reading a time code signal, compare the time code signal read just now with the signal obtained by adding the minimum unit to the time code signal read last time, and when the comparison matches once or several times, read out the time code signal. A method for reading a time code signal, characterized in that the time code signal read out is determined to be correct, and thereafter the time code signal is interpolated using the time code signal read out as a reference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56175270A JPS5877083A (en) | 1981-10-31 | 1981-10-31 | Reading method of time code signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56175270A JPS5877083A (en) | 1981-10-31 | 1981-10-31 | Reading method of time code signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5877083A true JPS5877083A (en) | 1983-05-10 |
| JPH0341918B2 JPH0341918B2 (en) | 1991-06-25 |
Family
ID=15993207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56175270A Granted JPS5877083A (en) | 1981-10-31 | 1981-10-31 | Reading method of time code signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5877083A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61242370A (en) * | 1985-04-19 | 1986-10-28 | Victor Co Of Japan Ltd | Discontinuous point extracting device |
| JPS6265286A (en) * | 1985-09-17 | 1987-03-24 | Casio Comput Co Ltd | Block address generating circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316538A (en) * | 1976-07-29 | 1978-02-15 | Sony Corp | Address detector |
| JPS5693159A (en) * | 1979-12-25 | 1981-07-28 | Sony Corp | Error correcting system for advance data |
-
1981
- 1981-10-31 JP JP56175270A patent/JPS5877083A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316538A (en) * | 1976-07-29 | 1978-02-15 | Sony Corp | Address detector |
| JPS5693159A (en) * | 1979-12-25 | 1981-07-28 | Sony Corp | Error correcting system for advance data |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61242370A (en) * | 1985-04-19 | 1986-10-28 | Victor Co Of Japan Ltd | Discontinuous point extracting device |
| JPH0766654B2 (en) * | 1985-04-19 | 1995-07-19 | 日本ビクター株式会社 | Discontinuity extraction device |
| JPS6265286A (en) * | 1985-09-17 | 1987-03-24 | Casio Comput Co Ltd | Block address generating circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0341918B2 (en) | 1991-06-25 |
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