JPH02798B2 - - Google Patents
Info
- Publication number
- JPH02798B2 JPH02798B2 JP56026672A JP2667281A JPH02798B2 JP H02798 B2 JPH02798 B2 JP H02798B2 JP 56026672 A JP56026672 A JP 56026672A JP 2667281 A JP2667281 A JP 2667281A JP H02798 B2 JPH02798 B2 JP H02798B2
- Authority
- JP
- Japan
- Prior art keywords
- tape
- song
- recording time
- time
- designated
- 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.)
- Expired - Lifetime
Links
- 230000004044 response Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
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
- G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
- G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer
- G11B27/17—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer using electrical sensing means
-
- 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
- G11B27/34—Indicating arrangements
-
- 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)
Description
【発明の詳細な説明】
本発明は記録時間測定装置に関し、特に既にテ
ープに記録された曲の記録時間長を測定する装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording time measuring device, and more particularly to a device for measuring the recording time length of a song already recorded on a tape.
テープにおける既録音部分の記録時間を測定す
る場合には、記録部分の始期部分を見出し、テー
プレコーダ内蔵のストツプウオツチをリセツトし
て再生操作を行い、記録部分の終期において停止
させる方法がある。かゝる方法においては、実際
の記録時間に等しい測定時間を要し即座に記録時
間長を求めることができない欠点がある。 When measuring the recording time of a previously recorded portion of a tape, there is a method of finding the beginning of the recorded portion, resetting the stop watch built into the tape recorder, performing a playback operation, and stopping at the end of the recorded portion. Such a method has the disadvantage that it requires measurement time equal to the actual recording time and cannot immediately determine the recording time length.
従つて、本発明の目的は記録時間長を従来に比
し極めて短時間に測定し得る記録時間測定装置を
提供することである。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a recording time measuring device that can measure the recording time length in a much shorter time than conventional methods.
本発明による記録時間測定装置は、記録時間を
測定すべき指定曲番を示す指令信号を発生する手
段と、指令信号が示す指定曲番を記憶する手段
と、指令信号に応答してテープの定速早送り制御
をなす手段と、テープの定速早送り中に指定曲番
に相当する曲の始期及び終期を検出する手段と、
始期及び終期検出時におけるテープリールの回転
周期を夫々測定する手段と、測定された各回転周
期に応じて所定演算式により始期及び終期の間の
テープ量を算出する演算手段とを含み、該演算手
段により得られたテープ量に基づき前指定曲番の
曲記録時間を得るようにしたことを特徴としてい
る。 The recording time measuring device according to the present invention includes means for generating a command signal indicating a designated track number for which recording time is to be measured, means for storing the designated track number indicated by the command signal, and a means for recording a tape in response to the command signal. means for performing fast forward control; means for detecting the beginning and end of a song corresponding to a designated song number during constant fast forwarding of the tape;
means for measuring the rotation period of the tape reel at the time of detecting the start period and the end period, and a calculation means for calculating the amount of tape between the start period and the end period according to a predetermined calculation formula according to each measured rotation period; The present invention is characterized in that the song recording time of the previously designated song number is obtained based on the tape amount obtained by the means.
以下に、本発明について図面を用いて説明す
る。 The present invention will be explained below with reference to the drawings.
第１図は本発明の一実施例の概略ブロツク図で
あり、１はサプライリールであり、２はテークア
ツプリールを示している。これら両テープリール
１及び２の各回転周期Ts及びTtを夫々検出すべ
く、回転周期検出器３及び４が設けられており、
これら検出器は、例えばタコゼネレータや回転ス
リツト板と発光受光素子対による回転検出器構成
を用いて回転数を検出するようになつており、こ
の回転数により各周期Ts及びTtを示すデータ信
号を得るようになされた周知の構成である。 FIG. 1 is a schematic block diagram of an embodiment of the present invention, in which 1 is a supply reel and 2 is a take-up reel. Rotation period detectors 3 and 4 are provided to detect the rotation periods Ts and Tt of both tape reels 1 and 2, respectively.
These detectors detect the number of rotations using, for example, a rotation detector configuration consisting of a tachometer generator, a rotating slit plate, and a pair of light emitting and receiving elements, and obtain data signals indicating each period Ts and Tt from this rotation number. This is a well-known configuration.
これら各検出器３及び４により得られたデータ
信号を所定周期毎にラツチ（記憶）するラツチ回
路５及び６が設けられており、これらラツチ出力
がテープ量の演算をなす演算回路７へ入力され
る。この演算回路７においては、両テープリール
１及び２の回転周期Ts・Ttに応じたデータ信号
と更には定数発生器８からの定数信号とを用いて
所定の演算式に従つた演算処理がなされる。 Latch circuits 5 and 6 are provided to latch (store) data signals obtained by these detectors 3 and 4 at predetermined intervals, and the outputs of these latches are input to an arithmetic circuit 7 that calculates the amount of tape. Ru. In this arithmetic circuit 7, arithmetic processing is performed according to a predetermined arithmetic formula using data signals corresponding to the rotation periods Ts and Tt of both tape reels 1 and 2 and a constant signal from a constant generator 8. Ru.
サプライ及びテークアツプ両リール回転周期を
Ts及びTtとすると、テープ残量L1及びテープ走
行量L2は夫々次式で示される。 Supply and take-up reel rotation period
Assuming Ts and Tt, the remaining tape amount L 1 and tape running amount L 2 are respectively expressed by the following equations.
L1＝K1・Ts2−K2又は
K1′／｛１＋（Tt／Ts）2｝−K2′ ……(1)
L2＝K1・Tt2−K2又は
K1′／｛１＋（Ts／Tt）2｝−K2′ ……(2)
こゝに、K1、K1′、K2及びK2′はリールのハブ
径、テープ厚及びテープ速度により定まる定数で
ある。従つて、テープ残量L1及び走行量L2はテ
ープ速度が一定定である限りリールの回転周期を
測定することによつて(1)、(2)式に従い容易に算出
して求めることができることになり、演算回路７
において(1)、(2)式に従つた演算がなされるもので
ある。L 1 =K 1・Ts 2 −K 2 or K 1 ′/{1+(Tt/Ts) 2 }−K 2 ′ ...(1) L 2 =K 1・Tt 2 −K 2 or K 1 ′/ {1+(Ts/Tt) 2 }−K 2 ′...(2) Here, K 1 , K 1 ′, K 2 and K 2 ′ are constants determined by the reel hub diameter, tape thickness, and tape speed. be. Therefore, as long as the tape speed remains constant, the remaining amount of tape L 1 and running amount L 2 can be easily calculated according to equations (1) and (2) by measuring the rotation period of the reel. This means that the calculation circuit 7
In this case, calculations according to equations (1) and (2) are performed.
一方、曲記録時間の測定を指令すべくキーボー
ド９が設けられており、時間測定開始スイツチ
（図示せず）操作に応答して正方向早送り（又は
逆方向早送り）指令信号が発生され、動作モード
を早送り状態に制御する。また、キーボード９内
の指定曲番入力スイツチ（図示せず）の操作に応
じてこの指定曲番が記憶回路１０に記憶される。
そして曲間検出回路１１が設けられており、この
曲間検出出力が先の記憶回路１０の記憶出力と共
に指定曲番始・終期検出器１２に入力されて、指
定曲番における始期及び終期が検出される。尚、
１３は記録時間表示器であつて、演算回路７にお
ける演算結果を記憶する記憶回路１４の記録時間
を表示するものである。 On the other hand, a keyboard 9 is provided to command the measurement of song recording time, and a forward fast forward (or reverse fast forward) command signal is generated in response to operation of a time measurement start switch (not shown), and an operation mode is set. to fast-forward. Further, in response to the operation of a designated music number input switch (not shown) in the keyboard 9, this designated music number is stored in the storage circuit 10.
A song interval detection circuit 11 is provided, and the song interval detection output is inputted to a specified song number start/end detector 12 together with the memory output of the previous memory circuit 10 to detect the start and end of the specified song number. be done. still,
Reference numeral 13 denotes a recording time display, which displays the recording time of the storage circuit 14 that stores the calculation results of the calculation circuit 7.
かゝる構成において、第２図を参照して動作を
説明する。先ず、テープ位置が第２図に示す如く
第２番目の曲の中間にあつた時（t0）に曲時間測
定指令がなされ、測定されるべき曲番が第３曲目
であつたとする、この時刻t0において、システム
がテープ早送りモードに制御されて順方向早送り
がなされる。従つて、テープは以後一定の早送り
スピードをもつて送られることになる。この早送
り時において、指定曲番始・終期検出器１２は指
定曲番信号と曲間検出信号とにより、指定された
第３番日の曲の始期t1と終期t2とを検知する。時
刻t1において始期検出信号が検出器１２から発生
されると演算回路７が活性化されて、その時
（t1）のサプライリール１の回転周期Tsと定数
K1、K2に基づいて(1)式のテープ残量L1の演算が
なされ、記憶回路１４に一時記憶される。 The operation of such a configuration will be explained with reference to FIG. First, suppose that the song time measurement command is issued when the tape position is in the middle of the second song (t 0 ) as shown in Figure 2, and the song number to be measured is the third song. At time t 0 , the system is controlled to tape fast-forward mode and forward fast-forward is performed. Therefore, the tape will thereafter be fed at a constant fast forward speed. During this fast-forwarding, the designated song number start/end detector 12 detects the start time t 1 and end time t 2 of the song on the designated third day using the specified song number signal and the song interval detection signal. When the start detection signal is generated from the detector 12 at time t 1 , the arithmetic circuit 7 is activated, and the rotation period Ts and constant of the supply reel 1 at that time (t 1 ) are activated.
Based on K 1 and K 2 , the remaining tape amount L 1 is calculated using equation (1) and is temporarily stored in the storage circuit 14 .
時刻t2において終期検出信号が検出器１２から
発生されると再び演算回路７が活性化されて、そ
の時（t2）のサプライリール１の回転周期Tsと
定数K1、K2に基づき同じくテープ残量L1の演算
がなされる。この演算結果と記憶回路１４に記憶
されていた先の演算結果と演算回路７にて減算処
理され、この減算値が記憶回路１４に入力される
ことになる。この減算結果は第３曲目の記録テー
プ長であつて、記録時間に対応しているからこれ
が表示器１３にて時間表示され、指定曲番の記録
時間の測定がなされたことになる。 When the end detection signal is generated from the detector 12 at time t 2 , the arithmetic circuit 7 is activated again, and based on the rotation period Ts of the supply reel 1 at that time (t 2 ) and the constants K 1 and K 2 , the same tape is detected. The remaining amount L1 is calculated. This calculation result and the previous calculation result stored in the storage circuit 14 are subtracted in the calculation circuit 7, and this subtracted value is input to the storage circuit 14. The result of this subtraction is the recording tape length of the third song and corresponds to the recording time, so this time is displayed on the display 13, and the recording time of the designated song number has been measured.
尚、指定曲の番号としてマイナスの数値をキー
ボード９により入力すると、逆方向早送りモード
となり上記と同様な手順で曲時間が測定される
が、この場合にはテークアツプリール２の回転周
期Ttが用いられることになる。また、(2)式を用
いても曲記録時間の演算測定は可能であるので
(1)、(2)式のいずれを用いても良いものである。 If a negative number is entered as the number of the specified song using the keyboard 9, the mode will be set to reverse fast forward mode, and the song time will be measured in the same manner as above, but in this case, the rotation period Tt of the take-up reel 2 will be used. It will be done. Also, it is possible to calculate the song recording time using equation (2).
Either equation (1) or (2) may be used.
第３図は本発明の他の実施例の概略ブロツク図
であり、第１図と同等部分は同一符号により示さ
れている。本例においては、第１図の演算回路
７、定数発生回路８、指定曲番始・終期検出器１
２及び記憶回路１４をすべてマイクロコンピユー
タ等のマイクロプロセツサ１５により構成してよ
り複雑な時間測定処理を可能としたものであり、
特にプログラム選曲装置１６を有するテープレコ
ーダに適用した場合の例が示されている。尚、１
７はプログラム選曲装置に付随する指定曲番表示
器を示している。 FIG. 3 is a schematic block diagram of another embodiment of the invention, in which parts equivalent to those in FIG. 1 are designated by the same reference numerals. In this example, the arithmetic circuit 7, constant generation circuit 8, designated music number start/end detector 1 shown in FIG.
2 and the memory circuit 14 are all configured by a microprocessor 15 such as a microcomputer to enable more complicated time measurement processing,
In particular, an example in which the present invention is applied to a tape recorder having a program selection device 16 is shown. Furthermore, 1
Reference numeral 7 indicates a designated song number display attached to the program song selection device.
第４図は第３図の回路ブロツクの一動作態様を
示す図であり、第１曲目の途中からスタートして
第２曲及び第４曲目の合計された記録時間を測定
表示する場合の例である。時刻t0においてシステ
ムはテープ早送りモード動作となり、CPU（マイ
クロコンピユータを機能的に代表させたもの）１
５において、プログラム選曲装置１６及び曲間検
出器１１による各種制御信号に基づいて、指定さ
れた第２曲及び第４曲目の各始期t1、t3及び各終
期t2、t4が夫々検知され、各時期におけるテープ
残量L1すなわちテープ終端からのテープの絶対
位置が(1)式（又は(2)式）に基づいて算出されるこ
とになる。 FIG. 4 is a diagram showing one operation mode of the circuit block in FIG. 3, and is an example of measuring and displaying the total recording time of the second and fourth songs starting from the middle of the first song. be. At time t 0 , the system operates in tape fast forward mode, and CPU (functionally representative of a microcomputer) 1
5, the start times t 1 and t 3 and the end times t 2 and t 4 of the specified second and fourth songs are detected, respectively, based on various control signals by the program selection device 16 and the inter-song detector 11. Then, the remaining tape amount L1 at each period, that is, the absolute position of the tape from the end of the tape, is calculated based on equation (1) (or equation (2)).
そして、時刻t1及びt2における演算結果の差、
更には時刻t3及びt4における演算結果の差が夫々
求められ、これら各差の値が最終的に加算され
て、第２及び第４曲の記録時間の合計として表示
器１３にて表示される。 Then, the difference between the calculation results at times t 1 and t 2 ,
Furthermore, the differences between the calculation results at times t3 and t4 are determined, and the values of these differences are finally added up and displayed on the display 13 as the total recording time of the second and fourth songs. Ru.
第５図は、第３図のブロツクに示す装置の一般
的な動作を行わせるためのフローチヤートであ
り、このチヤートに示す手順に沿つてCPU１５
が作動して指定曲の時間長を測定する。 FIG. 5 is a flowchart for performing the general operation of the device shown in the blocks of FIG.
is activated and measures the duration of the specified song.
叙上の如く、本発明によればテープ早送りの状
態で記録時間長を測定するものであるから、従来
例に比し著しく短時間で記録時間の測定が可能と
となる利点がある。 As described above, according to the present invention, since the recording time length is measured while the tape is being rapidly forwarded, there is an advantage that the recording time can be measured in a significantly shorter time than in the conventional example.
第１図は本発明の一実施例のブロツク図、第２
図は第１図のブロツクの動作を示す図、第３図は
本発明の他の実施例のブロツク図、第４図は第３
図のブロツクの動作を示す図、第５図は第３図の
ブロツクの動作のためのフローチヤートである。
主要部分の符号の説明、１，２……テープリー
ル、３，４……回転周期検出器、７……演算回
路、８……定数発生器、１０……曲番記憶回路、
１１……曲間検出回路、１２……指定曲番始・終
期検出器。
FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
The figures are diagrams showing the operation of the blocks in Figure 1, Figure 3 is a block diagram of another embodiment of the present invention, and Figure 4 is a diagram showing the operation of the blocks in Figure 1.
FIG. 5 is a flowchart for the operation of the block in FIG. 3. Explanation of symbols of main parts, 1, 2...Tape reel, 3, 4...Rotation period detector, 7...Arithmetic circuit, 8...Constant generator, 10...Track number storage circuit,
11... Song interval detection circuit, 12... Specified song number start/end detector.
Claims (1)
号を発生する手段と、前記指令信号が示す前記指
定曲番を記憶する手段と、前記指令信号に応答し
てテープの定速早送り制御をなす手段と、前記テ
ープの定速早送り中に前記指定曲番に相当する曲
の始期及び終期を検出する手段と、前記始期及び
終期検出時におけるテープリールの回転周期を
夫々測定する手段と、測定された前記各回転周期
に応じて所定演算式により前記始期及び終期の間
のテープ量を算出する演算手段とを含み、前記演
算手段により得られたテープ量に基づき前記指定
曲番の曲記録時間を得るようにしたことを特徴と
する記録時間測定装置。1. Means for generating a command signal indicating a designated song number for which recording time is to be measured, means for storing the designated song number indicated by the command signal, and constant speed fast forwarding control of the tape in response to the command signal. means for detecting the start and end of a song corresponding to the specified song number during constant fast forwarding of the tape; and means for measuring the rotation period of the tape reel at the time of detecting the start and end, respectively; calculation means for calculating the amount of tape between the starting period and the end period according to a predetermined calculation formula according to each of the rotation periods, and calculating the song recording time of the designated song number based on the tape amount obtained by the calculation means. A recording time measuring device characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56026672A JPS57141084A (en) | 1981-02-25 | 1981-02-25 | System for measuring recording time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56026672A JPS57141084A (en) | 1981-02-25 | 1981-02-25 | System for measuring recording time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57141084A JPS57141084A (en) | 1982-09-01 |
| JPH02798B2 true JPH02798B2 (en) | 1990-01-09 |
Family
ID=12199881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56026672A Granted JPS57141084A (en) | 1981-02-25 | 1981-02-25 | System for measuring recording time |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57141084A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812940A (en) * | 1986-06-20 | 1989-03-14 | Olympus Optical Co., Ltd. | Dictation display for displaying present position and cue mark position information |
| KR0129997B1 (en) * | 1992-08-31 | 1998-04-18 | 윤종용 | Calculating method for remainder of reel tape for video cassette recorder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132323A (en) * | 1977-04-22 | 1978-11-18 | Sharp Corp | Display system of tape play time or tape play remaining time |
| JPS54158912A (en) * | 1978-06-05 | 1979-12-15 | Pioneer Electronic Corp | Device for detecting tape amount |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4848612U (en) * | 1971-10-11 | 1973-06-26 |
-
1981
- 1981-02-25 JP JP56026672A patent/JPS57141084A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132323A (en) * | 1977-04-22 | 1978-11-18 | Sharp Corp | Display system of tape play time or tape play remaining time |
| JPS54158912A (en) * | 1978-06-05 | 1979-12-15 | Pioneer Electronic Corp | Device for detecting tape amount |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57141084A (en) | 1982-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4338645A (en) | Tape running time indication system | |
| KR910008466B1 (en) | Apparatus for displaying of the amount of tape wound up | |
| EP0241849B1 (en) | Apparatus for detecting the position of a tape when recording or reproducing signals thereon | |
| JPH0561705B2 (en) | ||
| JPH0561703B2 (en) | ||
| JP2556144B2 (en) | Selection device for selecting music for tape recorders | |
| JPH02798B2 (en) | ||
| JPH0110800Y2 (en) | ||
| JPS6237455B2 (en) | ||
| JPS5948470B2 (en) | Tape amount calculation device | |
| JP2629232B2 (en) | Tape recorder | |
| JPS6224363Y2 (en) | ||
| JPS6149746B2 (en) | ||
| JP2640048B2 (en) | Tape running time display method | |
| JPS6146906B2 (en) | ||
| JPS6052990A (en) | Tape feeding quantity detecting device | |
| JP2727581B2 (en) | Disc dubbing system | |
| JPH0227755B2 (en) | ||
| JPS5828670B2 (en) | Calculation time calculation method for magnetic recording/reproducing device | |
| JPH0226313B2 (en) | ||
| JPS5968884A (en) | Detecting system of tape residual amount | |
| JPH0877759A (en) | Residual quantity period detection device of tape | |
| JP2961861B2 (en) | How to measure the recording time of a cassette tape | |
| JPS5922253A (en) | Automatic switching device of speed of magnetic tape | |
| JPS638551B2 (en) |