JPS6428581U - - Google Patents
Info
- Publication number
- JPS6428581U JPS6428581U JP12386487U JP12386487U JPS6428581U JP S6428581 U JPS6428581 U JP S6428581U JP 12386487 U JP12386487 U JP 12386487U JP 12386487 U JP12386487 U JP 12386487U JP S6428581 U JPS6428581 U JP S6428581U
- Authority
- JP
- Japan
- Prior art keywords
- index
- track
- recording
- circuit
- signal
- 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
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Management Or Editing Of Information On Record Carriers (AREA)
Description
第1図は本考案に係る空トラツク検索回路のブ
ロツク図、第2図は磁気デイスクの信号記録領域
及びインデツクストラツクを表わす図、第3図は
インデツクストラツクの信号記録状態及び再生信
号の変化を表わす図、第4図及び第5図は回路動
作を表わすフローチヤートである。
2…信号記録領域、3…インデツクストラツク
、X…インデツクス再生信号、Y…ドロツプアウ
ト検出信号。
Fig. 1 is a block diagram of an empty track search circuit according to the present invention, Fig. 2 is a diagram showing the signal recording area of a magnetic disk and an index track, and Fig. 3 is a diagram showing the signal recording state of the index track and changes in the reproduced signal. FIGS. 4 and 5 are flowcharts showing circuit operations. 2... Signal recording area, 3... Index track, X... Index playback signal, Y... Dropout detection signal.
Claims (1)
生用ヘツド6を移動せしめるヘツド移送装置を装
備すると共に、ヘツド6に信号記録系7を接続し
て、デイスク信号面の信号記録領域2に同心円状
の信号トラツクを形成するデイスク記録装置に於
いて、前記ヘツド移送装置を制御してヘツド6を
前記信号記録領域2の外部に設けたインデツクス
トラツク3上に設定することが可能な駆動制御回
路24と、インデツクストラツク3に対し信号記
録領域2の各信号トラツク毎の記録/未記録判別
情報を書き込むインデツクス記録回路と、インデ
ツクストラツク3から記録/未記録判別情報を読
み出して出力するインデツクス再生回路と、前記
駆動制御回路24、インデツクス記録回路、及び
インデツクス再生回路の動作を制御するシステム
制御回路11とから構成され、該制御回路11に
は、信号記録領域2への記録開始前にインデツク
ストラツク3の再生を指令する第1制御部と、信
号記録領域2への記録終了後にインデツクストラ
ツク3の更新記録を指令する第2制御部とが設定
されていることを特徴とするデイスク記録装置の
空トラツク検索回路。 It is equipped with a head transfer device that moves the signal recording and reproducing head 6 in the radial direction of the disk that rotates at high speed, and a signal recording system 7 is connected to the head 6 to record concentric signals in the signal recording area 2 on the signal surface of the disk. In a disk recording device forming a track, a drive control circuit 24 capable of controlling the head transfer device to set the head 6 on the index track 3 provided outside the signal recording area 2; an index recording circuit that writes recorded/unrecorded discrimination information for each signal track in the signal recording area 2 to the index track 3; an index playback circuit that reads and outputs the recorded/unrecorded discrimination information from the index track 3; It is composed of a system control circuit 11 that controls the operations of the drive control circuit 24, the index recording circuit, and the index reproducing circuit. An empty track of a disk recording device, characterized in that a first control section instructs playback, and a second control section instructs update recording of an index track 3 after completion of recording in a signal recording area 2. search circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12386487U JPS6428581U (en) | 1987-08-12 | 1987-08-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12386487U JPS6428581U (en) | 1987-08-12 | 1987-08-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6428581U true JPS6428581U (en) | 1989-02-20 |
Family
ID=31373104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12386487U Pending JPS6428581U (en) | 1987-08-12 | 1987-08-12 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6428581U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6299972A (en) * | 1985-10-25 | 1987-05-09 | Sony Corp | Recording device |
-
1987
- 1987-08-12 JP JP12386487U patent/JPS6428581U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6299972A (en) * | 1985-10-25 | 1987-05-09 | Sony Corp | Recording device |