JPS63157809U - - Google Patents
Info
- Publication number
- JPS63157809U JPS63157809U JP4585587U JP4585587U JPS63157809U JP S63157809 U JPS63157809 U JP S63157809U JP 4585587 U JP4585587 U JP 4585587U JP 4585587 U JP4585587 U JP 4585587U JP S63157809 U JPS63157809 U JP S63157809U
- Authority
- JP
- Japan
- Prior art keywords
- mode
- section
- tape
- judgment
- head
- 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
- 238000005259 measurement Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Description
図面は本考案の一実施例を示すブロツク図であ
る。
１……キー入力部、２……モード判定部、３…
…計測部、４……基準入力信号源、５……テープ
巻取り巻戻し部、６……ビデオ回路モード切換部
、７……ビデオヘツド、８……検出部、９……基
準レベル発生源、１０……出力部。
The drawing is a block diagram showing an embodiment of the present invention. 1...Key input section, 2...Mode determination section, 3...
...Measurement section, 4...Reference input signal source, 5...Tape winding and rewinding section, 6...Video circuit mode switching section, 7...Video head, 8...Detection section, 9...Reference level generation source , 10...output section.
Claims (1)
るとともに、該判定モードが記録モードから記録
以外のモードに切換つたときに判定出力を発する
モード判定部と、 前記モード判定部が判定出力を発してから所定
量の基準入力信号を計測する計測部と、 前記モード判定部が判定出力を発してから前記
計測部が計測を終了するまでの期間テープを巻戻
し、巻戻し終了後該巻戻されたテープ量と同一量
のテープを巻取るテープ巻取り巻戻し部と、 前記テープ巻取り巻戻し部が巻取り動作を行な
つている期間中にビデオヘツドを再生モードに切
換えるビデオ回路モード切換部と、 前記ビデオ回路モード切換部によつて再生モー
ドに切換えられている期間中の再生信号レベルと
基準信号レベルを比較してヘツドが目づまり状態
にあるか否かを判定する比較部とを備えたことを
特徴とするヘツド目づまり検出機能付ビデオテー
プレコーダ。[Claims for Utility Model Registration] A mode determining unit that determines an operation mode designated by a key operation and outputs a determination output when the determination mode is switched from a recording mode to a mode other than recording; and the mode determining unit a measurement section that measures a predetermined amount of reference input signal after the mode judgment section issues a judgment output; and a measuring section that rewinds the tape for a period from when the mode judgment section issues a judgment output until the measurement section ends the measurement, and the rewinding is completed. a tape winding/rewinding unit that winds the same amount of tape as the rewound tape; and switching the video head to a playback mode while the tape winding/unwinding unit is performing the winding operation. A video circuit mode switching section compares a reproduction signal level during a period in which the video circuit mode switching section switches to the reproduction mode with a reference signal level to determine whether or not the head is in a clogged state. A videotape recorder with a head clogging detection function, characterized in that it is equipped with a comparison section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4585587U JPS63157809U (en) | 1987-03-30 | 1987-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4585587U JPS63157809U (en) | 1987-03-30 | 1987-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63157809U true JPS63157809U (en) | 1988-10-17 |
Family
ID=30864977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4585587U Pending JPS63157809U (en) | 1987-03-30 | 1987-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63157809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181111U (en) * | 1988-06-14 | 1989-12-27 |
-
1987
- 1987-03-30 JP JP4585587U patent/JPS63157809U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181111U (en) * | 1988-06-14 | 1989-12-27 |
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