JPS59142989U - Dirt detection display device in information reading device - Google Patents

Dirt detection display device in information reading device

Info

Publication number
JPS59142989U
JPS59142989U JP3727583U JP3727583U JPS59142989U JP S59142989 U JPS59142989 U JP S59142989U JP 3727583 U JP3727583 U JP 3727583U JP 3727583 U JP3727583 U JP 3727583U JP S59142989 U JPS59142989 U JP S59142989U
Authority
JP
Japan
Prior art keywords
signal
dirt
dirt detection
generating
detection
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
Application number
JP3727583U
Other languages
Japanese (ja)
Other versions
JPH0643901Y2 (en
Inventor
保坂　利彦
英宏 石井
Original Assignee
パイオニア株式会社
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 パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP1983037275U priority Critical patent/JPH0643901Y2/en
Priority to DE19843409557 priority patent/DE3409557A1/en
Priority to GB08406780A priority patent/GB2137799B/en
Priority to FR8404009A priority patent/FR2547097A1/en
Publication of JPS59142989U publication Critical patent/JPS59142989U/en
Application granted granted Critical
Publication of JPH0643901Y2 publication Critical patent/JPH0643901Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は、本考案による情報読取装置における汚れ検出
表示装置を示すブロック図、第２図乃至第８図は本考案
の他の実施例を各々示すブロック図である。 主要部分の符号の説明、１・・・ピックアップ装置、２
・・・ドロップアウト検出器、３．１７．１９・・・カ
ウンタ回路、４・・・タイマ、５・・・表示器、６．２
０・・・積分器、？、　　９．　１２．　１４．　１６
．　２１・・・比較器、８．１３・・・エンベロープ検
出器、１０゜１５・・・パルス幅検出器、１１・・・レ
ベル検出器、１８・・・符号誤り検出回路。FIG. 1 is a block diagram showing a dirt detection and display device in an information reading device according to the present invention, and FIGS. 2 to 8 are block diagrams showing other embodiments of the present invention. Explanation of symbols of main parts, 1...Pickup device, 2
...Dropout detector, 3.17.19...Counter circuit, 4...Timer, 5...Display device, 6.2
0...integrator? , 9. 12. 14. 16
．． 21... Comparator, 8.13... Envelope detector, 10°15... Pulse width detector, 11... Level detector, 18... Code error detection circuit.

Claims (5)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）　　読取信号における異常を検出して汚れ検出信
号を発生する汚れ検出手段と、前記汚れ検出信号を保持
する保持手段と、前記保持手段の出力に応じて汚れを検
出したことを表示する汚れ表示手段とからなる情報読取
装置における汚れ検出表示装置。(1) A dirt detection means that detects an abnormality in the read signal and generates a dirt detection signal, a holding means that holds the dirt detection signal, and a dirt that indicates that dirt has been detected according to the output of the holding means. A dirt detection display device in an information reading device comprising a display means. （２）前記汚れ検出手段は、前記読取信号の欠落を検出
してドロップアウト検出信号を発生するドロップアウト
検出手段と、前記ドロップアウト検出信号の所定時間内
における発生回数に応じて前記汚れ検出信号を発生する
第１信号発生手段とからなることを特徴とする実用新案
登録請求の範囲第１項記載の情報読取装置における汚れ
検出表示装置。(2) The dirt detection means includes dropout detection means that detects a dropout in the read signal and generates a dropout detection signal; A dirt detection and display device for an information reading device according to claim 1, characterized in that the device comprises a first signal generating means for generating a signal. （３）前記汚れ検出手段は、前記読取信号の振幅に応じ
た信号を発生する手段と、前記振幅に応じた信号の瞬時
レベルに応じて前記汚れ検出信号を発生する第２信号発
生手段とからなることを特徴とする実用新案登録請求の
範囲第１項記載の情報読取装置における汚れ検出表示装
置。(3) The dirt detection means includes a means for generating a signal according to the amplitude of the read signal, and a second signal generation means for generating the dirt detection signal according to the instantaneous level of the signal according to the amplitude. A dirt detection and display device in an information reading device according to claim 1 of the utility model registration claim. （４）前記汚れ検出手段は、前記読取信号を得るための
ピックアップ手段の記録媒体に対する読取り位置の偏倚
を示すエラー信号のレベル変化に応じた信号を発生する
手段と、前記レベル変化に応じた信号によって前記汚れ
検出信号を発生する第３信号発生手段とからなることを
特徴とする実用新案登録請求の範囲第１項記載の情報読
取装置における汚れ検出表示装置。(4) The dirt detection means includes means for generating a signal corresponding to a level change of an error signal indicating a deviation of the reading position of the pickup means for obtaining the read signal with respect to the recording medium, and a signal corresponding to the level change. 2. A dirt detection and display device for an information reading device according to claim 1, further comprising a third signal generating means for generating the dirt detection signal. （５）前記汚れ検出手段は、前記読取信号に含まれ　　
　。 る符号化されたデータの符号誤りを検出して工′　ラー
検出信号を発生する符号誤り検出手段と、前記エラー検
出信号の所定時間内における発生回数に応じて前記汚れ
検出信号を発生する第４信号発生手疫とからなることを
特徴とする実用新案登録請求の範囲第１８項記載の情報
読取装置における汚れ検出表示装置。(5) The dirt detection means detects dirt contained in the read signal.
. code error detection means for detecting a code error in the encoded data and generating an error detection signal; and a fourth code error detection means for generating the dirt detection signal according to the number of occurrences of the error detection signal within a predetermined time. 19. A dirt detection and display device for an information reading device according to claim 18, which is a utility model registration device, characterized in that the device comprises a signal generating hand sanitizer.
JP1983037275U 1983-03-15 1983-03-15 Optical information reader with dirt detection display function Expired - Lifetime JPH0643901Y2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1983037275U JPH0643901Y2 (en) 1983-03-15 1983-03-15 Optical information reader with dirt detection display function
DE19843409557 DE3409557A1 (en) 1983-03-15 1984-03-15 SYSTEM FOR DETECTING AND DISPLAYING IMPURITIES FOR A SYSTEM FOR READING INFORMATION
GB08406780A GB2137799B (en) 1983-03-15 1984-03-15 Dirt detection and display system for an information read-out system
FR8404009A FR2547097A1 (en) 1983-03-15 1984-03-15 DEVICE FOR DETECTING AND SIGNALING THE PRESENCE OF DUST IN AN INFORMATION EXTRACTION SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983037275U JPH0643901Y2 (en) 1983-03-15 1983-03-15 Optical information reader with dirt detection display function

Publications (2)

Publication Number Publication Date
JPS59142989U true JPS59142989U (en) 1984-09-25
JPH0643901Y2 JPH0643901Y2 (en) 1994-11-14

Family

ID=12493133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983037275U Expired - Lifetime JPH0643901Y2 (en) 1983-03-15 1983-03-15 Optical information reader with dirt detection display function

Country Status (4)

Country Link
JP (1) JPH0643901Y2 (en)
DE (1) DE3409557A1 (en)
FR (1) FR2547097A1 (en)
GB (1) GB2137799B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182333A (en) * 1984-09-28 1986-04-25 Toshiba Corp Drop-out controller of optical recording and reproducing device
JPS6371930A (en) * 1986-09-16 1988-04-01 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device
JP2009170019A (en) * 2008-01-15 2009-07-30 Taiyo Yuden Co Ltd Surface evaluating method for optical disk and optical disk recording and playback device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0746435B2 (en) * 1985-03-14 1995-05-17 オリンパス光学工業株式会社 Abnormality discriminating apparatus for optical pickup in optical information recording / reproducing apparatus
JP3210680B2 (en) * 1990-12-18 2001-09-17 パイオニア株式会社 Information playback device
EP0671742B1 (en) * 1991-06-07 2000-01-12 Deutsche Thomson-Brandt Gmbh Signalization of types of defects of an optical information carrier
US5485444A (en) * 1991-06-07 1996-01-16 Deustsche Thomson-Brandt Gmbh Signalization of types of defects of an optical information carrier

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320201A (en) * 1976-08-09 1978-02-24 Caterpillar Tractor Co Automotive wheel having radially movable impact absorbing rim

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413318A1 (en) * 1974-03-20 1975-10-02 Agfa Gevaert Ag Marking drop-outs in flexible magnetic tapes - by recording electronic marks in separate track as drop-outs are registered
DE2611539C3 (en) * 1976-03-18 1982-09-09 Agfa-Gevaert Ag, 5090 Leverkusen Method for recognizing and locating defects extending in the longitudinal direction of a moving material web
JPS54156610A (en) * 1978-05-31 1979-12-10 Tdk Corp Inspecting method of magnetic recording tapes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320201A (en) * 1976-08-09 1978-02-24 Caterpillar Tractor Co Automotive wheel having radially movable impact absorbing rim

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6182333A (en) * 1984-09-28 1986-04-25 Toshiba Corp Drop-out controller of optical recording and reproducing device
JPS6371930A (en) * 1986-09-16 1988-04-01 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device
JP2009170019A (en) * 2008-01-15 2009-07-30 Taiyo Yuden Co Ltd Surface evaluating method for optical disk and optical disk recording and playback device

Also Published As

Publication number Publication date
JPH0643901Y2 (en) 1994-11-14
GB2137799B (en) 1986-07-02
DE3409557A1 (en) 1984-09-20
GB2137799A (en) 1984-10-10
GB8406780D0 (en) 1984-04-18
FR2547097A1 (en) 1984-12-07

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