CN1032256A - 录音磁带检索仪 - Google Patents

录音磁带检索仪 Download PDF

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Publication number
CN1032256A
CN1032256A CN 87106545 CN87106545A CN1032256A CN 1032256 A CN1032256 A CN 1032256A CN 87106545 CN87106545 CN 87106545 CN 87106545 A CN87106545 A CN 87106545A CN 1032256 A CN1032256 A CN 1032256A
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China
Prior art keywords
retrieval
tape
present
audio
track engraving
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CN 87106545
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CN1012542B (zh
Inventor
魏立君
魏中
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SCIENCE AND TECHNOLOGY INST HEBEI PUBLIC SECURITY OFFICE
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SCIENCE AND TECHNOLOGY INST HEBEI PUBLIC SECURITY OFFICE
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Priority to CN 87106545 priority Critical patent/CN1012542B/zh
Publication of CN1032256A publication Critical patent/CN1032256A/zh
Publication of CN1012542B publication Critical patent/CN1012542B/zh
Expired legal-status Critical Current

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  • Management Or Editing Of Information On Record Carriers (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

本发明是一种对录音磁带进行自动检索的控制 仪器。这种磁带检索仪全部采用新型中小规模数字 集成电路,电路设计具有创造性、新颖性,整机结构布 局合理,与目前不少高中档录音机的电脑选曲(即检 索)装置有以下优点:不需在磁带上留取节目间隙及 进行任何信号处理;检索内容不受数量限制;具有选 复听功能;检索时间短,迅速准确。本发明主要解决 了录音磁带的后期加工编辑存档及检索,适用于公 安、新闻、广播、文教等录音磁带的检索。

Description

本发明与电子轻触式录音机配接使用,用于录音磁带的档案存档和检索。
为了快速寻找磁带上所需的放音内容,目前不少中高档录音机采用在快进或快倒带状况下根据放音节目之间的间隙来确定节目的起始端,所使用的磁带是由录制厂加工处理的,一般称原声带,这种录音带在节目之间留有噪声磁平很低的间隙,一般要有3-5秒。由于与节目部分的录音磁带平差很大,因此可以在快进或快倒带过程中用放音放大和检测电路找出磁带上相邻节目之间的空带间隙,达到检索目的。但是如果录音磁带是有一定噪声的现场录音,这种检索方法将无能为力了。由于节目带上要留取空带间隙,那么对于连续节目内容的某一段则无法检出,节目数量也受到了限制(一般为10段左右)。
为了解决上述问题,本发明脱离了现有的电脑选曲形式,构成了一种新的独立的检索控制系统,因为这种仪器是通过录音机的霍尔检测元件所发出的脉冲①(见说明书附图1)送入可逆计数器并将计数器输出的信号②与键盘属入后的锁存信号③进行比较,比较结果④送至检索控制部分⑤,达到对录音机进行控制的目的,由此:节目的选择只与键输入的数码及磁带转动圈数有关,对磁带不需要作任何处理,从而简便了存档和解决检索方法,扩大了检索内容,对于各种磁带的通用性较强。
本发明的实施见附图2,图2(a)是录音磁带检索仪与录音机配接实物图,图2(b)是录音磁带检索仪主机。
一、具体功能实施:
①、启动键:按下此键录音机倒带至零;
②、数字键盘:包括0-9各数字键,用于输入检索数码;
③、功能键:包I键(检索)、C键(清零)、S键(停机)、E键(编辑);
④、计数锁存键:按下此键,锁存计数器显示的数字;
⑤、数字键输入显示;
⑥、计数器显示;
⑦、指示灯:I检索指示、P电源指示、E编辑指示;
⑧、编辑、检索转换开关。
二、编辑过程:
将一⑧掷于E位置,按下启动键,将磁带倒至零。按一③C键,使计数器清零后,按一③E键录音机进入编辑状态,当听到预选内容时,记下计数器显示的数据,便可作为下次检索的数码,另外,录音时的编辑方法与上述过程相同。
三、检索过程:
将一⑧置于I,打开电源开关后按下1,将磁带倒到头,键入预选数据后,按下I键进入检索状态,选听内容听过后,如再按下I键则重放原内容。

Claims (3)

1、录音磁带检索仪,其特征是有一个0-9键盘编码器(1),与(1)相连接的是一个四位数字键锁存(2),有一个四位数BCD码可逆计数器(4),四位数字比较器(3)将与(4)的输出信号进行比较,比较结果送至模拟开关接口(5)对录音机进行控制,(2)和(4)的输出信号可由(6)显示出来。
2、权力要求1中的模拟开关接口(5)可对各种型号的电子轻触式录音机配接。
3、权力要求2中的配接方式也适用于各种型号录像机。
CN 87106545 1987-09-23 1987-09-23 录音磁带检索仪 Expired CN1012542B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 87106545 CN1012542B (zh) 1987-09-23 1987-09-23 录音磁带检索仪

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 87106545 CN1012542B (zh) 1987-09-23 1987-09-23 录音磁带检索仪

Publications (2)

Publication Number Publication Date
CN1032256A true CN1032256A (zh) 1989-04-05
CN1012542B CN1012542B (zh) 1991-05-01

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CN 87106545 Expired CN1012542B (zh) 1987-09-23 1987-09-23 录音磁带检索仪

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CN (1) CN1012542B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1037719C (zh) * 1993-04-17 1998-03-11 三星电子株式会社 利用慢进拨盘完成的盘的时间搜索方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1037719C (zh) * 1993-04-17 1998-03-11 三星电子株式会社 利用慢进拨盘完成的盘的时间搜索方法

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CN1012542B (zh) 1991-05-01

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