JPS56134335A - Time mode detection equipment - Google Patents

Time mode detection equipment

Info

Publication number
JPS56134335A
JPS56134335A JP3667680A JP3667680A JPS56134335A JP S56134335 A JPS56134335 A JP S56134335A JP 3667680 A JP3667680 A JP 3667680A JP 3667680 A JP3667680 A JP 3667680A JP S56134335 A JPS56134335 A JP S56134335A
Authority
JP
Japan
Prior art keywords
output
signal
time mode
becomes
frequency generator
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
JP3667680A
Other languages
Japanese (ja)
Other versions
JPS6325419B2 (en
Inventor
Koichi Ikata
Masaaki Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3667680A priority Critical patent/JPS56134335A/en
Priority to US06/208,476 priority patent/US4394701A/en
Priority to EP80304212A priority patent/EP0030113B1/en
Priority to DE8080304212T priority patent/DE3070130D1/en
Publication of JPS56134335A publication Critical patent/JPS56134335A/en
Publication of JPS6325419B2 publication Critical patent/JPS6325419B2/ja
Granted legal-status Critical Current

Links

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
    • G11B27/34—Indicating arrangements 

Abstract

PURPOSE:To automatically detect a recording time mode exactly and also swiftly, by counting an output signal of a frequency generator for detecting the rotational frequency of a capstan motor. CONSTITUTION:A reproduction time mode is switched automatically by counting the number of pulses of an output signal of a frequency generator for detecting the rotational frequency of a capstan motor which is proportional to a traveling distance of a magnetic tape, at an interval of one control. For instance, in case of a standard time S.P mode, since the output signal of the frequency generator 6 consists of 72 pulses at a control signal interval, the output of the NAND gate 15 becomes a waveform of U. In this case, the output of the NAND gate 15 is H. A signal of U which has been obtained to the output of the gate 15 becomes a set signal to the RS-FF31, and becomes a reset signal to the RS-FF30, therefore the output of the FF31 and the output of the FF30 become H and L, respectively, and the S.P mode detection lamp 28 is lighted. According to such a constitution, it is possible to automatically detect a time mode exactly and swiftly.
JP3667680A 1979-11-24 1980-03-21 Time mode detection equipment Granted JPS56134335A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP3667680A JPS56134335A (en) 1980-03-21 1980-03-21 Time mode detection equipment
US06/208,476 US4394701A (en) 1979-11-24 1980-11-19 Recording time mode detector
EP80304212A EP0030113B1 (en) 1979-11-24 1980-11-24 Recording-time mode detector and video tape recorder or reproducer including such a detector
DE8080304212T DE3070130D1 (en) 1979-11-24 1980-11-24 Recording-time mode detector and video tape recorder or reproducer including such a detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3667680A JPS56134335A (en) 1980-03-21 1980-03-21 Time mode detection equipment

Publications (2)

Publication Number Publication Date
JPS56134335A true JPS56134335A (en) 1981-10-21
JPS6325419B2 JPS6325419B2 (en) 1988-05-25

Family

ID=12476450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3667680A Granted JPS56134335A (en) 1979-11-24 1980-03-21 Time mode detection equipment

Country Status (1)

Country Link
JP (1) JPS56134335A (en)

Also Published As

Publication number Publication date
JPS6325419B2 (en) 1988-05-25

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