JPS5536881A - Sound overlap device for sound cine camera - Google Patents

Sound overlap device for sound cine camera

Info

Publication number
JPS5536881A
JPS5536881A JP11106578A JP11106578A JPS5536881A JP S5536881 A JPS5536881 A JP S5536881A JP 11106578 A JP11106578 A JP 11106578A JP 11106578 A JP11106578 A JP 11106578A JP S5536881 A JPS5536881 A JP S5536881A
Authority
JP
Japan
Prior art keywords
sound
fade
overlap
counted
transistor
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
Application number
JP11106578A
Other languages
Japanese (ja)
Inventor
Yutaka Kotani
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP11106578A priority Critical patent/JPS5536881A/en
Priority to US06/071,587 priority patent/US4311369A/en
Publication of JPS5536881A publication Critical patent/JPS5536881A/en
Pending legal-status Critical Current

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  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE: To prevent interruption of overlap sound, by deviating the start of sound fade-out with respect to the starting point of overlap by means of a timer circuit.
CONSTITUTION: Upon start of overlap shooting, a switch 419 is closed, and FF 420 is set. As a result, a gate circuit 421 is opened, and frame feeding pulses are counted by a counter 422 which forms a timer circuit. When the specified number is counted, FF 423 is set. Due to this set output, a transistor 427 becomes OFF, and a capacitor 434 is rapidly charged. This potential is applied to the base of transistor 410, of which impedance then drops, and the sound signal level to be applied to a head 415 is reduced, and the sound fades out upon lapse of specified time after start of overlap. Therefore, erasure of recorded fade-out sound due to high frequency bias in the vicinity of fade-in starting point is decreased, so that the fade-in sound and fade-out sound are sufficiently overlapped with each other. Thus, occurrence of interruption of sound may be prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP11106578A 1978-09-08 1978-09-08 Sound overlap device for sound cine camera Pending JPS5536881A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11106578A JPS5536881A (en) 1978-09-08 1978-09-08 Sound overlap device for sound cine camera
US06/071,587 US4311369A (en) 1978-09-08 1979-08-31 Sound motion picture camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11106578A JPS5536881A (en) 1978-09-08 1978-09-08 Sound overlap device for sound cine camera

Publications (1)

Publication Number Publication Date
JPS5536881A true JPS5536881A (en) 1980-03-14

Family

ID=14551499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11106578A Pending JPS5536881A (en) 1978-09-08 1978-09-08 Sound overlap device for sound cine camera

Country Status (1)

Country Link
JP (1) JPS5536881A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57178901U (en) * 1981-05-11 1982-11-12
JPS5942402U (en) * 1982-09-13 1984-03-19 三井造船株式会社 exhaust gas economizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5360227A (en) * 1976-11-11 1978-05-30 Chinon Ind Inc Overlap recorder for sound cine camera

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5360227A (en) * 1976-11-11 1978-05-30 Chinon Ind Inc Overlap recorder for sound cine camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57178901U (en) * 1981-05-11 1982-11-12
JPH025203Y2 (en) * 1981-05-11 1990-02-08
JPS5942402U (en) * 1982-09-13 1984-03-19 三井造船株式会社 exhaust gas economizer

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