EP0057086A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Editing systems for audio signals
Assignee: Sony Corp
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Filing: 1982-01-21
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Granted: —
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Expires: 2002-01-21
Abstract
Abstract An editing system for audio signals recorded on magnetic tape comprises a helical scan video tape recorder including a circuit for recording and reproducing the audio signals longitudinally on the magnetic tape, an address signal reproducing circuit for reproducing an address signal recorded on the tape, a tape transporting mechanism for moving the tape, a mode selecting circuit for selecting an operating mode of the video tape recorder, and a circuit for generating pulse signals corresponding to a moving speed of the tape; a monitor circuit for monitoring the audio signals reproduced by the video tape recorder; and an editing control circuit including a speed control circuit for controlling the tape transport mechanism to change the speed of the tape and thereby locate an editing point on the tape, an address signal reading circuit for reading the address signal supplied from the video tape recorder, a counting circuit for counting the pulse signals, a memory for storing output signals from the reading circuit and the counting circuit which are generated when the tape is positioned at the editing point, and a controller circuit for controlling the mode selecting circuit in response to the output signals stored in the memory.
Inventors
- 👤 Hajime Takeuchi
- 👤 Katsuichi Tachi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 13:12
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G11B27/322; G11B27/323; G11B15/00; G11B15/005; G11B27/002; G11B27/02; G11B27/022; G11B27/024; G11B27/029; G11B27/11; G11B27/13; G11B27/36; G11B2220/00; G11B2220/60; G11B2220/65; G11B2220/90; G11B27/30; G11B27/3027; G11B27/3036; G11B27/34
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
180 words
An editing system for audio signals, the system comprising: a helical scan video tape recorder including means (6, 7) for recording and reproducing an audio signal longitudinally on a magnetic tape (1), means (8) for reproducing an address signal from said tape (1), means (24) for moving said tape (1), means for selecting operation modes of said video tape recorder, and means (26) for generating pulse signals corresponding to a moving speed of said tape (1); means (16) for monitoring said audio signal; and editing control means including speed control means (15) for controlling said magnetic tape moving means (24) so as to change the moving speed of said tape (1) and to find an editing point, means (19) for reading said address signal supplied from said video tape recorder, a counter (27) for counting said pulse signal, memory means (22) for storing output signals from said reading means (19) and said counter (27) at said editing point, and means (18) for controlling said operation mode selecting means in response to said stored output signals in said memory means (22).
Claim 2
Dependent Claim
180 words
An editing system for audio signals, the system comprising: a helical scan video tape recorder including means (6, 7) for recording and reproducing an audio signal longitudinally on a magnetic tape (1), means (8) for reproducing an address signal from said tape (1), means (24) for moving said tape (1), means for selecting operation modes of said video tape recorder, and means (26) for generating pulse signals corresponding to a moving speed of said tape (1); means (16) for monitoring said audio signal; and editing control means including speed control means (15) for controlling said magnetic tape moving means (24) so as to change the moving speed of said tape (1) and to find an editing point, means (19) for reading said address signal supplied from said video tape recorder, a counter (27) for counting said pulse signal, memory means (22) for storing output signals from said reading means (19) and said counter (27) at said editing point, and means (18) for controlling said operation mode selecting means in response to said stored output signals in said memory means (22).
Claim 3
Dependent Claim
41 words
A system according to claim 1 wherein said editing control means includes said address signal reading means (19) and a circuit for comparing output signals produced from said counter (27) with said stored output signals derived from said memory means (22).
Claim 4
Dependent Claim
39 words
A system according to claim 1 wherein said edit control means includes a second memory means (22) for storing second output signals produced from said address signal reading means (19) and said counter (27) at a second edit point.
Claim 5
Dependent Claim
26 words
A system according to claim 3 wherein said controlling means (18) controls said operation mode selecting means in response to outputs of said second memory (22).
Claim 6
Dependent Claim
38 words
A system according to claim 1 wherein said video tape recorder includes erasing means (5) for erasing recorded audio signals and said erasing means (5) is activated by said selecting means in response to said stored output signals.
Claim 7
Dependent Claim
31 words
A system according to claim 1 wherein said address signal reproducing means (8) includes a magnetic head for reproducing the address signal recorded in the longitudinal direction on said tape (1).
Claim 8
Dependent Claim
48 words
A system according to claim 1 wherein the video tape recorder includes a reproducing rotary magnetic head (7) for reproducing the video signal, and said address signal reproducing means includes a circuit for removing the address signal from the reproduced signal reproduced by said rotary magnetic head (17).
Claim 9
Dependent Claim
39 words
A system according to claim 1 wherein said editing control means includes a manual switch (21) for supplying the output signals generated from said address signal reading means (19) and said counter (27) to said - memory means (22).
Claim 10
Dependent Claim
27 words
A system according to claim 1 wherein said editing control means includes means for making said monitoring means (16) inoperative in response to said stored output signals.
Claim 11
Dependent Claim
29 words
A system according to claim 1 wherein said editing control means includes a circuit (28) for trimming the contents of said memory means (22) by using a keyboard (29).
Claim 12
Dependent Claim
33 words
A system according to claim 1 wherein said tape moving means (24) is a capstan and said pulse signal generating means (26) is a pulse generator mounted in association with said capstan (24).
Claim 13
Dependent Claim
32 words
A system according to claim 1 wherein said pulse signal generating means (26) is rotation means to be rotated by the movement of said tape (1) and a pulse generator driven thereby.
References Cited (Backward Citations)
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