Patent US3878472A successfully refreshed from Google Patents.
US3878472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio signal transmitting system
Assignee: Sony Corp
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Filing: 1973-12-03
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Granted: 1975-04-15
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Expires: 1993-12-03
Abstract
Abstract In an audio signal transmitting system having an audio signal transferring device and a loudspeaker to reproduce audio signals, the system includes a vibrato device consisting of a charge transfer device (CTD) connected to the transferring device, a clock pulse oscillator to produce clock pulses and supply the clock pulses to the CTD, and an oscillator to supply low frequency signals. The clock pulse oscillator is controlled in its frequency in response to the low frequency signals, so that delayed and frequency-modulated audio signals are reproduced by the loudspeaker.
Inventors
- 👤 Yoshio Osakabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:00
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/04; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043; H; H03; H03F; H03F3/00; H03F3/68; H04; H04S; H04S1/00; H04S1/002; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45141; G05B2219/50; G05B2219/50213; G10H2210/00; G10H2210/155; G10H2210/195; G10H2210/201; G10H2250/00; G10H2250/041; Y; Y10; Y10S; Y10S84/00; Y10S84/26; Y10S84/27
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
130 words
An audio signal transmitting system comprising: a. means for transferring audio signals; b. means connected to an output stage of said transferring means for reproducing said audio signals; and c. means connected to said transferring means and supplied with clock pulses for delaying and frequency modulating said audio signals in response to the frequency of said clock pulses thereby to cause vibrato in the reproduced audio signals, a clock pulse oscillator for supplying said clock pulses, a low frequency oscillator for applying a low frequency signal to said clock pulse oscillator, and a detector for detecting an audio signal in said transferring means, the output signal from said detector being used to vary the level of said low frequency signal and hence to control the oscillation of said clock pulses.
Claim 2
Dependent Claim
130 words
An audio signal transmitting system comprising: a. means for transferring audio signals; b. means connected to an output stage of said transferring means for reproducing said audio signals; and c. means connected to said transferring means and supplied with clock pulses for delaying and frequency modulating said audio signals in response to the frequency of said clock pulses thereby to cause vibrato in the reproduced audio signals, a clock pulse oscillator for supplying said clock pulses, a low frequency oscillator for applying a low frequency signal to said clock pulse oscillator, and a detector for detecting an audio signal in said transferring means, the output signal from said detector being used to vary the level of said low frequency signal and hence to control the oscillation of said clock pulses.
Claim 3
Dependent Claim
26 words
An audio signal transmitting system according to claim 1, which further incluDes a time constant circuit which is connected to the output stage of said detector.
Claim 4
Dependent Claim
171 words
An audio transmitting system comprising, a first source of audio signals, a vibrato device receiving the output of said source of audio signals, said vibrato device comprising a variable time delay device having an input terminal receiving said audio signals, an output terminal, and at least one time delay control terminal, a pulse oscillator connected to said time delay control terminal to vary the time delay of said variable time delay device, a low frequency oscillator connected to said pulse oscillator to vary the pulse frequency thereof, a second audio frequency source having left and right stereo components, a first mixer receiving one of said left and right stereo components of said second audio source and said first source of audio signals, a first audio producing means connected to said first mixer, a second mixer receiving the other one of said left and right stereo components of said second audio source and the output of said variable time delay device, and a second audio reproducing means connected to said second mixer.
Claim 5
Dependent Claim
171 words
An audio transmitting system comprising, a first source of audio signals, a vibrato device receiving the output of said source of audio signals, said vibrato device comprising a variable time delay device having an input terminal receiving said audio signals, an output terminal, and at least one time delay control terminal, a pulse oscillator connected to said time delay control terminal to vary the time delay of said variable time delay device, a low frequency oscillator connected to said pulse oscillator to vary the pulse frequency thereof, a second audio frequency source having left and right stereo components, a first mixer receiving one of said left and right stereo components of said second audio source and said first source of audio signals, a first audio producing means connected to said first mixer, a second mixer receiving the other one of said left and right stereo components of said second audio source and the output of said variable time delay device, and a second audio reproducing means connected to said second mixer.
Claim 6
Dependent Claim
32 words
An audio transmitting system according to claim 3 including a low pass filter in said vibrato device connected between and said mixer and the output terminal of said variable time delay device.
Claim 7
Dependent Claim
32 words
An audio transmitting system according to claim 3 including an matrix connected between said first and second mixers and receiving said left and right stereo components so as to vary their phases.
Claim 8
Dependent Claim
172 words
An audio transmitting system comprising, a first source of audio signals, a vibrato device receiving the output of said source of audio signals, said vibrato device comprising a variable time delay device having an input terminal receiving said audio signals, an output terminal, and at least one time delay control terminal, a pulse oscillator connected to said time control terminal to vary the time delay of said variable time delay device, a low frequency oscillator connected to said pulse oscillator to vary the pulse frequency thereof, a second audio frequency source having left and right stereo components, a first mixer receiving one of said left and right stereo components of said second audio source and the output of said variable time delay device, a first audio reproducing means connected to said first mixer, a second mixer receiving the other one of said left and right stereo components of said second audio source and the output of said variable time delay device, and a second audio reproducing means connected to said second mixer.
Claim 9
Dependent Claim
172 words
An audio transmitting system comprising, a first source of audio signals, a vibrato device receiving the output of said source of audio signals, said vibrato device comprising a variable time delay device having an input terminal receiving said audio signals, an output terminal, and at least one time delay control terminal, a pulse oscillator connected to said time control terminal to vary the time delay of said variable time delay device, a low frequency oscillator connected to said pulse oscillator to vary the pulse frequency thereof, a second audio frequency source having left and right stereo components, a first mixer receiving one of said left and right stereo components of said second audio source and the output of said variable time delay device, a first audio reproducing means connected to said first mixer, a second mixer receiving the other one of said left and right stereo components of said second audio source and the output of said variable time delay device, and a second audio reproducing means connected to said second mixer.
Claim 10
Dependent Claim
238 words
An audio transmitting system comprising, a source of left and right stereo component signals, a matrix receiving said left and right stereo component signals and producing three output signals with one being a sum of the left and right stereo component signals, another being a phase shifted left stereo component signal and the third being a phase shifted right stereo component signal, a first mixer receiving said sum of the left and right stereo component signals and the phase shifted left stereo component signal from said matrix, a second mixer receiving said sum of the left and right stereo component signals and the phase shifted right stereo component signal from said matrix, a vibrato device receiving said sum of the left and right stereo component signals from said matrix, said vibrato device comprising a variable time delay device having an input terminal receiving said sum of the left and right stereo component signals, an output terminal and at least one time delay control terminal, a pulse oscillator connected to said time delay control terminal to vary the time delay of said variable time delay device, a low frequency oscillator connected to said pulse oscillator to vary the pulse frequency thereof, the output terminal of said variable time delay device supplying inputs to said first and second mixers, a first audio reproducing means connected to said first mixer, and a second audio reproducing means connected to Said second mixer.
Claim 11
Dependent Claim
238 words
An audio transmitting system comprising, a source of left and right stereo component signals, a matrix receiving said left and right stereo component signals and producing three output signals with one being a sum of the left and right stereo component signals, another being a phase shifted left stereo component signal and the third being a phase shifted right stereo component signal, a first mixer receiving said sum of the left and right stereo component signals and the phase shifted left stereo component signal from said matrix, a second mixer receiving said sum of the left and right stereo component signals and the phase shifted right stereo component signal from said matrix, a vibrato device receiving said sum of the left and right stereo component signals from said matrix, said vibrato device comprising a variable time delay device having an input terminal receiving said sum of the left and right stereo component signals, an output terminal and at least one time delay control terminal, a pulse oscillator connected to said time delay control terminal to vary the time delay of said variable time delay device, a low frequency oscillator connected to said pulse oscillator to vary the pulse frequency thereof, the output terminal of said variable time delay device supplying inputs to said first and second mixers, a first audio reproducing means connected to said first mixer, and a second audio reproducing means connected to Said second mixer.
Claim 12
Dependent Claim
92 words
A vibrato device comprising a delay unit receiving an audio signal on its input terminal, said delay unit having an output terminal and at least one time delay control terminal, a pulse oscillator connected to said time delay control terminal, a level control connected to the input of said pulse oscillator to control its frequency, a detector receiving said audio signal, a time constant circuit receiving the output of said detector and supplying an input to said level control, and a first low frequency oscillator supplying an input to said level control.
Claim 13
Dependent Claim
92 words
A vibrato device comprising a delay unit receiving an audio signal on its input terminal, said delay unit having an output terminal and at least one time delay control terminal, a pulse oscillator connected to said time delay control terminal, a level control connected to the input of said pulse oscillator to control its frequency, a detector receiving said audio signal, a time constant circuit receiving the output of said detector and supplying an input to said level control, and a first low frequency oscillator supplying an input to said level control.
Claim 14
Dependent Claim
19 words
A vibrato device according to claim 8 further including a second low frequency oscillator connected to said level control.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |