System and method for controlling audio equipment
First Claim
Patent Images
1. A system for controlling play of audio equipment, the system comprising:
- a disc including a control signal indicative of at least speed of disc play and directionality of disc play, the disc rotating on a turntable,wherein the disc includes an absolute control signal, in the audible range between 20 and 20,000 Hz;
a detection filter processing the control signal to determine a relative control signal based on a phase difference between a left channel and a right channel of the control signal,wherein the relative control signal indicates directionality of disc movement; and
a digital filter utilizing the absolute control signal and the relative control signal to determine an accurate control signal serving to control play of audio equipment.
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Abstract
An apparatus for signal processing, wherein a disc is placed on a turntable and is provided with a groove which can be followed by the pick-up element, and employing a time-code signal wherein during use of the disc the said time-code signal controls the digital audio source.
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Citations
20 Claims
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1. A system for controlling play of audio equipment, the system comprising:
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a disc including a control signal indicative of at least speed of disc play and directionality of disc play, the disc rotating on a turntable, wherein the disc includes an absolute control signal, in the audible range between 20 and 20,000 Hz; a detection filter processing the control signal to determine a relative control signal based on a phase difference between a left channel and a right channel of the control signal, wherein the relative control signal indicates directionality of disc movement; and a digital filter utilizing the absolute control signal and the relative control signal to determine an accurate control signal serving to control play of audio equipment. - View Dependent Claims (2, 3, 4, 5, 6, 12)
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7. A method for controlling play of audio equipment, the method comprising:
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rotating a disc on a player; deriving absolute control signals from the rotating disc in the audible range between 20 and 20,000 Hz; determining relative control signals based on a phase difference between a left channel and a right channel of the control signals; and utilizing the absolute control signals and the relative control signals to control at least the speed of play and the direction of play of the audio equipment.
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8. An apparatus for using control signals to determine play of audio equipment, the apparatus comprising:
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a rotational device; a disc, which when processed on the rotational device, provides signals to control play of audio equipment, wherein the disc comprises; absolute control signals indicative of the speed and the directionality of disc play on the rotational device; an analog/digital converter converting the control signals to digital control signals; a detection filter processing the converted control signals to determine relative time-code signals by detecting a phase difference between a right channel and a left channel, wherein the relative time-code signals are determinative of the direction of movement of the disc; a digital filter utilizing the absolute control signals together with the relative time-code signals to determine accurate time-code signals; and an output filter utilizing the accurate time-code signals to determine play of the audio equipment. - View Dependent Claims (9, 10, 11)
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13. A system for controlling play of audio equipment, the system comprising:
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a disc including a control signal in the audible range between 20 and 20,000 Hz indicative of at least speed of disc play and directionality of disc play, the disc rotating on a player, a detection filter processing the absolute control signal to determine a relative control signal based on a phase difference between a left channel and a right channel of the absolute control signal, wherein the relative control signal indicates directionality of disc movement; and a digital filter utilizing the absolute control signal and the relative control signal to determine an accurate control signal serving to control play of audio equipment. - View Dependent Claims (14, 15)
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16. A method for controlling play of audio equipment, the method comprising:
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rotating a disc on a player; deriving absolute control signals from the rotating disc in the audible range between 20 and 20,000 Hz; determining relative control signals based on a phase difference between a left channel and a right channel of the absolute control signals; and utilizing the absolute control signals and the relative control signals to control at least the speed of play and the direction of play of the audio equipment. - View Dependent Claims (17, 18)
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19. An apparatus for using control signals to determine play of audio equipment, the apparatus comprising:
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a rotational device; a disc, which when processed on the rotational device, provides signals to control play of audio equipment, wherein the disc comprises; absolute control signals indicative of the speed and the directionality of disc play on the rotational device; a detection filter processing the absolute control signals to determine relative control signals by detecting a phase difference between a right channel and a left channel, wherein the relative control signals are determinative of the direction of movement of the disc; a digital filter utilizing the absolute control signals together with the relative control signals to determine accurate control signals; and an output filter utilizing the accurate control signals to determine play of the audio equipment. - View Dependent Claims (20)
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Specification