Apparatus for controlling a digital source

• US 8,198,524 B2
• Filed: 07/22/2009
• Issued: 06/12/2012
• Est. Priority Date: 02/29/2000
• Status: Expired due to Term

• Current Assignee: Native Instruments GmbH (Soundwide GmbH)
• Original Assignee: N2IT Holding BV
• Inventors: Bastian, Mark-Jan, Hemel, Tim
• Primary Examiner(s): Warren, David S.
• Application Number:
  US12/507,242
• Publication Number:
  US 20090277323A1
• Time in Patent Office: 1,056 Days
• Field of Search: 84600-602, 369/9, 369/69, 369/70
• US Class Current: 84/601
• CPC Class Codes: G10H 1/0091 Means for obtaining special acoustic effects combined with modulation G10H1/043
• CPC Class Codes: G10H 2210/241 Scratch effects, i.e. emulating playback velocity or pitch manipulation effects normally obtained by a disc-jockey manually rotating a LP record forward and backward
• CPC Class Codes: G10H 2250/631 Waveform resampling, i.e. sample rate conversion or sample depth conversion waveform decimation G10H2250/611
• CPC Class Codes: G10H 3/03 using pick-up means for reading recorded waves, e.g. on rotating discs drums, tapes or wires
• CPC Class Codes: G11B 19/02 Control of operating function, e.g. switching from recording to reproducing
• CPC Class Codes: G11B 19/28 Speed controlling, regulating, or indicating G11B19/24 takes precedence
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 27/005 Reproducing at a different information rate from the information rate of recording for television signals H04N5/783
• CPC Class Codes: G11B 27/3036 Time code signal

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.

Claims

1. An apparatus for controlling a digital audio source, comprising:

a turntable;

a disc comprising a time-code signal, wherein the disc is placed on the turntable;

a pick-up element deriving a time-code signal from the disc on the turntable;

a carrier frequency in the audible range of 20 to 20,000 Hz for modulating the time-code signal from the pick-up element;

a filter for demodulating the time-code signal; and

a time-code receiver for receiving the demodulated time-code signal to be used to control a digital audio source.

2. The apparatus according to claim 1, including a digital audio source controlled by the demodulated time-code signal.

3. The apparatus according to claim 2, wherein the digital audio source comprises a CD player, a DVD player, or an MP3 device.

4. The apparatus according to claim 1, wherein the speed of the play of a digital audio source is controlled by the apparatus.

5. The apparatus according to claim 1, wherein the direction of the play of a digital audio source is controlled by the apparatus.

6. The apparatus according to claim 1, wherein the modulated time-code signal comprises a right channel and a left channel.

7. The apparatus according to claim 6, wherein the direction of the play of a digital audio source is controlled by detecting a phase difference between the right channel and the left channel.

8. A system for playback of music from a digital audio source, said system comprising:

(i) a disc including an analog control signal indicative of velocity of disc play, directionality of disc play and place on the disc of play, said signal comprising information sufficient to determine velocity and directionality of disc play, and including a carrier frequency modulated with an absolute time code indicative of position of play on the disc;

(ii) an analog/digital converter for converting the analog signal; and

(iii) a processor of the converted signal for determining an accurate time-code signal serving to control, without noticeable delay, music play from the digital audio source at a speed, direction and position corresponding to that of disc play, wherein the processing to determine an accurate time-code signal comprises demodulating the absolute time code signal, determining a relative time code indicating directionality of disc movement, and subjecting the signal to time-code correction.