GB2449256A - Device for digitizing, recording and playing audio signals of a record - Google Patents

Device for digitizing, recording and playing audio signals of a record Download PDF

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Publication number
GB2449256A
GB2449256A GB0709264A GB0709264A GB2449256A GB 2449256 A GB2449256 A GB 2449256A GB 0709264 A GB0709264 A GB 0709264A GB 0709264 A GB0709264 A GB 0709264A GB 2449256 A GB2449256 A GB 2449256A
Authority
GB
United Kingdom
Prior art keywords
digital
audio signals
audio signal
signal processor
record
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.)
Withdrawn
Application number
GB0709264A
Other versions
GB0709264D0 (en
Inventor
Chin-Chen Ho
Shen-Chi Liu
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.)
Hanpin Electron Co Ltd
Original Assignee
Hanpin Electron Co Ltd
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 Hanpin Electron Co Ltd filed Critical Hanpin Electron Co Ltd
Priority to GB0709264A priority Critical patent/GB2449256A/en
Publication of GB0709264D0 publication Critical patent/GB0709264D0/en
Publication of GB2449256A publication Critical patent/GB2449256A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/64—Re-recording, i.e. transcribing information from one grooved record carrier on to one or more similar or dissimilar record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B2020/10833—Copying or moving data from one record carrier to another
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

A device includes a turntable 1, a pickup 3 , and a digital audio signal processor 4 with a built-in compression/uncompression chip. The pickup reads analogous audio signals of a vinyl record which are converted into digital ones by means of an analog-to-digital converter and are next sent to the digital audio signal processor. The audio signals are compressed by means of the built-in chip of the digital audio signal processor and stored in a large-capacity storage medium 41. Afterwards, the digital audio signals are uncompressed by means of the chip, and converted into analogous ones by means of a digital-to-analogue converter 43, which are next sent out through a low-pass wave filter 44. The large capacity storage medium can be a USB hard disk or a memory card.

Description

DEVICE FOR DIGITALIZING RECORDING AND PLAYING AUDIO
SIGNALS OF A RECORD
BACKGROUND OF THE iNVENTION
1. Field of the invention
The present invention relates to a device for digitalizing, recording and playing audio signals of a record, more particularly one, which when playing a vinyl record, can convert analogous audio signals of the record into digital ones, and store the digital audio signals in a large-capacity storage medium in order to send out the audio signals afterwards.
2. Brief Description of the Prior Art
In order to help increase hot and exciting atmosphere in a concert or a party such as is held in a PUB or a dancing hail, the DJ usually makes the music sent out with scratch sound effects by means of manually moving a conventional vinyl record positioned on the turntable at changing speeds and in alternate directions. As soon as the DJ stops moving the vinyl record with his hands, the record player will resume playing the record in the normal way. However, a single vinyl record has very limited capacity to store music in, and a DJ has to prepare a lot of vinyl records in every event, and the records are likely to cause the DJ inconvenience due to the large size and heavy weight. Moreover, conventional vinyl records are prone to be damaged when they are manually moved on the turntable. Currently, CD/MP3 records are gradually taking the place of conventional vinyl records because they have larger capacity for storing music, and are smaller in size and more convenient to use than vinyl records. Therefore, various more advanced audio signal players are developed for playing CD/MP3 records, which can be easily operated by DJ.
Such CD/MP3 audio signal players are easier to operate and use.
However, they have to read audio signals stored in CD/MP3 records with laser heads, whose average service life is between one and two thousand hours, not long enough. Consequently, there will be frequent change of ]aser heads, and the expenditure of money to use such CD/MP3 audio signal players very high. In addition, there are still many DJ who prefer performing with conventional vinyl records, which are difficult to preserve. And, there are many amateurs of vinyl records. Therefore, it is worth developing a more convenient vinyl record player.
SUMMARY OF THE INVENTION
It is a main object of the present invention to provide an improvement on an audio signal playing device to overcome the above problems. An audio signal playing device according to an embodiment of the present invention includes a turntable, a pickup, an analog-to-digital converter, a digital-to-analog converter, and a digital audio signal processor with a built-in compressionluricompression chip; in use, as soon as the pickup reads analogous audio signals of a vinyl record, the analogous audio signals will be converted into digital ones by means of the analog-to-digital converter, which are next sent to the digital audio signal processor, and compressed by means of the chip of the digital audio signal processor, and stored in a large-capacity storage medium.
Afterwards, the digital audio signals are uncompressed by means of the chip, and converted into analogous ones by means of the digital-to-analog converter, which are next sent out through a low-pass wave filter. Thus, the audio signals from the vinyl record will be more easily preserved. In addition, the audio signal playing device will have longer service life, and will be more practical owing to the use of a large-capacity storage medium, which has relatively long service life.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be better understood by referring to the accompanying drawings, wherein: Fig. 1 is a block diagram of the structure of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Sown in Fig. 1 is a structural block diagram of a preferred embodiment of a device for digitalizing, recording and playing audio signals of a record, which includes: a turntable 1, the turntable 1 is rotated by means of a direct drive motor 12, which is controlled by means of a motor driving circuit 11; a feed-back signal of the rotational speed of the direct drive motor 12 is provided to a rotational speed detecting/speed controlling device 13 so that the rotational speed detecting/speed controlling device 13 makes the direct drive motor 12 rotate the turntable 1 at a stable speed through the motor driving circuit 11; a system microprocessor 2 connected to the rotational speed detecting/speed controlling device 13; an operate and display panel 21 is connected to the system microprocessor 2 in order for rotation of the turntable 1 to be controlled through the system microprocessor 2 by means of using the operate and display panel 21; a pickup 3 arranged on the turntable 1, a prepositioned amplifier 31 is connected to the pickup 3, and a analog-to-digital converter 32 is connected to the prepositioned amplifier 31; and a digital audio signal processor 4 connected to both the system microprocessor 2 and the analog-to-digital converter 32; the digital audio signal processor 4 has a built-in compressionluncompressjon chip; the digital audio signal processor 4 is connected to a large-capacity storage medium 41 such as an USB portable memory disk, USB hard disk, and memory card; the digital audio signal processor 4 is further connected to dynamic memories 42, and a digital-to-analog converter 43, which is connected to a low-pass wave filter 44.
in use, after a vinyl record is positioned on the turntable I, the present device is operated and set by means of using the operate and display panel 21 in order for the system microprocessor 2 to make the direct drive motor 12 rotate the turntable 1 at a stable speed through the rotational speed detecting/speed controlling device 13 and the motor driving circuit 11; thus, the pickup 3 reads analogous audio signals of the vinyl record on the turntable 1, which is next sent out through the prepositioned amplifier 31; the rotational speed of the turntable 1 will be shown on the operate and display panel 21 at the same time.
Furthermore, as soon as the pickup 3 reads analogous audio signals of the vinyl record on the turntable 1, the analogous audio signals will be converted into digital audio signals by means of the analog-to-digital converter 32. Next, the digital audio signals are sent to the digital audio signal processor 4, and compressed by means of the built-in compression/uncompression chip of the digital audio signal processor 4, and stored in the large-capacity storage medium 41 to be used in the future.
In order to send out the digital audio signals, they are first uncompressed by means of the built-in compression/uncompression chip of the digital audio signal processor 4, and temporarily stored in the dynamic memories 42. Next, the digital audio signals are converted into analogous audio signals by means of the digital-to-analog converter 43, which are sent out through the low-pass wave filter 44; at the same time, information about the audio signals will be shown on the operate and display panel 21 for the operator.
From the above description, it can be seen that the audio signal playing device of the present invention has an advantage over the prior art: As soon as the pickup reads analogous audio signals of the vinyl record on the turntable, the analogous audio signals will be converted into digital audio signals by means of the analog-to-digital converter, which are next sent to the digital audio signal processor, and compressed by means of the compressionluncompression chip of the digital audio signal processor, and stored in the large-capacity storage medium; afterwards, the digital audio signals can be uncompressed with the compression/uricompression chip, and converted into analogous audio signals by means of the digital-to-analog converter, which will be sent out through the low-pass wave filter; thus, the audio signals from the vinyl record will be more easily preserved. In addition, the audio signal playing device will have longer service life, and will be more practical owing to the use of the large-capacity storage medium, which has relatively long service life.

Claims (4)

  1. WHAT IS CLAIMED IS: 1. A device for digitalizing, recording and playing
    audio signals of a record, comprising a turntable for a record, an analog-to-digital converter connected to a pickup on the turntable, and a digital audio signal processor connected to the analog-to-digital converter, the digital audio signal processor having a built-in compressionluncompressjon chip; the digital audio signal processor being connected to a large-capacity storage medium; the digital audio signal processor being connected to a plurality of dynamic memories; the digital audio signal processor being connected to a digital-to-analog converter, which is connected to a low-pass wave filter.
  2. 2. The device for digitalizing, recording and playing audio signals of a record, as recited in claim 1, wherein the large-capacity storage medium is an USB portable memory disk.
  3. 3. The device for digitalizing, recording and playing audio signals of a record, as recited in claim 1, wherein the large-capacity storage medium is an USB hard disk
  4. 4. The device for digitalizing, recording and playing audio signals of a record, as recited in claim 1, wherein the large-capacity storage medium is a memory card.
GB0709264A 2007-05-15 2007-05-15 Device for digitizing, recording and playing audio signals of a record Withdrawn GB2449256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0709264A GB2449256A (en) 2007-05-15 2007-05-15 Device for digitizing, recording and playing audio signals of a record

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0709264A GB2449256A (en) 2007-05-15 2007-05-15 Device for digitizing, recording and playing audio signals of a record

Publications (2)

Publication Number Publication Date
GB0709264D0 GB0709264D0 (en) 2007-06-20
GB2449256A true GB2449256A (en) 2008-11-19

Family

ID=38219391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0709264A Withdrawn GB2449256A (en) 2007-05-15 2007-05-15 Device for digitizing, recording and playing audio signals of a record

Country Status (1)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994019801A1 (en) * 1993-02-18 1994-09-01 Sony Corporation Apparatus, method, and system for compressing a digital input signal in more than one compression mode
US5355302A (en) * 1990-06-15 1994-10-11 Arachnid, Inc. System for managing a plurality of computer jukeboxes
EP1087398A1 (en) * 1999-09-21 2001-03-28 Sony Corporation Communication system and its method and communication apparatus and its method
US20020027838A1 (en) * 2000-09-01 2002-03-07 Teac Corporation User recording of music or the like at addressable locations on a CD-R or the like
US6560577B1 (en) * 2000-03-21 2003-05-06 Intel Corporation Process for encoding audio from an analog medium into a compressed digital format using attribute information and silence detection
US20050169121A1 (en) * 1997-07-09 2005-08-04 Keller Peter J. Optical storage device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355302A (en) * 1990-06-15 1994-10-11 Arachnid, Inc. System for managing a plurality of computer jukeboxes
WO1994019801A1 (en) * 1993-02-18 1994-09-01 Sony Corporation Apparatus, method, and system for compressing a digital input signal in more than one compression mode
US20050169121A1 (en) * 1997-07-09 2005-08-04 Keller Peter J. Optical storage device
EP1087398A1 (en) * 1999-09-21 2001-03-28 Sony Corporation Communication system and its method and communication apparatus and its method
US6560577B1 (en) * 2000-03-21 2003-05-06 Intel Corporation Process for encoding audio from an analog medium into a compressed digital format using attribute information and silence detection
US20020027838A1 (en) * 2000-09-01 2002-03-07 Teac Corporation User recording of music or the like at addressable locations on a CD-R or the like

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Polderbits Software, "Easy LP recorder Software", online, 08 Jan 2006, Available from: http://web.archive.org/web/20060108194011/http://www.polderbits.com/lp-to-cd.html, accessed 13 Sept 2007 *

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Publication number Publication date
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