EP1057171A1 - Enregistreur audio avec mise en memoire retroactive - Google Patents

Enregistreur audio avec mise en memoire retroactive

Info

Publication number
EP1057171A1
EP1057171A1 EP98902702A EP98902702A EP1057171A1 EP 1057171 A1 EP1057171 A1 EP 1057171A1 EP 98902702 A EP98902702 A EP 98902702A EP 98902702 A EP98902702 A EP 98902702A EP 1057171 A1 EP1057171 A1 EP 1057171A1
Authority
EP
European Patent Office
Prior art keywords
memory
audio
signals
output
microphone
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Withdrawn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
EP98902702A
Other languages
German (de)
English (en)
Other versions
EP1057171A4 (fr
Inventor
Henry C. Yuen
Philip P. Yuen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority claimed from PCT/US1998/001337 external-priority patent/WO1999038154A1/fr
Publication of EP1057171A1 publication Critical patent/EP1057171A1/fr
Publication of EP1057171A4 publication Critical patent/EP1057171A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/16—Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters 
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C2207/00—Indexing scheme relating to arrangements for writing information into, or reading information out from, a digital store
    • G11C2207/16—Solid state audio

Definitions

  • This invention relates to audio recorders in general and more particularly
  • These integrated circuit recorders may record analog values representing
  • microphone output may be digitized and stored as binary values.
  • compression/decompression circuits may be employed to increase storage
  • These recorders may operate on a first-in first-out basis so that the recorder stores the most recently captured sounds and discards signals or
  • the present invention is directed towards such usages.
  • the present invention takes the form of an audio recorder including a
  • the sound responsive switch detects signals representative of speech or music
  • microphone output is provided to an audio memory on a first-in first-out, queuing 3 basis. That is, when the memory is full the oldest signals are discarded or erased
  • an operator controlled momentary contact switch which may be actuated when the operator desires that a statement just made or musical passage just
  • the audio memory preferably has a capacity for storage of a limited number of these preserved signals so that the operator may
  • the capture button which is
  • actuated by the operator when it is desired to preserve the immediately preceding sound section may be located remotely from the recorder and communicate with
  • the recorder via electromagnetic signals such as infrared.
  • the signals received from the microphone are stored under
  • the queue length is reduced by ten seconds each time a section is captured. Thus, a total of 30 ten second segments may be preserved.
  • the queue length is only ten seconds long.
  • the preferred embodiment of the invention includes a register storing the time length
  • the recorder is provided with controls which allow
  • the audio recorder may include a digital clock which generates signals
  • the digital signals may be derived from the clock portion of the
  • the operator controls further include a display assigning consecutive
  • the display also provides the
  • the queue length is constant and the signals in the queue are shifted by one memory location each time a new
  • the memory section forming the queue may be
  • the audio memory may constitute a digital tape or a multi-cell integrated circuit which stores the recorded signals in either digital or analog form. If the storage is in digital form an analog-digital converter is provided to convert the
  • decompression circuit may be used to extend the storage time for a memory of
  • Figure 1 is a perspective view of a wrist worn device incorporating the
  • Figure 2 is a schematic diagram of a preferred embodiment of the
  • invention employing an addressable digital memory to store both the signals in 6 the memory queue and the signals designated by the operator to be captured from the queue for later review and reply;
  • Figure 3 is a schematic diagram of a second embodiment of the invention in which the memory queue and the captured signals are stored in independent
  • Audio recorders formed in accordance with the present invention may be any audio recorders formed in accordance with the present invention.
  • Figure 1 illustrates a wrist unit, generally indicated at 10, incorporating a
  • the microphone output signal is provided to a sound
  • a speech or nonspeech signal is a speech or nonspeech signal.
  • controlled on/off switch 22 allows the entire system, including the sound responsive switch to be deactivated.
  • An optional operator controlled switch may be
  • responsive switch detects a speech signal (or a music signal if it is appropriately
  • the output of the microphone 16 is provided to an analog-to-digital
  • the memory 30 may be of the flash variety.
  • the memory may take
  • the memory address control 28 acts to feed successive bits of the
  • nonvolatile memory 30 will depend on economic considerations but a preferred
  • embodiment may store 2-30 minutes of compressed audio. When the capacity of 8 the memory 30 has been reached the memory address control will operate to feed
  • nonvolatile memory 30 is devoted to recording this queue of newly arriving sounds.
  • the pushbutton is permanently
  • the pushbutton 32 could be located remotely and could communicate with the balance of the
  • audio recorder circuity via a suitable electromagnetic link such as infrared or RF.
  • the remotely located preserve switch would be equipped with an appropriate
  • the system may be programmed so that each time
  • memory 30 has ten locations. Initially the signals from the compressor 26 are
  • the queue length is locations 1-10.
  • each memory section could be shifted to the subsequent memory
  • the captured memory sections are provided with sequential identifying numbers. Any captured section can be replayed under appropriate signals entered into the
  • the operator causes the captured memory section to be read out to a decompressor circuit 36 which feeds a digital-to-analog converter 38 to convert the digits back into an audio signal, and play back the captured signal
  • the keypad 34 allows the operator
  • a display 42 connected to the memory address control displays the number
  • the display may show the date/time or a
  • message number and the user may select a message for playback using the keypad or a voice responsive device.
  • the memory address control preferably includes circuitry or a program
  • FIG. 11 An alternative embodiment of the storage section of the present invention is illustrated in Figure 3. The circuitry of the two are identical through the
  • first-in first-out shift memory 50 which may be volatile, so that its contents are not preserved when this switch 22 is turned to the off position.
  • the compressed signals are fed into an initial section of the memory and each time a compressed signal is added to the memory all of the memory contents are
  • pushbutton 52 is actuated sending a signal to a preserve memory address control
  • the control unit 54 transfers an initial section of the contents of the
  • first-in first-out memory 50 representing the most recently recorded sounds
  • memory may constitute the entire contents of the FIFO memory, or alternatively,
  • the operator may cause the transfer of a second section of the FIFO
  • the FIFO memory may store 30 seconds of sound and
  • decompressor 64 which feeds a digital-to-analog converter 66 and provides output to a loudspeaker 68.
  • the keyboard 60 and display 62 may also be used to adjust
  • the display 62 will also indicate the number of preserve

Landscapes

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

Abstract

L'enregistrement audio se fait par mise en mémoire (28) d'une entrée passant par un microphone (16). La commande de l'alimentation électrique (20) se fait avec un interrupteur marche/arrêt (22). La mémoire est adressable (30) de façon à permettre une lecture reproduite par un haut-parleur classique (40). On peut faire passer les données audio dans un compresseur (26) afin de réduire les besoins en espace de mise en mémoire. Un décompresseur (36) traite une sortie audio appropriée pour qu'elle puisse être utilisée par le haut-parleur (40) lors de la lecture.
EP98902702A 1998-01-22 1998-01-22 Enregistreur audio avec mise en memoire retroactive Withdrawn EP1057171A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/001337 WO1999038154A1 (fr) 1996-02-13 1998-01-22 Enregistreur audio avec mise en memoire retroactive

Publications (2)

Publication Number Publication Date
EP1057171A1 true EP1057171A1 (fr) 2000-12-06
EP1057171A4 EP1057171A4 (fr) 2006-09-20

Family

ID=22266257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98902702A Withdrawn EP1057171A4 (fr) 1998-01-22 1998-01-22 Enregistreur audio avec mise en memoire retroactive

Country Status (4)

Country Link
EP (1) EP1057171A4 (fr)
JP (1) JP2002501224A (fr)
AU (1) AU5929698A (fr)
CA (1) CA2318552A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457373A2 (fr) * 1985-06-06 1991-11-21 Picotrin Technology, Inc. Système de retard pour un signal d'information
US5687279A (en) * 1994-12-23 1997-11-11 Intel Corporation Retro-storing analog information in a digital storage circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457373A2 (fr) * 1985-06-06 1991-11-21 Picotrin Technology, Inc. Système de retard pour un signal d'information
US5687279A (en) * 1994-12-23 1997-11-11 Intel Corporation Retro-storing analog information in a digital storage circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9938154A1 *

Also Published As

Publication number Publication date
CA2318552A1 (fr) 1999-07-29
AU5929698A (en) 1999-08-09
JP2002501224A (ja) 2002-01-15
EP1057171A4 (fr) 2006-09-20

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