WO2002013523A1 - Portable video recorder system - Google Patents

Portable video recorder system Download PDF

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Publication number
WO2002013523A1
WO2002013523A1 PCT/EP2001/008640 EP0108640W WO0213523A1 WO 2002013523 A1 WO2002013523 A1 WO 2002013523A1 EP 0108640 W EP0108640 W EP 0108640W WO 0213523 A1 WO0213523 A1 WO 0213523A1
Authority
WO
WIPO (PCT)
Prior art keywords
memory
video
data
recorder system
video recorder
Prior art date
Application number
PCT/EP2001/008640
Other languages
French (fr)
Inventor
Yoshiharu Chikazawa
Original Assignee
Thomson Licensing S.A.
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 Thomson Licensing S.A. filed Critical Thomson Licensing S.A.
Priority to AU2001282029A priority Critical patent/AU2001282029A1/en
Priority to JP2002518746A priority patent/JP5000067B2/en
Priority to KR1020037001540A priority patent/KR100847312B1/en
Priority to US10/343,865 priority patent/US7330636B2/en
Priority to EP01960563A priority patent/EP1308038A1/en
Publication of WO2002013523A1 publication Critical patent/WO2002013523A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver

Definitions

  • the invention relates to a portable video recorder system.
  • the camcorders which are presently available on the market may have a very small weight. They may also operate automatically. Therefore, they are quite easy to use. However, it is necessary to use both hands for controlling the operation of the camcorder. This may be inconvenient for certain usages of a camcorder, for instance if the user wishes to take written notes when he is shooting a scene. It is the reason why it has been proposed to separate the image capturing part of the camcorder from the processing and recording part. In fact, the mechanical recording part has the greatest consumption of energy and it is the heaviest part of the camcorder.
  • the first part which comprises the image capturing device and a buffer memory, is very light and may be carried with free hands, for instance on the forehead.
  • the buffer memory may be used, after the shooting, to transfer the recording to a cassette or tape having a greater capacity than this buffer memory.
  • a buffer memory has a limited capacity, for instance about one minute of recording. Therefore, it is necessary to frequently transfer the content of the memory to the cassette. This operation is not quite convenient. Moreover, during this transfer the image capturing device cannot be used.
  • the invention overcomes these drawbacks.
  • the portable video recording system is characterized by the fact that it comprises : a video shooting part including an image capturing device, video compression means, a buffer memory filled by the output of the video compression means and low data rate wireless transmission equipment having a short range, and a recording part including a reception equipment and a cassette or tape or disk or solid state recording unit .
  • a video shooting part including an image capturing device, video compression means, a buffer memory filled by the output of the video compression means and low data rate wireless transmission equipment having a short range
  • a recording part including a reception equipment and a cassette or tape or disk or solid state recording unit .
  • audio data compressed or not, are generally transmitted together with compressed video data.
  • the user may carry the recording part in the pocket or in a bag.
  • the system comprises means for simultaneously transmitting data from the memory of the capturing device and filling this memory. Therefore, the transmission and the recording on a cassette, tape, disk or solid state memory happen during the shooting of scenes by the image capturing device.
  • the recording part includes a buffer memory which provides data to the cassette, tape, disk, or solid state memory at a higher rate than the wireless transmission data.
  • a buffer memory which provides data to the cassette, tape, disk, or solid state memory at a higher rate than the wireless transmission data.
  • this buffer memory of the video shooting part may be quickly saturated, for instance after one minute of shooting.
  • This intermittent operation of the system is not a drawback because it corresponds to the usual way of operating a camcorder.
  • the recording time of scenes is generally comprised between 10 seconds and a maximum of one minute, and the time separating the shooting of two scenes may be several minutes.
  • the invention concerns a portable video recorder system
  • a portable video recorder system comprising: a video shooting part including an image capturing device, video compression means, a buffer memory filled by the output of the video compression means and low data rate wireless transmission equipment having a short range, and a recording part including a reception equipment and a cassette, or tape, or disk, or solid state memory recording unit.
  • the portable video recorder system comprises, in a preferred embodiment, means for the simultaneous wireless transmission of data from the memory of the capturing device and the filling of this memory.
  • the low data rate transmission equipment of the video shooting part has, in an embodiment, a transmission rate which is about 10 times less than the data rate of filling of the buffer memory of this video shooting part.
  • the recording part includes preferably a buffer memory which provides data to the cassette, or tape, or disk, or solid state memory at a higher rate than the wireless transmission data.
  • the data rate of the wireless transmission equipment may be about 2 Megabits per second.
  • the portable video recorder system comprises preferably means for audio detection and storing into the buffer memory of the shooting part and for transmission together with video data.
  • the video recorder system represented on the drawing comprises two parts: A first part 10 for audio and video shooting and a second part 20 for audio and video cassette recording.
  • the first part 10 is designed to have a very small weight in order to be carried preferably on the forehead.
  • This first part 10 comprises a classical image capturing device 12 with a lens and a microphone (not shown) .
  • the image is detected by CCD detectors.
  • Video and audio compression means
  • the audio and video compressed data are provided to a buffer memory 16 having, for instance, a capacity of 1
  • the Gigabit, and the data of this buffer memory 16 are provided to a communication interface 18 in order to transmit these data with a low data rate through a transmission antenna 19.
  • the transmission equipment has a small range in order to avoid interferences with neighbouring equipments .
  • the memory 16 is filled at a rate of about 22 Megabits/second and the transmission rate of the antenna 18 is 2 Megabits/second.
  • the data transmitted by antenna 19 are received by receiving antenna 22 which provides, through an interface 24, the received data to a buffer memory 26 and this buffer memory 26 provides the received compressed audio and video data to a cassette recorder 28.
  • this recording part 20 is also provided with a LCD display 30.
  • the battery (not shown) for controlling the operation of the capturing part 10 may be very small.
  • This capturing part 10 may have a completely automatic operation.
  • a conventional eye controller which detects the direction of observation of the eye in order to focus the objective lens to the scene in the direction observed by the eye of the user.
  • the buffer memory has a capacity of 1 Gigabit and is filled at a rate of about 22 Mbits/second, it is filled (saturated) after about one minute of shooting because the transmission rate of 2 Mbits/second, i.e. the evacuation rate from the memory 16, is not sufficient to empty the memory. About 10 minutes are necessary for transmitting the whole content of memory 16 to memory 26. It has been found that this necessary intermittent operation of the system is quite acceptable for such video recorder system because, in general, scenes are shooted intermittently.
  • the invention is based on a deliberate choice of a low transmission rate, in order to provide a portable video recorder system at low price and it has been observed that this low data rate transmission is compatible with the common use of such a product .
  • any type of recording unit may be used, such as IC memory recorder or disk recorder including optical or magnetic recording, for instance a hard disk recorder.

Abstract

The invention relates to a portable video recorder system. This system comprises a video shooting part (10) including an image capturing device (12), video compression means (14), a buffer memory (16) filled by the output of the video compression means and low data rate wireless transmission equipment (18, 19) having a short range, and a recording part (20) including a reception equipment (22, 24) and a cassette, or tape, or disk, or solid state memory recording unit (28). Preferably means are provided for the simultaneous wireless transmission of data from the memory of the capturing device and the filling of this memory.

Description

PORTABLE VIDEO RECORDER SYSTEM
The invention relates to a portable video recorder system.
The camcorders which are presently available on the market may have a very small weight. They may also operate automatically. Therefore, they are quite easy to use. However, it is necessary to use both hands for controlling the operation of the camcorder. This may be inconvenient for certain usages of a camcorder, for instance if the user wishes to take written notes when he is shooting a scene. It is the reason why it has been proposed to separate the image capturing part of the camcorder from the processing and recording part. In fact, the mechanical recording part has the greatest consumption of energy and it is the heaviest part of the camcorder. In this case, the first part, which comprises the image capturing device and a buffer memory, is very light and may be carried with free hands, for instance on the forehead. The buffer memory may be used, after the shooting, to transfer the recording to a cassette or tape having a greater capacity than this buffer memory. However, a buffer memory has a limited capacity, for instance about one minute of recording. Therefore, it is necessary to frequently transfer the content of the memory to the cassette. This operation is not quite convenient. Moreover, during this transfer the image capturing device cannot be used.
The invention overcomes these drawbacks.
The portable video recording system according to the invention is characterized by the fact that it comprises : a video shooting part including an image capturing device, video compression means, a buffer memory filled by the output of the video compression means and low data rate wireless transmission equipment having a short range, and a recording part including a reception equipment and a cassette or tape or disk or solid state recording unit . Of course, audio data, compressed or not, are generally transmitted together with compressed video data.
With a wireless transmission the user may carry the recording part in the pocket or in a bag. Preferably, the system comprises means for simultaneously transmitting data from the memory of the capturing device and filling this memory. Therefore, the transmission and the recording on a cassette, tape, disk or solid state memory happen during the shooting of scenes by the image capturing device.
In an embodiment the recording part includes a buffer memory which provides data to the cassette, tape, disk, or solid state memory at a higher rate than the wireless transmission data. With the provision of two buffer memories, it is possible to use conventional cassette or disk recording units and to transmit the data with a very low data rate compared to the data rate of filling the first memory. Therefore, the transmission means may by very cheap. For instance, they may be of the kind which is currently available for transmitting data from a mobile telephone to a loudspeaker or from a microphone to a mobile telephone.
As the buffer memory of the video shooting part is filled at a higher rate than it is emptied by transmission to the recording part, this buffer memory may be quickly saturated, for instance after one minute of shooting. This means that the video recording system must be used only intermittently, i.e. after one minute of shooting it is necessary to wait a few minutes in order that space becomes available in the buffer memory. This intermittent operation of the system is not a drawback because it corresponds to the usual way of operating a camcorder. The recording time of scenes is generally comprised between 10 seconds and a maximum of one minute, and the time separating the shooting of two scenes may be several minutes. In brief the invention concerns a portable video recorder system comprising: a video shooting part including an image capturing device, video compression means, a buffer memory filled by the output of the video compression means and low data rate wireless transmission equipment having a short range, and a recording part including a reception equipment and a cassette, or tape, or disk, or solid state memory recording unit. The portable video recorder system comprises, in a preferred embodiment, means for the simultaneous wireless transmission of data from the memory of the capturing device and the filling of this memory.
The low data rate transmission equipment of the video shooting part has, in an embodiment, a transmission rate which is about 10 times less than the data rate of filling of the buffer memory of this video shooting part.
The recording part includes preferably a buffer memory which provides data to the cassette, or tape, or disk, or solid state memory at a higher rate than the wireless transmission data.
The data rate of the wireless transmission equipment may be about 2 Megabits per second.
The portable video recorder system comprises preferably means for audio detection and storing into the buffer memory of the shooting part and for transmission together with video data.
Other features and advantages of the invention will appear with the description of certain of its embodiments, this description being made with reference to the herein appended drawing which represents a video recording system according to the invention.
The video recorder system represented on the drawing comprises two parts: A first part 10 for audio and video shooting and a second part 20 for audio and video cassette recording.
The first part 10 is designed to have a very small weight in order to be carried preferably on the forehead. This first part 10 comprises a classical image capturing device 12 with a lens and a microphone (not shown) . The image is detected by CCD detectors. Video and audio compression means
14 receive the audio and TV data and compress them, for instance according to the MPEG 2 or MPEG 4 standard. The audio and video compressed data are provided to a buffer memory 16 having, for instance, a capacity of 1
Gigabit, and the data of this buffer memory 16 are provided to a communication interface 18 in order to transmit these data with a low data rate through a transmission antenna 19. The transmission equipment has a small range in order to avoid interferences with neighbouring equipments .
In an example, the memory 16 is filled at a rate of about 22 Megabits/second and the transmission rate of the antenna 18 is 2 Megabits/second. The data transmitted by antenna 19 are received by receiving antenna 22 which provides, through an interface 24, the received data to a buffer memory 26 and this buffer memory 26 provides the received compressed audio and video data to a cassette recorder 28. In the example, this recording part 20 is also provided with a LCD display 30.
The battery (not shown) for controlling the operation of the capturing part 10 may be very small. This capturing part 10 may have a completely automatic operation. For the shooting of scenes in an embodiment use is made of a conventional eye controller which detects the direction of observation of the eye in order to focus the objective lens to the scene in the direction observed by the eye of the user.
As, in the example, the buffer memory has a capacity of 1 Gigabit and is filled at a rate of about 22 Mbits/second, it is filled (saturated) after about one minute of shooting because the transmission rate of 2 Mbits/second, i.e. the evacuation rate from the memory 16, is not sufficient to empty the memory. About 10 minutes are necessary for transmitting the whole content of memory 16 to memory 26. It has been found that this necessary intermittent operation of the system is quite acceptable for such video recorder system because, in general, scenes are shooted intermittently.
In other words, the invention is based on a deliberate choice of a low transmission rate, in order to provide a portable video recorder system at low price and it has been observed that this low data rate transmission is compatible with the common use of such a product .
Instead of a cassette recorder, any type of recording unit may be used, such as IC memory recorder or disk recorder including optical or magnetic recording, for instance a hard disk recorder.

Claims

1. A portable video recorder system comprising: a video shooting part (10) including an image capturing device (12) , video compression means (14) , a buffer memory (16) filled by the output of the video compression means and low data rate wireless transmission equipment (18, 19) having a short range, and a recording part (20) including a reception equipment
(22, 24) and a cassette, or tape, or disk, or solid state memory recording unit (28) .
2. A portable video recorder system according to claim
1 comprising means for the simultaneous wireless transmission of data from the memory of the capturing device and the filling of this memory.
3. A portable video recorder system according to claim 1 or 2 wherein the low data rate transmission equipment of the video shooting part (10) has a transmission rate which is about 10 times less than the data rate of filling of the buffer memory (16) of this video shooting part.
4. A portable video recorder system according to claim 1, 2, or 3 wherein the recording part (20) includes a buffer memory (26) which provides data to the cassette, or tape, or disk, or solid state memory at a higher rate than the wireless transmission data.
5. A portable video recorder system according to any of the previous claims wherein the data rate of the wireless transmission equipment is about 2 Megabits per second.
6. A portable video recorder system according to any of the previous claims comprising means for audio detection and storing into the buffer memory of the shooting part and for transmission together with video data.
PCT/EP2001/008640 2000-08-08 2001-07-26 Portable video recorder system WO2002013523A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2001282029A AU2001282029A1 (en) 2000-08-08 2001-07-26 Portable video recorder system
JP2002518746A JP5000067B2 (en) 2000-08-08 2001-07-26 Portable video recorder system
KR1020037001540A KR100847312B1 (en) 2000-08-08 2001-07-26 Portable video recorder system
US10/343,865 US7330636B2 (en) 2000-08-08 2001-07-26 Portable video recorder system
EP01960563A EP1308038A1 (en) 2000-08-08 2001-07-26 Portable video recorder system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP00402242A EP1185098B1 (en) 2000-08-08 2000-08-08 Portable video recorder system
EP00402242.2 2000-08-08

Publications (1)

Publication Number Publication Date
WO2002013523A1 true WO2002013523A1 (en) 2002-02-14

Family

ID=8173800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/008640 WO2002013523A1 (en) 2000-08-08 2001-07-26 Portable video recorder system

Country Status (8)

Country Link
US (1) US7330636B2 (en)
EP (2) EP1185098B1 (en)
JP (1) JP5000067B2 (en)
KR (1) KR100847312B1 (en)
CN (1) CN1209915C (en)
AU (1) AU2001282029A1 (en)
DE (1) DE60038552T2 (en)
WO (1) WO2002013523A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7322066B2 (en) * 2003-07-16 2008-01-29 Church & Dwight Co., Inc. Electric toothbrushes having movable, intermittently movable, and fixed bristles
DE102004041802A1 (en) * 2004-08-24 2006-03-02 Takata-Petri (Ulm) Gmbh airbag module
JP4504873B2 (en) * 2005-05-31 2010-07-14 富士フイルム株式会社 Camera system, main body adapter, and head adapter
US20100235356A1 (en) * 2009-03-10 2010-09-16 Microsoft Corporation Organization of spatial sensor data
US8971641B2 (en) * 2010-12-16 2015-03-03 Microsoft Technology Licensing, Llc Spatial image index and associated updating functionality

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170262A (en) * 1985-09-13 1992-12-08 Canon Kabushiki Kaisha Electronic camera
WO1997009818A1 (en) * 1995-08-21 1997-03-13 Starcam Systems, Inc. High-speed high-resolution multi-frame real-time digital camera
US6052509A (en) * 1996-03-22 2000-04-18 Canon Kabushiki Kaisha Image pickup apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0955874A (en) * 1995-08-10 1997-02-25 Hitachi Ltd Image pickup device provided with radio transmission function
JP4346697B2 (en) * 1996-05-10 2009-10-21 キヤノン株式会社 Imaging device
US6545709B2 (en) * 1996-09-02 2003-04-08 Canon Kabushiki Kaisha Wireless receiving apparatus and method therefor
US6212208B1 (en) * 1996-11-11 2001-04-03 Matsushita Electric Industrial Co., Ltd. Method for coding and multiplexing multimedia data, apparatus for coding and multiplexing multimedia data, record media containing program for coding and multiplexing multimedia data
JPH10304234A (en) * 1997-04-24 1998-11-13 Sony Corp Image pickup system and video camera apparatus
DE19801968A1 (en) 1998-01-21 1999-07-22 Thomson Brandt Gmbh Method and device for convergence correction in a television set
JP2000100073A (en) * 1998-09-28 2000-04-07 Sony Corp Recording device and method, reproducing device and method, recording medium, and provision medium
KR100609421B1 (en) * 1998-11-06 2006-12-01 지버노트 코포레이션 Video camera system
US6844895B1 (en) * 1999-11-15 2005-01-18 Logitech Europe S.A. Wireless intelligent host imaging, audio and data receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170262A (en) * 1985-09-13 1992-12-08 Canon Kabushiki Kaisha Electronic camera
WO1997009818A1 (en) * 1995-08-21 1997-03-13 Starcam Systems, Inc. High-speed high-resolution multi-frame real-time digital camera
US6052509A (en) * 1996-03-22 2000-04-18 Canon Kabushiki Kaisha Image pickup apparatus

Also Published As

Publication number Publication date
JP2004506391A (en) 2004-02-26
US7330636B2 (en) 2008-02-12
US20040013400A1 (en) 2004-01-22
AU2001282029A1 (en) 2002-02-18
EP1308038A1 (en) 2003-05-07
KR100847312B1 (en) 2008-07-21
EP1185098B1 (en) 2008-04-09
EP1185098A1 (en) 2002-03-06
DE60038552D1 (en) 2008-05-21
DE60038552T2 (en) 2009-05-28
KR20030029122A (en) 2003-04-11
JP5000067B2 (en) 2012-08-15
CN1446433A (en) 2003-10-01
CN1209915C (en) 2005-07-06

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