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WO1999059332A1 - An improved high resolution video camera - Google Patents

An improved high resolution video camera Download PDF

Info

Publication number
WO1999059332A1
WO1999059332A1 PCT/GB1999/001216 GB9901216W WO9959332A1 WO 1999059332 A1 WO1999059332 A1 WO 1999059332A1 GB 9901216 W GB9901216 W GB 9901216W WO 9959332 A1 WO9959332 A1 WO 9959332A1
Authority
WO
WIPO (PCT)
Prior art keywords
high resolution
signal
video camera
resolution video
network
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.)
Ceased
Application number
PCT/GB1999/001216
Other languages
French (fr)
Inventor
Peter Beare
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.)
BAXALL SECURITY Ltd
Original Assignee
BAXALL SECURITY 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 BAXALL SECURITY Ltd filed Critical BAXALL SECURITY Ltd
Priority to DE0995306T priority Critical patent/DE995306T1/en
Priority to EP99920949A priority patent/EP0995306A1/en
Priority to AU38333/99A priority patent/AU3833399A/en
Publication of WO1999059332A1 publication Critical patent/WO1999059332A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment

Definitions

  • This invention relates to an improved high resolution video camera
  • CCTV closed circuit television camera
  • ATM asynchronous transfer mode
  • High resolution video cameras such as closed circuit video cameras
  • cameras can be used in security systems and surveillance systems.
  • An ATM network is a network along which data is transmitted in
  • an ATM network can be configured so as
  • the present invention is based on the realisation that it should be
  • video images can be achieved and such that high quality images can be
  • said compression means is operable to compress said video
  • the camera also includes a connection to an audio input
  • a device for example a microphone, and includes means to convert an
  • the camera also includes a connection for control data.
  • the camera also includes means to receive an audio signal
  • audio output device for example a loud speaker.
  • the compression circuit 1 1 is also linked to an audio input device
  • the compression circuit 1 1 comprising a circuit which is operable to
  • the compression circuitry is a wavelet compression algorithm which is
  • the ATM interface device 12 comprises a circuit which is designed
  • the audio input device 13 can comprise any suitable audio device for
  • example a microphone
  • the high resolution video camera 10 produces a video signal
  • the camera 10 can also be adapted such that audio signals which
  • the camera 10 will include circuitry (not shown) which can
  • suitable audio device for example a loudspeaker.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Studio Devices (AREA)
  • Facsimiles In General (AREA)

Abstract

A high resolution video camera (10) is disclosed in which image data is received is compressed and encoded using a wavelet compression algorithm, for example MPEG4 compression standard and which can be interfaced with an ATM network to allow transmission of the image data along the network.

Description

AN IMPROVED HIGH RESOLUTION VIDEO CAMERA
This invention relates to an improved high resolution video camera
(referred to variously as closed circuit television camera or (CCTV)) for use
with an asynchronous transfer mode (ATM) network.
High resolution video cameras such as closed circuit video cameras
are known and are generally used to provide high resolution, and hence high
quality, real time video images for many purposes. For example, such
cameras can be used in security systems and surveillance systems.
An ATM network is a network along which data is transmitted in
short chunks or cells. This allows real time data to be delivered without
significant delays. Furthermore, an ATM network can be configured so as
to be capable of transmitting video, audio and other data all at the same
time rendering it unnecessary to provide a different network for transmission
of each of these types of signals.
The present invention is based on the realisation that it should be
possible to provide a high resolution video camera which is capable of being
connected to an ATM network whereby fast transmission of high quality
video images can be achieved and such that high quality images can be
viewed at any point on the network. Furthermore, as only one network is
required for all types of signal, there is a considerable reduction in cabling
costs. Still further, it is possible to extend the network particularly simply
because only one network is used and therefore only one set of cabling. Thus and in accordance with the present invention there is provided
a high resolution video camera which produces an image signal, said camera
including means to compress and encode said video signal using a wavelet
compression algorithm and means for interfacing with an ATM network
whereby said compressed video signal can be transmitted along said
network.
With this arrangement it is possible to provide a high resolution video
camera which is capable of sending video signals over an ATM network.
Preferably said compression means is operable to compress said video
signal according to an algorithm which is part of the MPEG4 standard.
Preferably the camera also includes a connection to an audio input
device, for example a microphone, and includes means to convert an
analogue audio signal to a digital signal for transmission over an ATM
network.
Preferably the camera also includes a connection for control data.
Preferably the camera also includes means to receive an audio signal
from an ATM network and convert this to an analogue signal for a suitable
audio output device, for example a loud speaker.
The invention will now be described further by way of example only
and with reference to the accompanying drawings, the single Figure of
which shows a schematic representation of one embodiment of the camera
according to the present invention. Referring now to the Figure, there is shown a digital high resolution
video camera 10 linked to a compression circuit 1 1 and an ATM interface
unit 12. The compression circuit 1 1 is also linked to an audio input device
13. In practice, the compression circuit 1 1 and ATM interface circuit 12
will be contained within the body of the camera 10 but are shown as
separate items in the drawing for ease of description.
The compression circuit 1 1 comprising a circuit which is operable to
compress video signals received from the digital video camera 10 according
to a particular image compression algorithm. The preferred algorithm used
by the compression circuitry is a wavelet compression algorithm which is
part of the MPEG4 standard.
The ATM interface device 12 comprises a circuit which is designed
to convert the compressed video signals into a form suitable for
transmission over an ATM network. Thus the ATM interface device breaks
up the compressed video signals into data cells which are transmitted along
the network.
The audio input device 13 can comprise any suitable audio device for
example a microphone.
In use, the high resolution video camera 10 produces a video signal
which is compressed and encoded by the compression circuitry 1 1
according to the wavelet compression algorithm. The compressed video
signal is then converted into data cells by the interface device 12 and is transmitted over the ATM network. The typical rate of transmission of
information over the network is approximately 25Mbps.
If it is desired that audio signals as well as video signals are
transmitted over the ATM network, it is possible for the audio device 1 3,
which is for example a microphone, to provide an analogue audio signal
which is also converted within the compression circuitry 1 1 into a digital
signal and can be transmitted along with the video signals over the ATM
network. The camera 10 can also be adapted such that audio signals which
are transmitted over the ATM network can be received. In these
circumstances, the camera 10 will include circuitry (not shown) which can
convert the data cells into a digital signal, and can convert the digital signal,
to an analogue signal whereby the audio signal can be played back using a
suitable audio device for example a loudspeaker.
It will be understood that the present invention will find application
in many areas. However, the present Applicants have realised that such a
camera will find particular application in the field of security. For example,
it will be possible for a number of high resolution video cameras 10 to be
linked together, and to a control panel, by a single ATM network whereby
images generated by each of the cameras can be viewed at any location on
the network and there can be two way communication of data between the
control panel and the cameras. Furthermore, it is possible for a video signal
and an audio signal, or indeed any number of data signals to be transmitted along the network at the same time.
It is of course to be understood that the invention is not intended to
be restricted to the details of the above embodiment which are described
by way of example only.

Claims

1 . A high resolution video camera which produces an image signal, said
earner, including means to compress and encode said video signal
using a wavelet compression algorithm and means for interfacing
with an ATM network whereby said compressed video signal can be
transmitted along said network.
2. A high resolution video camera according to claim 1 , in which said
compression means is operable to compress said video signal
according to an algorithm which is part of the MPEG4 standard.
3. A high resolution video camera according to claim 1 or claim 2,
further including an audio input device, for example a microphone,
and means to convert an analogue audio signal to a digital signal for
transmission over an ATM network.
4. A high resolution video camera according to any one of claims 1 to
3, wherein the camera also includes a connection for controlled data.
5. A high resolution video camera according to any one of claims 1 to
4, wherein the camera includes means to receive an audio signal from
an ATM network and convert this to an analogue signal for a suitable
audio output device, for example a loudspeaker.
PCT/GB1999/001216 1998-05-08 1999-05-07 An improved high resolution video camera Ceased WO1999059332A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE0995306T DE995306T1 (en) 1998-05-08 1999-05-07 IMPROVED HIGH-RESOLUTION VIDEO CAMERA
EP99920949A EP0995306A1 (en) 1998-05-08 1999-05-07 An improved high resolution video camera
AU38333/99A AU3833399A (en) 1998-05-08 1999-05-07 An improved high resolution video camera

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9809910.4 1998-05-08
GBGB9809910.4A GB9809910D0 (en) 1998-05-08 1998-05-08 An improved high resolution video camera

Publications (1)

Publication Number Publication Date
WO1999059332A1 true WO1999059332A1 (en) 1999-11-18

Family

ID=10831727

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/001216 Ceased WO1999059332A1 (en) 1998-05-08 1999-05-07 An improved high resolution video camera

Country Status (6)

Country Link
EP (1) EP0995306A1 (en)
CN (1) CN1273739A (en)
AU (1) AU3833399A (en)
DE (1) DE995306T1 (en)
GB (1) GB9809910D0 (en)
WO (1) WO1999059332A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10136176A1 (en) * 2001-07-25 2003-02-13 Thomson Brandt Gmbh Digital video device for integration in the network

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007850A1 (en) * 1989-11-09 1991-05-30 Zone Technology Pty Limited Digital video camera
EP0467094A2 (en) * 1990-06-21 1992-01-22 Fujitsu Limited Telemetry monitoring method and device therefor for transmitting information by means of asynchronous transfer mode technique in broadband ISDN
WO1996002106A1 (en) * 1994-07-09 1996-01-25 Vision 1 International Limited Digitally networked video camera
US5581297A (en) * 1992-07-24 1996-12-03 Intelligent Instruments Corporation Low power video security monitoring system
WO1997009818A1 (en) * 1995-08-21 1997-03-13 Starcam Systems, Inc. High-speed high-resolution multi-frame real-time digital camera
EP0831655A2 (en) * 1996-09-19 1998-03-25 Daewoo Electronics Co., Ltd Method and apparatus for encoding a video signal of a contour of an object

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007850A1 (en) * 1989-11-09 1991-05-30 Zone Technology Pty Limited Digital video camera
EP0467094A2 (en) * 1990-06-21 1992-01-22 Fujitsu Limited Telemetry monitoring method and device therefor for transmitting information by means of asynchronous transfer mode technique in broadband ISDN
US5581297A (en) * 1992-07-24 1996-12-03 Intelligent Instruments Corporation Low power video security monitoring system
WO1996002106A1 (en) * 1994-07-09 1996-01-25 Vision 1 International Limited Digitally networked video camera
WO1997009818A1 (en) * 1995-08-21 1997-03-13 Starcam Systems, Inc. High-speed high-resolution multi-frame real-time digital camera
EP0831655A2 (en) * 1996-09-19 1998-03-25 Daewoo Electronics Co., Ltd Method and apparatus for encoding a video signal of a contour of an object

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHANG S J ET AL: "A HIGH SPEED VLSI ARCHITECTURE OF DISCRETE WAVELET TRANSFORM FOR MPEG-4", IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 43, no. 3, 1 August 1997 (1997-08-01), pages 623 - 627, XP000742540, ISSN: 0098-3063 *

Also Published As

Publication number Publication date
DE995306T1 (en) 2001-01-11
CN1273739A (en) 2000-11-15
EP0995306A1 (en) 2000-04-26
GB9809910D0 (en) 1998-07-08
AU3833399A (en) 1999-11-29

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