(19)
(11) EP 0 805 426 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.04.1999 Bulletin 1999/15

(43) Date of publication A2:
05.11.1997 Bulletin 1997/45

(21) Application number: 97303080.2

(22) Date of filing: 06.05.1997
(51) International Patent Classification (IPC)6: G08B 13/196
(84) Designated Contracting States:
DE FR GB SE

(30) Priority: 03.05.1996 GB 9609406

(71) Applicants:
  • Kelly, Simon
    Bishops Stortford, Herts, CM23 3SW (GB)
  • Truefitt, Gordon
    Bishops Stortford, Herts, CM23 3SW (GB)

(72) Inventors:
  • Kelly, Simon
    Herts, CM23 3SW (GB)
  • Truefitt, Gordon
    Herts CM23 3SW (GB)

(74) Representative: Williamson, Brian et al
Hepworth Lawrence Bryer & Bizley Merlin House Falconry Court Baker's Lane
Epping Essex CM16 5DQ
Epping Essex CM16 5DQ (GB)

   


(54) A surveillance system and method of operation thereof


(57) A surveillance system comprises at least one remote device (2) and a surveillance device (4) including camera means (6). The camera means are adapted to produce a series of images of a static zone to be monitored. An image processor including comparison means arranged to compare each of said images with a previously produced reference image is also included in order to detect any difference therebetween. The image processor is further arranged to select any portion of any of said images which differs from the reference image. Communication means (12) are arranged to transmit image data characteristic of said portion to said at least one remote device, the surveillance system operating under the control of a control means (14).






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