(19)
(11) EP 2 271 052 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
06.04.2011 Bulletin 2011/14

(43) Date of publication:
05.01.2011 Bulletin 2011/01

(21) Application number: 10179407.1

(22) Date of filing: 06.12.2005
(51) International Patent Classification (IPC): 
H04L 29/06(2006.01)
 H04M 7/00(2006.01)
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 07.12.2004 JP 2004353537

(62) Application number of the earlier application in accordance with Art. 76 EPC:
05090333.5 / 1670206

(71) Applicant: NEC Corporation
Minato-ku Tokyo 108-8001 (JP)

(72) Inventor:
  • Ozawa, Kazunori
    Tokyo 1088001 (JP)

(74) Representative: Wenzel & Kalkoff 
Patentanwälte Postfach 73 04 66
22124 Hamburg
22124 Hamburg (DE)

 
Remarks:
This application was filed on 24-09-2010 as a divisional application to the application mentioned under INID code 62.
 


(54) Apparatus and method for converting control information


(57) Apparatus and method for converting control information for picture and speech communication between plural terminals connected to different networks, such as a circuit-switched network and IP network. A converting apparatus 400 for control information or media information for picture/speech communications is provided across first and second terminals 301, 302 connected to respective different types of networks. Converting apparatus 400 includes control information converter 420, transcoder 450 and ability information converter 460. In case the ability information extracted from the decoding information, received from the first terminal 301, is not coincident to the ability information extracted from the call control information received from the second terminal 302, it is further checked whether or not there is picture format size coincidence. If the picture format size coincidence persists in one direction, processing is carried out for converting part of the decoding information or the control information, without causing the operations of the transcoder. In case there is no picture format size coincidence, the transcoder 450 is booted to convert the bitstream.