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1. (WO2001001675) VIDEO CAMERA WITH MAJOR FUNCTIONS IMPLEMENTED IN HOST SOFTWARE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/001675 International Application No.: PCT/US2000/018046
Publication Date: 04.01.2001 International Filing Date: 29.06.2000
Chapter 2 Demand Filed: 10.01.2001
IPC:
H04N 7/16 (2011.01) ,H04N 7/26 (2006.01) ,H04N 5/445 (2011.01) ,H04N 5/232 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
16
Analogue secrecy systems; Analogue subscription systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
24
Systems for the transmission of television signals using pulse code modulation
26
using bandwidth reduction
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
44
Receiver circuitry
445
for displaying additional information
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
232
Devices for controlling television cameras, e.g. remote control
Applicants: LOGITECH, INC.[US/US]; 6505 Kaiser Drive Fremont, CA 94555-3615, US
Inventors: HSU, Mark; US
NORCROSS, Mitchell; US
AUBERGER, Georges; US
ZIMMERMANN, Remy; US
MAGGI, Sergio; US
SANCHEZ, George; US
BILLERBECK, Bryed; US
LI, Wei; US
LABROUSSE, Junien; US
Agent: HAUGHEY, Paul, C. ; Townsend And Townsend And Crew LLP Two Embarcadero Center 8th Floor San Francisco, CA 94111-3834, US
Priority Data:
09/343,93430.06.1999US
09/345,16730.06.1999US
09/464,36415.12.1999US
09/602,54723.06.2000US
Title (EN) VIDEO CAMERA WITH MAJOR FUNCTIONS IMPLEMENTED IN HOST SOFTWARE
(FR) CAMERA VIDEO A FONCTIONS PRINCIPALES MISES EN OEUVRE DANS UN LOGICIEL HOTE
Abstract:
(EN) A low cost camera (32) by implementing the major functions in host software is provided. This is accomplished by sending raw, digitized data from the camera (32) directly to the host (36). The increased volume of raw data is handled by either an improved compression/decompression scheme using lossless compression, using lossy compression or using a shared bus (30) with higher bandwidth. By moving such functions a color processing and scaling to the host (36), the pixel correction can also be moved to the host (36). This in turn allows the elimination of the frame buffer memory from the camera. Finally, the camera (32) can use a low cost lens by implementing vignetting, distortion, gamma or aliasing correction with a correction value stored in a register (34) of the camera for later access by the host (36) to perform corrections.
(FR) L'invention concerne une caméra bon marché dont les fonctions principales sont mises en oeuvre dans un logiciel hôte. On effectue cette mise en oeuvre en envoyant des données brutes numérisées directement de la camera vers l'hôte. Le volume de données brutes augmenté est manipulé au moyen d'un mécanisme de compression/décompression amélioré par compression sans perte, par compression avec perte ou à l'aide d'un bus partagé à largeur de bande plus élevée. Du fait que des fonctions telles que le traitement de la couleur, et la mise à l'échelle sont déplacées vers l'hôte, la correction de pixel peut également se déplacer vers ledit hôte, ce qui permet ensuite d'éliminer la mémoire tampon de trame de la caméra. Ladite caméra peut, en outre, utiliser une lentille bon marché permettant d'effectuer une correction des effets de vignettage, de distortion, de gamma ou de repliement, à l'aide d'une valeur de correction stockée dans un registre de la caméra afin que l'hôte puisse y accéder ultérieurement pour exécuter des corrections.
front page image
Designated States: CN, DE, KR
Publication Language: English (EN)
Filing Language: English (EN)