Picture transmission method for television conference system

Abstract

Abstract PURPOSE:To transmit at low cost by synchronously controlling a reading speed and a writing speed at a low speed and transmitting recorded picture data with high density without thinning out and compressing the picture data. CONSTITUTION:When the picture of an ordinary television conferent (picture of the attendance of a conference or the like) is transmitted, the picture data inputted by a camera or the like of various types of equipments 10a for the television conference is sampled by the sampling clock of a sampling circuit 15a in a band compression equipment 14a, quantized by a quantizing circuit 16a, and encoded in an encoding circuit 17a. The encoded data is thinned out and compressed in a compression circuit 18a and transmitted to a transmitter 20a. When the picture data of a previously recorded moving picture is transmitted with the high density, the reading speed of the picture data of a video deck 30a is controlled at a low speed.

Inventors

• 👤 Shozaburo Tomita
• 👤 富田　正三郎

Bibliographic Details