申请公布号:JP3770800(B2)
申请号:JP20010028783
申请日期:2001.02.05
申请公布日期:2006.04.26
分类号:G09B5/14;G06Q50/00;G06Q50/10;G06Q50/20;H04B7/15;H04B7/19;H04H20/00;H04H20/53;H04H20/74;H04H20/76;H04H60/23;H04H60/82;H04N7/14;H04N7/173;H04N21/6334
主分类号:G09B5/14
摘要:PROBLEM TO BE SOLVED: To provide a bi-directional remote education system in which a lecture can be given without being disturbed by noises even when the number of learner classrooms increases and a teacher can fully respond to an utterer and the increase in the cost of a communication band and an information processing device can be restrained. SOLUTION: In the remote education system, a communication satellite and a ground network link a transmission center and a plurality of learner classrooms. When a learner makes utterance, the learner's talk request is transmitted to the transmission center and a program director selects a learner classroom to be allowed to make utterance, then the transmission center transmits a calling instruction to the learner classroom via the communication satellite and the learner classroom which receives the calling instruction transmits picture information of the learner to the transmission center via the ground network.
METHOD OF ATTACHING A SOLAR COLLECTOR PLATE TO A TUBE WATER WAY
IMPROVEMENTS IN OR RELATING TO ELECTRONIC TIMEPIECES
DIRECTING CODE ARITHMETIC CIRCUIT
N-TO-ONE BACKUP SYSTEM OF DISPERSION TYPE HIERARCHICAL SYSTEM
OBSERVING DEVICE OF STEREOSCOPIC PICTURE
COMMUNICATING DEVICE OF COMPOSITE INFORMATION
INSTANTANEOUS STOP COPING CIRCUIT
SURFACE SMOOTHING DEVICE OF MAGNETIC RECORDING MEDIUM
EXHAUST PARTICULATES REMOVER FOR DIESEL ENGINE
FUEL PURIFIER WITH ELECTRIC WATER-LEVEL INDICATOR
METHOD AND DEVICE FOR FORMING SURFACE LUBRICOUS FILM FOR MAGNETIC DISK
OIL SUPPLY STRUCTURE FOR HYDRAULIC RUSH ADJUSTER