Title:
MONITOR TV CONTROL SYSTEM FOR INTERPHONE SYSTEM
Document Type and Number:
Japanese Patent JP3195627
Kind Code:
B2
Abstract:
PURPOSE: To provide a monitor TV control system for an interphone system which enables control of monitor TV in a form corresponding to a real use pattern and further resolves the problem of a power source.
CONSTITUTION: When the call of a an intercom is incoming, a CPU 6 detects a correspondent indoor speaking equipment and the number of correspondent indoor speaking equipments in areas A1... in a memory 7 set corresponding to the door phone is counted up. The CPU 6 successively compares the number of respective correspondent indoor speaking equipments corresponding to the door phone, which call is incoming, and operates the equipments successively from the equipment having a large numerical value by turning on the power source of the monitor TV installed at the indoor speaking equipment within the range of an allowable number, and monitor images picked up by the TV camera of the door phone having the incoming call are projected at the respective monitor TV.
Inventors:
Kiyotaka Takehara
Yoshiharu Suzuki
Katsuhiko Kimura
Yoshiharu Suzuki
Katsuhiko Kimura
Application Number:
JP32924391A
Publication Date:
August 06, 2001
Filing Date:
December 13, 1991
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
H04M9/00; H04N7/18; (IPC1-7): H04N7/18; H04M9/00
Domestic Patent References:
| JP236661A |
Attorney, Agent or Firm:
Keisei Nishikawa (1 person outside)