公开(公告)号：US20240257619A1

公开(公告)日：2024-08-01

申请号：US18631123

申请日：2024-04-10

申请人： Panasonic Holdings Corporation

发明人： NORIAKI IMAOKA ,  MIYUKI KITABATAKE ,  KOTA NAKAHIRA ,  TAKESHI ANDO ,  MASAKI YAMAMOTO ,  KENJI SUZUKI

IPC分类号： G08B5/28 ,  G08B5/36

CPC分类号： G08B5/28 ,  G08B5/36

摘要： A two-way communication device system includes: a first two-way communication device; and a second two-way communication device installed at a different location from the first two-way communication device and configured to communicate with the first two-way communication device The two-way communication device system creates an operator input operation history when an input operation is received for the first time, transmits an input signal to the second two-way communication device, creates an other-device input operation history when an input signal is received for the first time, maintains a first state when both the operator input operation history and the other-device input operation history do not exist, a second state when only one of the operator input operation history and the other-device input operation history exists, and a third state when both of the operator input operation history and the other-device input operation history exist, and deletes both the operator input operation history and the other-device input operation history at a specific cycle date and time.