Title:
【発明の名称】データ通信方式
Document Type and Number:
Japanese Patent JP2746915
Kind Code:
B2
Abstract:
PURPOSE:To prevent illegal invasion of the 3rd party able to recognize a pass word of a terminal equipment by generating a pass word from a center and writing it into a file of the terminal equipment every time the terminal equipment and the center are connected. CONSTITUTION:When a center 1 is called from a keyboard 22 and the line is in the connecting state, the center 1 outputs a terminal ID, input request to a CRT 23. When the terminal ID is inputted from the keyboard 22, a CPU 11 reads a security code of the said terminal ID from a main storage device 13. When the security code is registered in the main storage device 13, a security code is read from a security file of a floppy disk device 24 and two security codes are compared and checked. If the security codes are not matched, it is regarded as an illegal input and the CPU 11 interrupts the line.
Inventors:
YOSHIOKA TAKAO
KATAOKA TADAMORI
KATAOKA TADAMORI
Application Number:
JP14310188A
Publication Date:
May 06, 1998
Filing Date:
June 10, 1988
Export Citation:
Assignee:
NIPPON DENKI KK
TOKYO TERE METSUSEEJI KK
TOKYO TERE METSUSEEJI KK
International Classes:
G06F21/44; G06F15/00; H04L9/00; H04L9/32; H04L13/00; H04L29/08; (IPC1-7): H04L9/32; G06F15/00; H04L29/08
Domestic Patent References:
| JP62184563A | ||||
| JP6051341A | ||||
| JP62213338A | ||||
| JP5617549A | ||||
| JP62134750A |
Attorney, Agent or Firm:
Naotaka Ide