Emergency call system

• US 6,198,914 B1
• Filed: 12/10/1997
• Issued: 03/06/2001
• Est. Priority Date: 10/08/1997
• Status: Expired due to Fees

• Current Assignee: Takao Saegusa
• Original Assignee: Takao Saegusa
• Inventors: Saegusa, Takao
• Primary Examiner(s): Vo, Nguyen
• Assistant Examiner(s): MEHRPOUR, NAGHMEH
• Application Number:
  US08/982,041
• Time in Patent Office: 1,182 Days
• Field of Search: 455/404, 455/421, 455/456, 455/457, 342/357.09, 342/357.1, 342/357.07, 340/988, 340/990, 340/460, 340/692, 379/368
• US Class Current: 455/404.2
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

Upon occurrence of any emergent state for a user, the user depresses an emergency call button of his portable telephone to transmit a signal therefrom to an emergency call center, whereby user ID and positional information of the portable telephone obtained on the basis of signals from GPS satellites are sent to the emergency call center. DGPS generates a correcting signal out of the positional information based on both the signals from the GPS satellites and the positional information of a fixed station, and then transmits such correcting signal to the emergency call center. In response to a terminating call from the portable telephone and reception of the user ID, the emergency call center outputs the individual information of the user to a display device and corrects the positional information of the portable telephone in accordance with the correcting signal, and makes contact with a hospital or a fire station while displaying the map information of the vicinity around the corrected position on the display device.

Claims

1. An emergency call system having an emergency call mobile station carried by each user to transmit emergency information and an emergency call center to receive the emergency information, said system comprising:

locating means incorporated in said emergency call mobile station for generating first positional information by detecting a position of said mobile station;

emergency switch means incorporated in said emergency call mobile station;

emergent state detection means incorporated in said emergency call mobile station for outputting an emergent state detection signal when said emergency switch means is in its on-state;

transmitting means incorporated in said emergency call mobile station for transmitting the emergency information to said emergency call center in response to the emergent state detection signal, said emergency information including the first positional information and an identification information to specify the user of said emergency call mobile station;

a map information database incorporated in said emergency call center to store map information;

an individual information database incorporated in said emergency call center to store individual information relative to the user which includes the user'"'"'s clinical record;

emergency information receiving means incorporated in said emergency call center for receiving the emergency information;

display means incorporated in said emergency call center for displaying information thereon;

position display means incorporated in said emergency call center for displaying the map information of the vicinity around the position of said emergency call mobile station on said display means by referring to said map information database on the basis of the first positional information included in the emergency information;

individual information display means incorporated in said emergency call center for displaying the individual information of the user on said display means by referring to said individual information database on the basis of the identification information included in the emergency information;

message storage means incorporated in said emergency call mobile station for storing a voice message to be provided to a user in advance for a first emergency measure;

a speaker incorporated in said emergency call mobile station for emitting an audio output; and

message output means incorporated in said emergency call mobile station for outputting the voice message to said speaker in response to the emergent state detection signal.

2. The emergency call system according to claim 1, wherein said emergent state detection means outputs the emergent state detection signal when said emergency switch means is turned on for a predetermined time.

3. The emergency call system according to claim 1, further comprising alarm means incorporated in said emergency call mobile station to notify the outside about occurrence of an emergent state.

4. The emergency call system according to claim 1, wherein said locating means is so formed as to locate the position on the basis of signals from GPS satellites, and said system further comprises position correcting means incorporated in said emergency call center to correct the first positional information on the basis of the correcting information which is calculated by a differential GPS reference station on the basis of both second positional information based on the signals from the GPS satellites and known third positional information.

5. The emergency call system according to claim 1, wherein said transmitting means performs transmission to said emergency call center in conformity with the same communication procedure as that of a cellular telephone.

6. An emergency call system according to claim 1, further comprising:

second transmitting means incorporated in said emergency call center for transmitting a second voice message concerning second measures for the user generated in response to the individual information stored in said individual information database to said emergency call mobile station; and

receiving means incorporated in said emergency call mobile station for receiving the second voice message.