Mobile terminal and emergency reporting system
First Claim
1. A mobile terminal comprising:
- a position data detector for detecting position data corresponding to an absolute position along a traveled path, wherein the position data includes a time data, a latitude and longitude date, a distance data traveled by said terminal, a circular direction data and a global positioning system (GPS) quasi-distance data;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position;
an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center.
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Accused Products
Abstract
When a mobile terminal transmits information to an information service centre, the terminal stores positional data of plural points detected by a positional data detector such as a GPS satellite into a memory. The mobile terminal transmits an instant status data, positional data and the terminal ID when an emergency such as an accident, sudden illness occurs. At this time, an appropriate data compression is conducted responsive to a travelling status, such as using relative information, a data-(non-) existing-flag, and a number of points, so that the data volume to be transmitted can be reduced. As a result, the accuracy of positional data is maintained and yet the data transmission time is shortened.
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Citations
19 Claims
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1. A mobile terminal comprising:
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a position data detector for detecting position data corresponding to an absolute position along a traveled path, wherein the position data includes a time data, a latitude and longitude date, a distance data traveled by said terminal, a circular direction data and a global positioning system (GPS) quasi-distance data;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position;
an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile terminal comprising:
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a position data detector for detecting position data corresponding to an absolute position along a traveled path;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position, wherein said data compressor calculates an angle difference between an instant point of said terminal and an immediate last point thereof and compresses the difference;
an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center, wherein said data compressor does not transmit the position data when the circular angle at the point where the data is to be acquired is smaller than a given angle.
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13. A mobile terminal comprising:
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a position data detector for detecting position data corresponding to an absolute position along a traveled path;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position, wherein said data compressor adds a flag indicating a presence of a distance data traveled, and transmits a data-existing flag and the distance data traveled as a transmission data when the distance data traveled is available, and wherein said data compressor transmits a data-non-existing-flag as a transmission data when no distance data is available;
an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center, wherein said data compressor does not transmit the position data when the circular angle at the point where the data is to be acquired is smaller than a given angle.
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14. A mobile terminal comprising:
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a position data detector for detecting position data corresponding to an absolute position along a traveled path;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position, wherein said data compressor adds a flag indicating a presence of a circling direction data, and transmits a data-existing flag and the circling direction data as a transmission data when the circling direction data is available, and wherein said data compressor transmits a data-non-existing-flag as a transmission data when no circling direction data is available;
an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center, wherein said data compressor does not transmit the position data when the circular angle at the point where the data is to be acquired is smaller than a given angle.
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15. A mobile terminal comprising:
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a position data detector for detecting position data corresponding to an absolute position along a traveled path;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position, wherein said data compressor adds a flag indicating a presence of a GPS quasi distance data, and transmits a data-existing flag and the GPS quasi distance data as a transmission data when the GPS quasi distance data is available, and wherein said data compressor transmits a data-non-existing-flag as a transmission data when no GPS quasi distance data is available, an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center, wherein said data compressor does not transmit the position data when the circular angle at the point where the data is to be acquired is smaller than a given angle.
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16. A mobile terminal comprising:
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a position data detector for detecting position data corresponding to an absolute position along a traveled path;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position, wherein said data compressor compresses a surplus obtained by dividing the GPS quasi-distance data by a value corresponding to a specified distance as the transmission data for compressing data volume;
an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center, wherein said data compressor does not transmit the position data when the circular angle at the point where the data is to be acquired is smaller than a given angle.
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17. A mobile terminal comprising:
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a position data detector for detecting position data corresponding to an absolute position along a traveled path;
a memory for storing a plurality of said position data;
a data compressor for producing compressed relative position data, said relative position data being a change in said absolute position, wherein said data compressor does not transmit the position data when the circular angle at the point where the data is to be acquired is smaller than a given angle;
an input device for inputting information indicating an emergency;
a transmission data producing device for producing a transmission data including said compressed relative position data and a terminal ID; and
a transceiver for transmitting said compressed relative position data to an information service center.
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18. An information service center comprising:
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a receiver for receiving emergency information including a compressed relative position data from a mobile terminal wherein the position data includes a time data, a latitude and longitude date, a distance data traveled by said terminal a circular direction data and a global positioning system (GPS) quasi-distance data;
a decoder for decoding said compressed relative position data;
an acquisition device for acquiring data of a path traveled by the mobile terminal and developing a map corresponding to the compressed relative position data; and
a display for displaying the path traveled by the mobile terminal on the map.
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19. An emergency reporting system comprising:
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a mobile terminal linked with an information service center through radio communication, wherein said mobile terminal transmits a compressed relative positional data including a track traveled by said terminal together with a terminal ID and emergency information, wherein the position data includes a time data, a latitude and longitude date, a distance data traveled by said terminal, a circular direction a data and a global positioning system (GPS) quasi-distance data, wherein said information service center identifies said terminal with the terminal ID received, decodes the compressed relative positional data and displays the track traveled by said terminal on a map indicating an instant position of said terminal, and answers to said terminal about the emergency information.
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Specification