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EP0880296A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Transmission restricting device, radio communication terminal equipment and transmission restricting system using these

Assignee: NEC Corp
•
Filing: 1998-05-20
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Granted: —
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Expires: 2018-05-20
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Abstract

Abstract Disclosed is a transmission restricting system which has: a transmission interruption controlling means for generating and radiating a magnetic field pattern including a command code to command the transmission interruption to a radio communication terminal equipment in a radio-wave transmission-prohibited area, the transmission interruption controlling means being disposed at the entrance or exit of the radio-wave transmission-prohibited area; a transmission interruption releasing means for generating and radiating a magnetic field pattern including a command code to command the releasing of transmission interruption to the radio communication terminal equipment in the radio-wave transmission-prohibited area, the transmission interruption releasing means being disposed at the entrance or exit of the radio-wave transmission-prohibited area; and a radio communication terminal equipment comprising means for detecting a magnetic field pattern including a command code to command the transmission interruption or the releasing of transmission interruption, and means for controlling the process of the transmission interruption or the releasing of transmission interruption according to the result of the detection of the detecting means.

Inventors

  • 👤 Masahiko Tanaka
  • 👤 Kenji Okita

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 10:57
CPC Classifications
H; H04; H04W; H04W48/00; H04W48/02; H04W48/04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44; H04M; H04M1/00; H04M1/72; H04M1/724; H04M1/72448; H04M1/72457; H04M1/60; H04M1/6033; H04M1/6041; H04M1/66

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 74 words
A transmission restricting device, comprising: a transmission interruption controlling means for generating and radiating a magnetic field pattern including a command code to command the transmission interruption to a radio communication terminal equipment in a radio-wave transmission-prohibited area; and a transmission interruption releasing means for generating and radiating a magnetic field pattern including a command code to command the releasing of transmission interruption to said radio communication terminal equipment in said radio-wave transmission-prohibited area.
Claim 2
Dependent Claim 25 words
A transmission restricting device, according to claim 1, wherein: said magnetic field pattern is generated according to a predetermined pattern to be stored in advance.
Claim 3
Dependent Claim 55 words
A radio communication terminal equipment, comprising: means for detecting a magnetic field pattern including a command code to command the transmission interruption or the releasing of transmission interruption; and means for controlling the process of the transmission interruption or the releasing of transmission interruption according to the result of the detection of said detecting means.
Claim 4
Dependent Claim 33 words
A radio communication terminal equipment, according to claim 3, wherein: said detecting means outputs the detection of the magnetic field pattern when said magnetic field pattern corresponds to a predetermined magnetic field pattern.
Claim 5
Dependent Claim 37 words
A radio communication terminal equipment, according to claim 3 or 4, wherein: said detecting means is allowed to detect said magnetic field pattern even when the power source of said radio communication terminal equipment is turned off.
Claim 6
Dependent Claim 164 words
A transmission restricting system, comprising: a transmission interruption controlling means for generating and radiating a magnetic field pattern including a command code to command the transmission interruption to a radio communication terminal equipment in a radio-wave transmission-prohibited area, said transmission interruption controlling means being disposed at the entrance or exit of said radio-wave transmission-prohibited area; and a transmission interruption releasing means for generating and radiating a magnetic field pattern including a command code to command the releasing of transmission interruption to said radio communication terminal equipment in said radio-wave transmission-prohibited area, said transmission interruption releasing means being disposed at the entrance or exit of said radio-wave transmission-prohibited area; and a radio communication terminal equipment comprising means for detecting a magnetic field pattern including a command code to command the transmission interruption or the releasing of transmission interruption, and means for controlling the process of the transmission interruption or the releasing of transmission interruption according to the result of the detection of said detecting means.
Claim 7
Dependent Claim 22 words
A transmission restricting system, according to claim 6, wherein: said radio-wave transmission-prohibited area is the inside of a hospital or a vehicle.
Claim 8
Dependent Claim 57 words
A transmission restricting system, according to claim 6 or 7, wherein: said transmission interruption releasing means has part to radiate the magnetic field pattern closer to said entrance or exit than that of said transmission interruption controlling means. radiate the magnetic field pattern closer to said entrance or exit than that of said transmission interruption controlling means.
Claim 9
Dependent Claim 52 words
A transmission restricting system, according to claim 6, 7 or 8, further comprising means for monitoring the state of vehicle engine, wherein: said radio-wave transmission-prohibited area is the inside of a vehicle, and said transmission interruption controlling means and said transmission interruption releasing means operates according to the result of the monitoring.
Claim 10
Dependent Claim 42 words
A transmission restricting system, according to claim 9, further comprising means for detecting the speed of said vehicle, wherein: said transmission interruption controlling means and said transmission interruption releasing means operates according to the result of the detection of the vehicle speed.

References Cited (Backward Citations)

US5442805A Cited
EP0472349A2 Cited
WO1998025433A1 Cited

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