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EP0370759A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Adapter for mounting a portable telephone on a vehicle

Assignee: NEC Corp
•
Filing: 1989-11-21
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Granted: —
•
Expires: 2009-11-21
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Abstract

Abstract An adapter (16) for mounting a portable telephone on a vehicle allows either one of a simple handset and a multi-function handset to be used therewith as desired. The adapter does not need a power switch and associated circuitry and, therefore, reduces the overall weight and size of a portable telephone system. When a multi-function handset (14) is used with the adapter, the adapter is switched on and off by a power switch (14a) which is provided on the handset. When a simple handset is used with the adapter, the adapter is switched on and off by an ignition switch (34) which is provided on the vehicle. Further, the adapter promotes easy and convenient use of a handset because it automatically adapts itself to both of a multi-function handset and a simple handset.

Inventors

  • 👤 Yutaka Tomiyori

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 07:38
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/3877; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0261; H04W52/0296; Y; Y02; Y02D; Y02D30/00; Y02D30/70

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 158 words
An adapter for selectively mounting on a vehicle a simple handset having an open handset detecting terminal and a multi-function handset having a handset detecting terminal connected to ground and a power switch terminal connected to a power switch, said handset forming a part of a portable telephone system, said adapter comprising: a handset detecting line connected to the handset detecting terminal; a power switch connecting line connected to the power switch terminal; power feeding line for feeding power to the portable telephone system; switching means for switching supply of power to said power feeding line on and off; flip-flop means being set when said hand-set detecting line is opened and inverted by an input to said power switch connecting line and when handset detecting line is connected to ground; and AND means for feeding a control signal to said switching means by ANDing an ignition ON state of the vehicle and an output of said flip-flop means.
Claim 2
Dependent Claim 158 words
An adapter for selectively mounting on a vehicle a simple handset having an open handset detecting terminal and a multi-function handset having a handset detecting terminal connected to ground and a power switch terminal connected to a power switch, said handset forming a part of a portable telephone system, said adapter comprising: a handset detecting line connected to the handset detecting terminal; a power switch connecting line connected to the power switch terminal; power feeding line for feeding power to the portable telephone system; switching means for switching supply of power to said power feeding line on and off; flip-flop means being set when said hand-set detecting line is opened and inverted by an input to said power switch connecting line and when handset detecting line is connected to ground; and AND means for feeding a control signal to said switching means by ANDing an ignition ON state of the vehicle and an output of said flip-flop means.
Claim 3
Dependent Claim 15 words
An adapter as claimed in claim 1, wherein said switching means comprises a relay switch.
Claim 4
Dependent Claim 15 words
An adapter as claimed in claim 1, wherein said flip-flop means comprises a T flip-flop.
Claim 5
Dependent Claim 16 words
An adapter as claimed in claim 1, wherein said AND means comprises a 2-input AND gate.

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