EP0426451A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cordless telephone apparatus
Assignee: NEC Corp
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Filing: 1990-10-31
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Granted: —
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Expires: 2010-10-31
Abstract
Abstract A cordless lelephone apparatus having a connecting unit and a cordless telephone set. The apparatus processes a terminating call signal sent from the connecting unit and an originating call signal sent from the telephone set by giving priority to either one of the two signals. In a preferred embodiment which gives priority to originating call processing, the connecting unit stops sending a terminating call signal and, instead, sends an originating answer signal when an originating call signal with a coincident identification signal is detected during the course of transmission of the terminating call signal. The telephone set also sends an originating call signal when a carrier with a coincident identification signal is received. In an alternative embodiment which gives priority to terminating call processing, the connecting unit sends a terminating call signal on receiving an originating call signal with a coincident identification signal. The telephone set, even during a call originating procedure, stops transmitting an originating call signal and, instead, sends a terminating response signal when it receives a terminating call signal with a coincident identification signal.
Inventors
- 👤 Noburo Saegusa
- 👤 Naoyuki C/O Nec Saitama Ltd. Kohyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 08:49
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04M; H04M1/00; H04M1/72; H04M1/725; H04M1/72502; H04M1/72505; H04M1/72508
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
184 words
A cordless telephone apparatus comprising a connecting unit connected to a telephone channel, and a cordless telephone set connectable to said connecting unit over a radio channel, said cordless telephone apparatus turning on a transmission output on confirming "NO CARRIER" on a control channel and connecting said radio channel only on confirming that the identification signals of said cordless telephone set and said connecting unit are coincident; said connecting unit comprising means for interrupting, when an originating callsignal with a coincident identification signal is detected during the course of transmission of a terminating call signal, the transmission of said terminating call signal and sending an originating answer signal to said cordless telephone set to execute originating connection; said cordless telephone set comprising means for sensing, when off-hook is detected in a waiting state, a carrier on said control channel, turning on the transmission output after "NO CARRIER" has been confirmed, and even in a "CARRIER" state turning on the transmission output if a terminating call signal with a coincident identification signal is detected and then transmitting an originating call signal to said connecting unit.
Claim 2
Dependent Claim
184 words
A cordless telephone apparatus comprising a connecting unit connected to a telephone channel, and a cordless telephone set connectable to said connecting unit over a radio channel, said cordless telephone apparatus turning on a transmission output on confirming "NO CARRIER" on a control channel and connecting said radio channel only on confirming that the identification signals of said cordless telephone set and said connecting unit are coincident; said connecting unit comprising means for interrupting, when an originating callsignal with a coincident identification signal is detected during the course of transmission of a terminating call signal, the transmission of said terminating call signal and sending an originating answer signal to said cordless telephone set to execute originating connection; said cordless telephone set comprising means for sensing, when off-hook is detected in a waiting state, a carrier on said control channel, turning on the transmission output after "NO CARRIER" has been confirmed, and even in a "CARRIER" state turning on the transmission output if a terminating call signal with a coincident identification signal is detected and then transmitting an originating call signal to said connecting unit.
Claim 3
Dependent Claim
32 words
A telephone apparatus as claimed in claim 1, wherein said connecting unit and said cordless telephone set are connected to each other by said control channel and a plurality of voice channels.
Claim 4
Dependent Claim
26 words
A telephone apparatus as claimed in claim 1, wherein a wire telephone set is connected to said telephone channel to which said connecting unit is connected.
Claim 5
Dependent Claim
212 words
A connecting unit for use in a cordless telephone apparatus comprising: call incoming detecting circuit means for detecting a call incoming signal from a telephone channel; signal generating section means for generating a terminating call signal and an originating answer signal; receiving section means for receiving an originating call signal and a terminating response signal from a cordless telephone set over a designated control channel; carrier sensing circuit means included in said receiving section means; transmitting section means; and control section means for designating a control channel when said call incoming detecting section means detects a call incoming signal, wherein said control section means transmits a terminating call signal from said signal generating section means via said first transmitting section when said carrier sensing circuit means produces a "NO CARRIER" output indicating that a carrier does not exist on said designated control channel, and wherein said control section means interrupts, when an originating call signal with a coincident identification signal is received from said receiving section means while the terminating call signal is transmitted, the transmission of said terminating call signal, controls said signal generating section means to send an originating answer signal to said originating call signal to said cordless telephone set via said transmitting section means, and executes originating connection.
Claim 6
Dependent Claim
212 words
A connecting unit for use in a cordless telephone apparatus comprising: call incoming detecting circuit means for detecting a call incoming signal from a telephone channel; signal generating section means for generating a terminating call signal and an originating answer signal; receiving section means for receiving an originating call signal and a terminating response signal from a cordless telephone set over a designated control channel; carrier sensing circuit means included in said receiving section means; transmitting section means; and control section means for designating a control channel when said call incoming detecting section means detects a call incoming signal, wherein said control section means transmits a terminating call signal from said signal generating section means via said first transmitting section when said carrier sensing circuit means produces a "NO CARRIER" output indicating that a carrier does not exist on said designated control channel, and wherein said control section means interrupts, when an originating call signal with a coincident identification signal is received from said receiving section means while the terminating call signal is transmitted, the transmission of said terminating call signal, controls said signal generating section means to send an originating answer signal to said originating call signal to said cordless telephone set via said transmitting section means, and executes originating connection.
Claim 7
Dependent Claim
186 words
A cordless telephone set for use in a cordless telephone apparatus, comprising: signal generating section means for generating an originating call signal and a terminating response signal; receiving section means for receiving a terminating call signal and an originating answer signal from a connecting unit of said cordless telephone apparatus; carrier sensing circuit means included in said receiving section means; transmitting section means; a handset; and control section means for designating a control channel on on-hook of said handset and, when said second carrier sensing circuit produces a "NO CARRIER" output indicating that a carrier does not exist on said designated control channel, sending an originating call signal via said transmitting section means and executing originating connection, said control section comprising originating connection priority processing means for controlling, even when said carrier sensing circuit means produces a "CARRIER" output indicating that a carrier exists on said designated control channel, said signal generating section means to send an originating call signal to said connecting unit via said transmitting section means if a terminating call signal with a coincident identification signal is received from said receiving section means.
Claim 8
Dependent Claim
186 words
A cordless telephone set for use in a cordless telephone apparatus, comprising: signal generating section means for generating an originating call signal and a terminating response signal; receiving section means for receiving a terminating call signal and an originating answer signal from a connecting unit of said cordless telephone apparatus; carrier sensing circuit means included in said receiving section means; transmitting section means; a handset; and control section means for designating a control channel on on-hook of said handset and, when said second carrier sensing circuit produces a "NO CARRIER" output indicating that a carrier does not exist on said designated control channel, sending an originating call signal via said transmitting section means and executing originating connection, said control section comprising originating connection priority processing means for controlling, even when said carrier sensing circuit means produces a "CARRIER" output indicating that a carrier exists on said designated control channel, said signal generating section means to send an originating call signal to said connecting unit via said transmitting section means if a terminating call signal with a coincident identification signal is received from said receiving section means.
Claim 9
Dependent Claim
202 words
A cordless telephone apparatus comprising a connecting unit connected to a telephone channel, and a cordless telephone set connectable to said connecting unit over a radio channel, said cordless telephone set turning on a transmission output on confirming "NO CARRIER" on a control channel and connecting said radio channel only on confirming that the identification signals of said cordless telephone set and said connecting unit are coincident; said connecting unit comprising terminating call signal priority sending means for sending a terminating call signal to said cordless telephone set prior to the execution of an originating answer signal transmission procedure when, in the even of call termination, a "CARRIER" condition of said control channel is detected and an originating call signal with a coincident identification signal is received from said cordless telephone set; said cordless telephone set comprising terminating response signal priority sending means for sending a terminating response signal prior to the execution of an originating connection procedure when, in the event call origination and during an interval between off-hook and reception of an originating answer signal from said connecting unit, a "CARRIER" condition is detected and a terminating call signal with a coincident identification signal is received from said connecting unit.
Claim 10
Dependent Claim
202 words
A cordless telephone apparatus comprising a connecting unit connected to a telephone channel, and a cordless telephone set connectable to said connecting unit over a radio channel, said cordless telephone set turning on a transmission output on confirming "NO CARRIER" on a control channel and connecting said radio channel only on confirming that the identification signals of said cordless telephone set and said connecting unit are coincident; said connecting unit comprising terminating call signal priority sending means for sending a terminating call signal to said cordless telephone set prior to the execution of an originating answer signal transmission procedure when, in the even of call termination, a "CARRIER" condition of said control channel is detected and an originating call signal with a coincident identification signal is received from said cordless telephone set; said cordless telephone set comprising terminating response signal priority sending means for sending a terminating response signal prior to the execution of an originating connection procedure when, in the event call origination and during an interval between off-hook and reception of an originating answer signal from said connecting unit, a "CARRIER" condition is detected and a terminating call signal with a coincident identification signal is received from said connecting unit.
Claim 11
Dependent Claim
114 words
A telephone apparatus as claimed in claim 6, wherein said terminating call signal priority sending means comprises: a signal generating section for generating the terminating call signal and the originating answer signal; a receiving section for receiving an originating call signal with a coincident identification signal and the terminating response signal from said cordless telephone set; a carrier sensing circuit included in said receiving section; and a control section for sending the terminating call signal from said first signal generating section via said first transmitting section when said carrier sensing circuit produces a "CARRIER" output associated with said control channel and said receiving section receives the originating call signal with a coincident identification signal.
Claim 12
Dependent Claim
109 words
A telephone apparatus as claimed in claim 6, wherein said terminating response signal priority sending means comprises: a signal generating section for generating the originating call signal and the terminating response signal; a receiving section for receiving a terminating call signal with a coincident identification signal and the originating answer signal from said connecting unit; a transmitting section; and a control section for sending the terminating response signal from said second signal generating section via said transmitting section when, in the event when a call is originated on said cordless telephone set and during an interval between off-hook and reception of the originating answer signal by said receiving section.
Claim 13
Dependent Claim
29 words
A telephone apparatus as claimed in claim 6, wherein said connecting unit and said cordless telephone set are connected by said control channel and a plurality of voice channels.
Claim 14
Dependent Claim
26 words
A telephone apparatus as claimed in claim 6, wherein a wire telephone set is connected to the telephone channel to which said connecting unit is connected.
Claim 15
Dependent Claim
211 words
A connecting unit for use in a cordless telephone apparatus, comprising: call incoming detecting circuit means for detecting a call incoming signal from a telephone channel; signal generating section means for generating a terminating call signal and an originating answer signal; receiving section means for receiving an originating call signal and a terminating response signal from a cordless telephone set over a designated control channel; carrier sensing circuit means included in said receiving section means; transmitting section means; and control section means for designating a control channel when said call incoming detecting circuit means detects a call incoming signal and, when said carrier sensing circuit means produces a "NO CARRIER" output indicating that a carrier does not exist on said designated control channel, sending a terminating call signal from said signal generating section means via said transmitting section means, said control section means comprising terminating call priority processing means for sending, even when said carrier sensing circuit means produces a "CARRIER" output, the terminating call signal from said signal generating section means via said transmitting section means if an originating call signal with a coincident identification signal is received by said receiving section means and, thereafter, executing terminating connection when a terminating response signal is received via said receiving section. means.
Claim 16
Dependent Claim
211 words
A connecting unit for use in a cordless telephone apparatus, comprising: call incoming detecting circuit means for detecting a call incoming signal from a telephone channel; signal generating section means for generating a terminating call signal and an originating answer signal; receiving section means for receiving an originating call signal and a terminating response signal from a cordless telephone set over a designated control channel; carrier sensing circuit means included in said receiving section means; transmitting section means; and control section means for designating a control channel when said call incoming detecting circuit means detects a call incoming signal and, when said carrier sensing circuit means produces a "NO CARRIER" output indicating that a carrier does not exist on said designated control channel, sending a terminating call signal from said signal generating section means via said transmitting section means, said control section means comprising terminating call priority processing means for sending, even when said carrier sensing circuit means produces a "CARRIER" output, the terminating call signal from said signal generating section means via said transmitting section means if an originating call signal with a coincident identification signal is received by said receiving section means and, thereafter, executing terminating connection when a terminating response signal is received via said receiving section. means.
Claim 17
Dependent Claim
188 words
A cordless telephone set for use in a cordless telephone apparatus, comprising: signal generating section means for generating an originating call signal and a terminating response signal; receiving section means for receiving a terminating call signal and an originating answer signal from a connecting unit; carrier sensing circuit means included in said receiving section means; transmitting section means; a handset; and control section means for designating a control channel on off-hook of said handset, sending an originating call signal via said transmitting section means when said carrier sensing circuit means produces a "NO CARRIER" output indicating that a carrier does not exist, and executing originating connection when said receiving section means receives an originating answer signal, said control section means comprising terminating call priority processing means for sending a terminating response signal from said signal generating section means via said transmitting section means when, during an interval between off-hook of said handset and reception of the originating answer signal, said carrier sensing circuit means produces a "CARRIER" output associated with said control channel and said receiving section means receives a terminating call signal with a coincident identification signal.
Claim 18
Dependent Claim
188 words
A cordless telephone set for use in a cordless telephone apparatus, comprising: signal generating section means for generating an originating call signal and a terminating response signal; receiving section means for receiving a terminating call signal and an originating answer signal from a connecting unit; carrier sensing circuit means included in said receiving section means; transmitting section means; a handset; and control section means for designating a control channel on off-hook of said handset, sending an originating call signal via said transmitting section means when said carrier sensing circuit means produces a "NO CARRIER" output indicating that a carrier does not exist, and executing originating connection when said receiving section means receives an originating answer signal, said control section means comprising terminating call priority processing means for sending a terminating response signal from said signal generating section means via said transmitting section means when, during an interval between off-hook of said handset and reception of the originating answer signal, said carrier sensing circuit means produces a "CARRIER" output associated with said control channel and said receiving section means receives a terminating call signal with a coincident identification signal.
References Cited (Backward Citations)
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