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JP3224132B2 |
Speech is distinguished from noise by a spectral comparison of an input signal with a stored noise estimate. Updating of the noise estimate stored in a buffer is permitted during periods when speech is absent under control of an auxiliar...
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JP2001519591A |
An organic electroluminescent material is sealed within the outer housing of a portable radio telephone along with the control grids to cause the material to luminesce in a pixilated pattern. The pixels are controlled to generate a visua...
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JP3220136B2 |
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JP3220497B2 |
PURPOSE: To provide the multi-functional telephone set in which low power consumption is realized through jointly using a solar battery. CONSTITUTION: Electric equipment sections such as an internal telephone set circuit 6 and a display ...
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JP3218538B2 |
A fiber optic/coaxial cable telephony network including power. Power is supplied through the coaxial cable portion of the video network to an cable network unit where the power is converted and supplied to the equipment including custome...
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JP3219839B2 |
PURPOSE: To provide the electronic interface circuit placed between a telephone subscriber line and a main exchange station that has advantages of a balanced circuit and an unbalanced circuit. CONSTITUTION: The interface circuit includes...
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JP2001285533A |
To prevent an inverse current to a DC constant voltage generation circuit for supplying a stable DC voltage b detecting the inverse current to the DC constant voltage generation circuit at the operation of a ringer circuit used in an opt...
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JP2001274737A |
To realize a method for quickly and properly interrupting an idle state of a communication unit. This method is for interrupting idle state of a communication unit in a communication system, especially in a wireless communication system....
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JP2001268277A |
To provide a network connector that can properly supply power to a telephone set.A current regulator 15 controls power to be supplied to a telephone set 4, by adjusting a current to be supplied from a feed circuit 14 to the telephone set...
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JP2001268171A |
To secondarily satisfactorily report call incoming except for an incoming melody in a portable telephone.On the basis of first-fourth sound source data of the incoming melody, a sound source pulse is outputted to a sounding drive 133 (st...
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JP2001267954A |
To provide a portable mobile terminal that can surely inhibit sounding by a sounding means at a place where a sounding inhibit mode is to be set.The portable mobile terminal is provided with the sounding means 7, a reception means 2 that...
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JP2001268187A |
To provide a call tone ringing system that ensures a sound pressure and a reduced current of a speaker drive amplifier while employing a small-sized battery with a low capacity.The call tone ringing system for a flip type mobile phone ha...
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JP3212555B2 |
To actualize the electronized inductance circuit of simple constitution which has smaller power consumption than usual. In electronized inductance circuits 90-1 and 90-2, two uncontrolled ends of transistors Tr-1 and Tr-2 and a 1st resis...
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JP2001257773A |
To provide a method and device that can reduce distortion of digital data by a POTS(Plain Old Telephone service) cal signal of a phone signal sent at the same time when the digital data are sent through a single line.In order to reduce d...
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JP2001515676A |
An incoming call alert system for use with a portable communication device is disclosed as including an accessory unit physically separate from the portable communication device for providing an alerting signal, a wireless link between t...
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JP2001250377A |
To provide an electronic equipment in which transition to a energy saving mode can be performed independently of stored contents of a DRAM such as whether significant stored contents exists or not, and the like, by backing up a DRAM by a...
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JP2001251783A |
To control operation by accurately detecting momentary short power interruption.A power source control circuit 12 sets a momentary power interruption signal, to be sent to a momentary power interruption counter 13 from an 'L' to an 'H' f...
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JP3206901B2 |
To connect a telephone set and an exchange device by an analog two-wire system, to turn the exchange device to simple constitution and to provide a telephone set capable of call origination permission of trunk line call origination and m...
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JP2001237996A |
To realize a long life in a backup battery and high reliability in a system at a low cost in a method for constituting the backup battery circuit of an ISDN terminal.In the terminal, the backup battery 1, the first contact point 6 and th...
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JP2001237746A |
To improve an ADSL transceiver for preventing failure of an existing telephone line.The signals are received via a hybrid circuit 220 and then are transmitted to a gain switching circuit 204 connected to the circuit 220. The electric pow...
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JP2001237970A |
To provide an incoming call sound data distributing system by which the burden of a communication charge when incoming call sound data is downloaded is reduced.A portable telephone set 1 performs access to a database 23 via a base statio...
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JP2001237995A |
To efficiently charge an electrolytic capacitor by obtaining a power source from a telephone line when it is opened.A charging circuit 31 is provided with a transistor 31Q for short-circuiting the both ends of a high resistance 31R in pa...
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JP2001237981A |
To perform various kinds of necessary processings only by a power source liquid from a telephone line without reducing a function or convenience.In a CPU 10, a clock mode is selected in a stand-by state and a program processing operation...
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JP2001512937A |
Methods and apparatus for conserving power in terminal units (100) that transmit and receive modulated data over a communication loop (120) that is shared with voiceband telephone equipment are disclosed. The methods include monitoring t...
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JP2001231154A |
To provide a feed protection system power supply circuit that can be simply reset automatically, and at the same time generates only a small amount of heat.An overcurrent detection part 17 detects that a current flowing to a load part is...
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JP2001230890A |
To provide a gateway that can transmit an audible tone, which is equal to that sent by a subscriber exchange in a public line to a caller side, to a caller side communication terminal in response to a communication state of a called part...
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JP3200508B2 |
PURPOSE: To perform the integration of office termination circuits and to share it in the both of a telephone service and an ISDN service by providing a normal reverse switch generating positive or negative voltage and changing the polar...
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JP2001223773A |
To reduce the power consumption of a mobile communication terminal device equipped with a display device.The energy is saved by arranging a controller 6 so as to disconnect at least part of the display device 1 depending upon an importan...
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JP3197402B2 |
PURPOSE: To measure the line resistance of a subscriber circuit, connected to a subscriber terminal through a subscriber line, with high precision by using a small fed current, to hold a speech signal level constant according to the meas...
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JP2001217893A |
To provide a line terminator connected to a data line, which eliminates the need for a capacitor of a large capacitance.The line terminator is provided with a power switch that has power contacts turning on/off power and ground contacts ...
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JP2001217961A |
To provide an inexpensive and small-sized digital line terminator by omitting a feeding circuit to a terminal in a standby state so as to simplify the circuit configuration including that of a peripheral circuit.In the digital line termi...
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JP2001217907A |
To provide a method and a system by which ringing information having been selected in advance by a caller user can selectively be sent to a receiver side user so as to inform the receiver side user about a call point and the importance o...
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JP2001218269A |
To solve the problem where a conventional portable phone has been inconvenient because a user has to carry a conventional portable phone of notifying the arrival of calls by means of a vibrator with its body at all times and a reply in v...
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JP3194936B2 |
Monitoring equipment is provided in a charging rectifier for operational monitoring of a converter supplied by the AC voltage supply network and is provided with DC voltage feed via two rectifiers serving the purpose of decoupling, in pa...
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JP2001211262A |
To provide an interphone system that can supply power to a transmission circuit of a doorphone salve unit only at, call times between an interphone master unit and the doorphone slave unit.The interphone system is provided with the inter...
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JP2001510306A |
A telephone has a receiver, a transmitter, a control interface, an audio processor and a microprocessor. The audio processor includes a digital signal processor, an input audio unit coupled to a microphone, an output audio unit coupled t...
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JP2001203827A |
To provide a telephone system, in which frequency multiplexed analog telephone signal and digital data signal are transmitted via a line 3. An incoming call is reported to a client private facility 2 by a call instruction signal, having ...
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JP2001203822A |
To provide a device, with which a sales company can electronically, inexpensively and freely send the catalog of selling articles on the agreement of a customer. Concerning remote control communications equipment 3 interposed between a t...
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JP2001203779A |
To provide mobile communication terminal equipment ringing incoming sound and mail reception sound by various tones, and to provide an incoming sound ringing method. A portable telephone set 1 being mobile communication terminal equipmen...
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JP3191171B2 |
PURPOSE: To attain the miniaturization and light weight of a main device by suppressing the temporary increase of current consumption by stopping charge by a charge means when the current consumption is increasing. CONSTITUTION: It is as...
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JP3191037B2 |
To set a sound volume of a reception tone and an incoming call tone properly automatically depending on the change in outdoor and indoor environmental states. The sound volume setting device for a portable telephone set making communicat...
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JP2001197225A |
To perform normal power supply and reversed power supply to a subscriber line with an economical configuration and with power consumption reduced. This circuit consists of a reversing switch 2 and a common power supply 3, and the economi...
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JP2001196964A |
To provide a receiver for a transmitter-receiver that operates a vibration motor upon the first reception of a proper reception signal so as to raise the attention of a receiver side and smoothes a speech by inhibiting the driving of the...
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JP2001197159A |
To provide a portable telephone set in which an incoming tone is changed by time and that is not boring. Inside a ROM 12, a plurality of music data of the same melody but different arrangement are stored corresponding to time zones. When...
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JP2001197226A |
To use poser that is equal to or more than power which can be supplied from an external device by making the power supply capacity of a secondary battery small while insuring the operating time of a portable radio terminal device and sup...
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JP3189054B2 |
A subscriber apparatus having working ringer generators and a standby ringer generator which is alternately used when there is a fault, wherein provision is made of a traffic monitoring unit which continuously monitors the traffic of cal...
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JP3188287B2 |
PURPOSE: To obtain an inexpensive service tone generating circuit whose constitution is simple, and also. CONSTITUTION: From a storage device 103, service tone data and address data are outputted in response of a signal from a timing sig...
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JP3186643B2 |
To surely signal an incoming call to a user from a charger when the incoming call arrives with a portable radio equipment set on the charger. This device consists of a portable radio equipment 1 and a charger 2 that charges the equipment...
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JP3185146B2 |
An active impedance line interface circuit for connection to a two-wire telephone line comprises tip and ring unity gain d.c. amplifiers having outputs d.c. coupled via feed resistors to tip and ring wires respectively. Loop current and ...
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JP3183257B2 |
To provide the subscriber circuit for a public telephone set by which a voice signal led to a channel filter is not decreased. A voltage holding circuit 7 is controlled by a polarity inversion instruction signal 8 the same as that fed to...
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