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| Number | Title | Issue Date |
| 7433715 | Mobile station for telecommunications system A mobile telecommunications system has a handset and a headset for connection to the handset. The handset includes an RF transceiver for transmitting an outgoing call and receiving an incoming call, and a processor coupled to the RF transceiver that provides audio s... | 10/07/2008 |
| 7302280 | Mobile phone operation based upon context sensing A mobile device is provided that includes at least one sensor that provides contextual information to the device. When the mobile device receives an incoming message, or notification, the device responds thereto based at least in part upon the contextual information... | 11/27/2007 |
| 7289102 | Method and apparatus using multiple sensors in a device with a display In a device having a display, at least one sensor signal is generated from a sensor in the device. One or more context values are then generated from the sensor signal. The context values indicate how the device is situated relative to one or more objects. At least ... | 10/30/2007 |
| 7212842 | Portable electronic apparatus Portable electronic apparatus is disclosed having a sensor for sensing the portable electronic apparatus coupled in intimate proximity to a rest. The rest may be a desk top, car instrument panel top or a special stand for the portable electronic apparatus. The porta... | 05/01/2007 |
| 7043267 | Communication device disconnecting a communication line by detecting an abnormal state of computer equipment A communication device is constructed to include a detecting section for detecting a signal peculiar to a universal serial bus (USB) obtained via the USB, and a disconnecting section for disconnecting a line which is being used for a communication when the signal pe... | 05/09/2006 |
| 7024175 | System for masking microphonic voice signals in wired telecommunications equipment A system to thwart eavesdropping on microphonic audio signals generated by a powered telecommunications device connected to a communications line, comprising a noise generator for applying low level noise to the line, thereby masking microphonic audio signals, and a... | 04/04/2006 |
| 6980645 | Low-pass filtering device with integrated insulator and private installation comprising same A filtering device for a narrow-band terminal in a private installation connected to an access network carrying narrow-band services (analogue or ISDN) and broad-band services (xDSL or HomePNA). The device has a low-pass filter associated with an insulation enabling... | 12/27/2005 |
| 6959083 | Loop current monitor circuitry and method for a communication system An audio signal processor which modifies audio signal components outside the conventional audio frequency band. The processor includes a Delta Sigma Modulator (DSM) that receives a non-interpolated digital audio signal sampled at a frequency of at least 198 kHz.... | 10/25/2005 |
| 6940968 | Telephone terminal apparatus and method A telephone apparatus comprises a first audio input device, a second audio input device, a first audio output device, and a second audio output device. The telephone apparatus is operative to couple the first audio input device and the first audio output device to a... | 09/06/2005 |
| 6751316 | Click-free muting circuit for headset A click-muting circuit for a headset microphone connected to a telephone, comprising a user operated mute switch, a click eliminator circuit connected across the microphone for gradually creating a short circuit across the microphone in response to closure of the mu... | 06/15/2004 |
| 6735453 | Automatic headset hookswitch A headset storage device includes a headset cradle, a switch and a manual override device. The headset cradle has two positions: a first position when the headset cradle is supporting a headset and a second position when the headset cradle is not supporting a headse... | 05/11/2004 |
| 6704416 | Hook switch status glitch filter A line card circuit using a pair of comparators such that the output of the first comparator is coupled to an input of the second comparator through an RC circuit. The RC circuit is tuned such that short transients, such as false pulses and false off hook... | 03/09/2004 |
| 6678374 | Tone based answer detection for IP based telephones Activating a switch by a handset where the switch is manually activated when the user wishes to answer an incoming call. While the switch is in the deactivated state, the handset transmits to a sound card within a personal computer a multi-frequency tone ... | 01/13/2004 |
| 6650751 | Answer detection for IP based telephones using passive detection Deactivating a switch in a handset when a user wishes to answer an incoming call or terminate a call. A sound card within a personal computer transmits a hook tone that is above the human hearing range to a transmitter section of the handset. When the swi... | 11/18/2003 |
| 6647248 | Cradle A cradle that secures a removable device, a body, two side surfaces and two face surface are provided on one face surface, and a movable hook is provided on the other face surface. At least one of the surfaces which has a different designation than the su... | 11/11/2003 |
| 6310955 | Methods and apparatus for enabling portable telephone handset to automatically go off-hook A system for setting a wireless handset to an offhook condition when the handset is moved during the presence of a specified condition, such as an incoming call. A signal is sent to the handset to indicate an incoming call. If the handset is moved during ... | 10/30/2001 |
| 6212276 | Hanging latch hook mechanism for telephones An apparatus sets a telephone to an on-hook state. The telephone has a base with at least one cavity forming a cradle for a handset The telephone also has a handset with an operative surface including a mouthpiece microphone and an earpiece speaker. A fir... | 04/03/2001 |
| 6192231 | Telephone apparatus A telephone apparatus connects to a telecommunications network via an exchange line. It has signal recognition for detecting and recognizing calling line identity (CLI) and called number identity (CNI) signalling transmitted over the exchange line. The ap... | 02/20/2001 |
| 6091812 | Apparatus and method for automatically switching a headset between a telephone and a second audio source An apparatus and method are disclosed for connecting a headset alternately to a telephone line and an audio device. The apparatus includes an audio connector for connecting the apparatus to the audio device, a telephone connector for connecting the appara... | 07/18/2000 |
| 6052573 | Fixed subscriber unit of wireless local loop system An off-hook/on-hook signal discriminating means 5a is provided in a control portion 5 of the FSU in order to make discrimination between a pulse dial signal and a hooking signal. When a telephone turns to an off-hook state after an on-hook state and turns... | 04/18/2000 |
| 6041119 | Handset detection device for use in telephones A handset detection device for use in telephones comprises a movable member 2, a circuit board 4, a detector 5, and a cushioning member 3. The movable member 2 has a concave portion 28 on a contact surface 2A, in which the cushioning member 3 is so fitted... | 03/21/2000 |
| 6009166 | Nitinol hookswitch actuator A hookswitch actuator including an activating mechanism which maintains the hookswitch circuit of a telephone in an "on hook" state when the activating mechanism is in a first position, or in an "off hook" state when the activating mechanism is in the sec... | 12/28/1999 |
| 5887058 | Digit parsing for a flexible dial plan capability in a telecommunications switch A telecommunications switch (12) includes a dial plan database (300) used for creating, identifying, and verifying dial plan codes and dialing sequences of a desire dial plan (100). The dial plan (100) is created through a craft terminal (201) that commun... | 03/23/1999 |
| 5835585 | Telephone on-hook and off-hook sensing systems Hook conditions of a handset of a telephone apparatus which includes a telephone apparatus base having an inside and an outside are sensed by providing a beam of radiation outside of that telephone apparatus base. The handset is placed in that beam of rad... | 11/10/1998 |
| 5784458 | Telephone having a hold function A telephone includes a telephone body, a handset and a telephone network line hold mechanism. The telephone body includes a handset cradle on which the handset is placed, a plurality of operation buttons and the like. The telephone is placed in the offhoo... | 07/21/1998 |
| 5778061 | Switching device for a telephone set with handset, switching an auxiliary device by substituting for the handset The invention concerns a switching device for a telephone set having a handset enabling an auxiliary device to be substituted for the handset. In an embodiment, the switching device includes a casing provided with at least one compartment, the compartment... | 07/07/1998 |
| 5724667 | Portable telephone having removable transducer A portable telephone includes a main body of the telephone, a transducer (preferably an earphone) contained in the main body so that it can be removed therefrom, a cord connecting the transducer and the main body, and a switching mechanism. The portable t... | 03/03/1998 |
| 5592529 | Telephone inadvertent off-hook condition detector An inadvertent-off-hook-condition detecting apparatus for use with a telephone connected to a telephone system is described. The telephone has a hookswitch which connects the voice network of the telephone system across the input lines to the telephone wh... | 01/07/1997 |
| 5391928 | Switching circuit having a reduced output impedance In a switching circuit for use in a mobile telephone device in controllably transmitting a speech signal to a radio transmission unit through an output terminal (312), a first switch (31) is controlled by a control signal which is supplied to a control te... | 02/21/1995 |
| 5337353 | Capacitive proximity sensors Capacitive proximity sensors are disclosed that can be fabricated in different shapes, sizes and materials used in a wide variety of applications. Each such sensor includes a sensing electrode and a guard electrode. The sensor electrode and guard electrod... | 08/09/1994 |
| 5283546 | Vandal-resistant call box A call box (201) provides vandal-resistant operation by using a concealed magnetic switch and magnet (179) and specially locked compartments (101 and 103) in a heavy duty structure. The concealed magnetic switch determines the position of a handset (119) ... | 02/01/1994 |
| 5228075 | Telephone capable of selectively accepting callers and enabling partial recognition of callers A telephone set capable of selectively accepting callers and enabling partial recognitions of callers is disclosed, and the telephone set includes: tip and ring terminals; a first analogue switch connected to said tip terminal; a first bridge diode connec... | 07/13/1993 |
| 5168982 | Switch device The invention relates to a switch device which is suitable for use, for example, in a telephone to detect the presence of the handset (11) in the cradle (9). The switch device comprises a frame (3), a switch (4) movable in relation to the frame, and a sep... | 12/08/1992 |
| 5159628 | Hook-off detection device for a telephone handset A device for detecting the hooking off of a telephone handset from a telephone set body, comprises an elongated part (8) provided with hinges (11) rotating around a longitudinal axis (10); a key (6), constituted by a lateral extension of said part and pos... | 10/27/1992 |
| 5086452 | Radio telephone system and its control method A mobile unit is normally disposed in a predetermined positional relationship with a base unit connected to a wired line. For example, the mobile unit is mounted on the mobile-unit receiving part of the base unit. If the predetermined positional relations... | 02/04/1992 |
| 5050209 | Telephone set A telephone set having a telephone set body and a handset unit which incorporate therein a speaker amplifier and a speaker, respectively, and a coil cord interconnecting the speaker amplifier and speaker, the telephone set being selectively usable in an o... | 09/17/1991 |
| 5033083 | Telephone line switch apparatus A telephone line switch actuating mechanism includes two identical parts, each having a portion which makes up a plunger, while the remaining portion is pivotally mounted for enabling the two parts to be assembled in an opposing relationship to each other... | 07/16/1991 |
| 5007079 | Coin fraud prevention unit and modular configurations for pay telephone stations A pay telephone station having a lower housing coin chute (14) which is provided with a coin fraud prevention unit (10) in the form of a thin base (15) arranged in a slot (11) of a coin channel cover plate (12). The base (15) is provided with a pawl (23) ... | 04/09/1991 |
| 4942605 | Security handset A security device for use with a telephone handset having a microphone and an ear transducer is disclosed. It is adapted to prevent eavesdropping while the handset is in an on-hook position. The security device is comprised of switching assembly disposed ... | 07/17/1990 |
| 4922529 | Automatic hangup apparatus for restoring service to off-hook telephones The hangup apparatus uses an inadvertent off-hook detector circuit designed to detect the off-hook "howler" alert signal transmitted to a telephone by the telephone company when the telephone has been off-hook for a period of time without any user activit... | 05/01/1990 |
