Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Audio Signal Processing

Portable-information-terminal-device-with-radio-selective-calling-receiver

Method of transferring information between a subscriber identification module and a radiocommunication mobile terminal, and a corresponding subscriber identification module and mobile terminal

The present invention aims to propose a solution to the above problem intended to make any kind of ...

Device for forming a simulated stereophonic sound field

It is an object of the invention to provide a device for forming a sound field comprising cascade-...

Effector with integral setting of control parameters and adaptive selecting of control programs

As noted above, the conventional echo effector and the sound field effector are not designed in ...

Time-division multidirectional multiplex communication system capable of using message area in radio burst signals divided into a plurality of areas

An object of the present invention is to provide a time division multidirectional multiplex ...

Adaptive graphic equalizer and radio using same

This need and others are substantially met through provision of the audio processing device ...

Automatically switched equalization circuit

In the present invention, when an electrical connector is inserted into the subwoofer output jack, ...

Loudspeaker apparatus

It is the principal aim of the invention to provide a loudspeaker apparatus which overcomes the ...

Stereo electroacoustic transducing

What is claimed is: 1. A stereo loudspeaker system for providing good stereo imaging over a wide ...

Loudspeaker system

It is an object of the present invention to provide a loudspeaker system which increases the size ...

Method of simulating a room and/or sound impression

OF THE PREFERRED EMBODIMENTS FIG. 1a of the drawing shows a possible method of determining the ...

Portable information terminal device with radio selective-calling receiver

Details

Inventors: Tsukuda, Naoki;
Assignee: NEC Corporation (Tokyo, JP)
Primary Examiner: Eisenzopf; Reinhard J.
Assistant Examiner: Orgad; Edan
Attorney, Agent or Firm: Scully, Scott Murphy & Presser

A portable information terminal device with a radio selective-calling receiver including first and second receiver sections with first and second antennas, respectively, implements an improvement of the reception sensitivity deterioration caused by the noise of a personal computer attached to the device with any increase of the dissipation current generated by the receiver maintained at a minimum. Only when the portable information terminal device is connected to the personal computer will it operate in a diversity reception mode to implement both receiving sections, improving reception sensitivity deterioration. When the portable information terminal device is not connected to the personal computer, diversity reception is not implemented, thus permitting only one of the receiving sections to receive.

DETAILED DESCRIPTION In view of the foregoing, it is an object of the present invention to provide a portable information terminal device with a radio selective-calling receiver for improving reception sensitivity deterioration caused by the noise of the personal computer with increasing of the dissipation current controlled.
According to one aspect of the present invention, for achieving the above-mentioned object, there is provided a portable information terminal device with a radio selective-calling receiver which comprises a first and a second radio receiving sections, and control means for controlling power source of the first and the second radio receiving sections together into ON-state when the first and the second radio receiving section is connected to the computer device, meanwhile the control means for controlling power source of one of the first and the second radio receiving sections selectively into ON-state when the first and second radio receiving section is not connected to the computer device.
According to another aspect of the invention, in the above first aspect, the control means comprises means for detecting connection condition of the connector, and means for performing ON/OFF control of a power source of the first and the second radio receiving sections in accordance with detection result of the detection means, wherein the control means controls the power source of the first and the second radio receiving section together into ON-state, when the portable information terminal device is connected to the computer device and the computer device is ON-state, while the control means controls the power source of one of the first and the second radio receiving section selectively into ON-state, when the computer device is OFF-state.
According to another aspect of the invention, in the above first aspect, the control means further comprises means for detecting ON/OFF state of the power source of the computer device, and means for controlling ON/OFF control of the power source of the first and the second radio receiving section in accordance with the detection result of the detection means

Related patents

	Digital graphic equalizer An object of the invention is to remedy the major problems of prior digital graphic equalizers and, in particular, to provide an improved digital graphic equalizer ...
	Electric artificial larynx It is an object of the present invention which has been made to solve the above problem to provide an electric artificial larynx which improves operation efficiency by ...
	Audio reproducing apparatus corresponding to picture In view of such aspects, an object of the present invention is to provide an audio reproducing apparatus corresponding to a picture which localizes a position of a ...
	Electro-optical device With the above-mentioned problems with such prior arts in view, the present invention has been proposed, and its object is to provide an electro-optical device applied ...
	Method of transmitting an audio signal What is claimed is: 1. A method of transmitting an analog audio signal in digital form to be reconverted to analog form, comprising the steps of: converting an analog ...
	Hot water tank assembly The present invention provides in a first embodiment, a hot water heater for a portable dispenser containing a storage tank for containing water. The heater further ...
	Cryptographic key split combiner It is therefore an object of the present invention to provide a process and apparatus for assembling keys which provides added security against compromising a ...
	Secure mass storage system for computers In accordance with one embodiment of the present invention, it is an object of the present invention to create a rational standard for the selective encryption of ...
	Enhanced cryptographic system and method with key escrow feature It is one object of this invention to provide a commercial key escrow system that uses published algorithms, operates in a manner that inspires the users' trust and ...
	Method and corresponding system for influencing the stereo channel separation of an audiosignal A method and a radio receiver according to the present invention have an advantage in that if reception conditions fluctuate greatly or if reception interference events (...

0.004
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved