Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Patent
1996-06-03
1999-07-27
Matar, Ahmad F.
Telephonic communications
Substation or terminal circuitry
Conversion of signal form
379368, 379433, 379428, H04M 100
Patent
active
059303522
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a communication terminal apparatus, and more particularly to a communication terminal apparatus having a speech input device which includes a microphone and is arranged for movement between an on-hook position on a main shell and a call position, where a call is enabled, distanced from the on-hook position, and a controller for detecting the position of the speech input device relative to the main shell and using a detection signal to control the input and output of a speech.
BACKGROUND ART
As portable radio phone systems have widely been in service, a variety of multi-function communication terminal apparatuses are now available for communications in the systems. Such a multi-function communication terminal apparatus offers auto-dial or speed call for selecting one from a plurality of telephone numbers stored in a memory installed in the main shell and dialing it automatically, as well as registering any name and number to a list of telephone numbers in the memory.
The communication terminal apparatus for use with a portable radio phone system is of a hand-held type which is essentially required for having minimum size and weight. For the purpose, each of the conventional terminal apparatuses is equipped with a sheet type of dial keys, a highly advanced battery(s), and a state-of-art integrated circuit which all are light weight.
As every communication terminal apparatus has a transmitter and a receiver spaced from each other by a distance between the mouth and the ear, its oversize depends on the distance between the transmitter and the receiver. Commonly, the transmitter is spaced by 13.5 cm to 14.3 cm from the receiver and at an angle of 23.3 to 13.4 to the same. For minimizing the overall size of the apparatus while satisfying those requirements, the transmitter is separated in structure from the receiver; the two, transmitter and receiver, blocks of the apparatus are arranged foldable to each other. As the transmitter and receiver of the communication terminal apparatus remain folded down when not used, their dimensions are minimized to a so-called pocket size. When a call is made, the transmitter and receiver are opened up to the mouth-to-ear distance.
DISCLOSURE OF THE INVENTION
It is an object of the present invention to provide a communication terminal apparatus having a main shell minimized in size and weight and adapted for performing multiple functions.
It is another object of the present invention to provide a communication terminal apparatus having multi-function controls without increasing the number of control keys, thus minimizing the overall size of its main shell.
It is a further object of the present invention to provide a communication terminal apparatus improved in the operability by controlling the input and output of voice signals during a call with the use of movements of a transmitter module which acts as a speech input means and is arranged movable relative to a main shell.
It is a still further object of the present invention to provide a communication terminal apparatus capable of informing a calling party at the other end of the line that the line remains connected while a voice signal is being muted, thus ensuring smooth transmission and receiving actions.
It is a still further object of the present invention to provide a communication terminal apparatus capable of muting voice signals of a transmitter or receiver module during a call to prevent transmission or receiving of unwanted voice sounds thus increasing the effectiveness of transmission and receiving actions.
For achievement of the above object, a communication terminal apparatus according to the present invention comprises: a speech input means arranged movable from a position adjacent to a main shell to a position distanced from the main shell for calling; a speech output means for reproducing a received signal as an audible sound; a detector means for detecting the position of the speech input means; and a controller means responsive to a detection signal fro
REFERENCES:
patent: 4427847 (1984-01-01), Hofmann et al.
patent: 5007081 (1991-04-01), Schmuckal et al.
patent: 5504813 (1996-04-01), Takasaki
Hsieh Shih-Wen
Maioli Jay H.
Matar Ahmad F.
Sony Corporation
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