 Asynchronous interface for electronic musical instrument with multiplexed note selection |
| The asynchronous interface of the present invention includes two buffer memories such as random ... |
|
| Cryptographic key management and validation system |
| OF THE PRESENT INVENTION In describing the present invention, reference is made to the drawings, ... |
|
| Elastomeric dielectric polymer film sonic actuator |
| This invention relates to an acoustic actuator or loudspeaker system. More specifically, the ... |
|
| Programmable filter/equalizer for duel speed and density magnetic recording devices |
| We claim: 1. A programmable filter stage for filtering an input voltage over at least two cut-off ... |
|
| FM theta-inducing audible sound, and method, device and recorded medium to generate the same |
| OF THE INVENTION Now explaining this invention in detail in conjunction with several embodiments ... |
|
| Method and apparatus for filtering high resolution digital signals |
| The present invention will be more completely understood through the following detailed ... |
|
| Classified adaptive multiple processing system |
| The present invention provides a method, apparatus, and computer-readable medium for selectively ... |
|
| Method and apparatus for arithmetic shifting |
| OF A PREFERRED EMBODIMENT Generally, the present invention provides a method and apparatus for ... |
|
| Method and apparatus for real bar measurements |
| In accordance with the present invention, the distance of the tip of the probe tube from the ear ... |
|
| Audio feedback suppressor |
| We claim: 1. Apparatus for minimizing feedback to an acoustic to electric signal transducer of an ... |
|
|
Convertible handset/headset for telephone
| Details |
Inventors: Larkin, Wallace K.; Stevens, Toni R.;
Assignee: ACS Communications, Inc. (Scotts Valley, CA)
Primary Examiner: Ng; Jin F.
Assistant Examiner: Byrd; Danita R.
Attorney, Agent or Firm: Limbach, Limbach & Sutton
A miniature telephone handset that is convertible into a headset for use in conjunction with a telephone base unit. The telephone handset includes a housing, a microphone mounted near one end of the housing, an earphone mounted near the other end of the housing, a cable for electrically connecting the microphone and the earphone to the telephone base unit, a bushing rotatably coupled to the housing near the earphone end, and a removable headband adapted for insertion into the bushing and operable for supporting the housing next to a user's head when used as a headset. |
|
DETAILED DESCRIPTION In accordance with the illustrated preferred embodiment, the present invention provides a miniature telephone handset that is convertible into a headset, for use in conjunction with a telephone base unit.
The telephone handset includes a housing, a microphone mounted near one end of the housing, an earphone mounted near the other end of the housing, a cable for electrically connecting the microphone and the earphone to the telephone base unit, a bushing coupled to the housing near the earphone end, and a headband adapted for insertion into the bushing and operable for supporting the housing next to a user's head when used as a headset.
Preferably, the bushing is rotatably coupled to the housing and the headband is slidably coupled to the bushing, thus allowing the headband and housing to be adjusted to position the headset properly for each user.
The adjustability of the headband and bushing allows the headset to be worn on either the left side or the right side of the user's head.
In one embodiment of the invention, the headband folds away and nests against the housing during use as a handset.
Various features of the present invention combine to provide a new and useful telephone handset.
One feature is that the headset of the present invention is easily convertible between a handset configuration and a headset configuration, and can, thus, replace both the handset and add-on headset of conventional combination-type telephones.
Another feature is that the conversion between use as a handset and use as a headset is entirely mechanical, rather than through an electrical switch, for improved reliability and reduced cost.
Another feature is that the handset is lightweight because it is designed to be grasped by the user's fingers, rather than by the user's hand.
Still another feature is the adjustability of the headband, which allows the headset to be comfortably used by anyone.
A major advantage of the present invention is that, due to reduced complexity, telephones incorporating the present invention will be less costly and easier to use than telephones having separate handsets and headsets
|
| Related patents |
|
|
Headphone-convertible telephone hand set
Accordingly, to eliminate the above-mentioned shortcomings, the present invention provides a headphone-convertible telephone hand set having a receiver unit consisting ...
|
|
|
Picture transmission systems
An object of the present invention is to provide a picture transmission system in which no synchronising signals are required to be transmitted between the transmitter ...
|
|
|
Scrambler with self-calibration
In order to overcome these and other drawbacks of prior art scramblers, it is an object of the present invention to provide a self-calibrating scrambler which avoids the ...
|
|
|
Digital speech/data discriminator for transcoding unit
We claim: 1. In a transcoding unit of a telecommunication system including circuit means for respectively directing digitized samples of speech signals and of voice-band-...
|
|
|
Secret telephony
What is claimed is: 1. In a system of secret transmission of speech, means to subdivide speech waves constituting a message into a plurality of narrow frequency bands, ...
|
|
|
Marking system using elastic surface waves
The present invention relates to a marking system using elastic surface waves in which the free surface of the sheet has an area formed by roughness whose depth is ...
|
|
|
Taximeter
It is therefore an object of the invention to provide an electronic taximeter which overcomes the above difficulties. It is a more specific object of the invention to ...
|
|
|
Effect addition apparatus
It is an object of the present invention to provide an effect tone addition apparatus which can prevent generation of noise in an effect tone when a tone color parameter ...
|
|
|
Dual-processing interference cancelling system and method
Accordingly, it is an object of the present invention to provide an interference cancelling system capable of processing a broadband input without disproportionately ...
|
|
|
Tone control circuit
Thus, one object of the present invention is to provide a tone filtering circuit of the above-described type which minimizes the number of access terminals required for ...
|
|
|
Audio Signal Processing 
