GR970100251A - Συστημα ανοικτης ακροασης για συσκευες κινητης τηλεφωνιας - Google Patents

Συστημα ανοικτης ακροασης για συσκευες κινητης τηλεφωνιας

Info

Publication number
GR970100251A
GR970100251A GR970100251A GR970100251A GR970100251A GR 970100251 A GR970100251 A GR 970100251A GR 970100251 A GR970100251 A GR 970100251A GR 970100251 A GR970100251 A GR 970100251A GR 970100251 A GR970100251 A GR 970100251A
Authority
GR
Greece
Prior art keywords
mobile telephony
hand
microphone
free operation
voice
Prior art date
Application number
GR970100251A
Other languages
English (en)
Inventor
Original Assignee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by filed Critical
Publication of GR970100251A publication Critical patent/GR970100251A/el

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/385—Transceivers carried on the body, e.g. in helmets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H04M1/605—Portable telephones adapted for handsfree use involving control of the receiver volume to provide a dual operational mode at close or far distance from the user

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)
GR970100251A 1997-06-24 1997-06-24 Συστημα ανοικτης ακροασης για συσκευες κινητης τηλεφωνιας GR970100251A (el)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR97100251 1997-06-24

Publications (1)

Publication Number Publication Date
GR970100251A true GR970100251A (el) 1999-02-26

Family

ID=10943014

Family Applications (1)

Application Number Title Priority Date Filing Date
GR970100251A GR970100251A (el) 1997-06-24 1997-06-24 Συστημα ανοικτης ακροασης για συσκευες κινητης τηλεφωνιας

Country Status (1)

Country Link
GR (1) GR970100251A (el)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090042A (en) * 1975-03-24 1978-05-16 Kayce, Inc. Acoustical communications headset
WO1995034156A1 (en) * 1994-06-06 1995-12-14 The Creative Solutions Company, Inc. Cellular telephone headset
US5528689A (en) * 1994-11-07 1996-06-18 Chan; Alex Y. Telephone headset adaptor including a hearing sound tube, a speaking sound tube, a headset, a telephone ear cup and a telephone mouth cup

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090042A (en) * 1975-03-24 1978-05-16 Kayce, Inc. Acoustical communications headset
WO1995034156A1 (en) * 1994-06-06 1995-12-14 The Creative Solutions Company, Inc. Cellular telephone headset
US5528689A (en) * 1994-11-07 1996-06-18 Chan; Alex Y. Telephone headset adaptor including a hearing sound tube, a speaking sound tube, a headset, a telephone ear cup and a telephone mouth cup

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