Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
1998-06-05
2002-06-18
Chin, Vivian (Department: 2682)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S552100, C455S561000
Reexamination Certificate
active
06408194
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a method for identifying various operating modes of an electrical apparatus specific to the telecommunication field.
2. Description of the Related Art
Electrical apparatuses which may assume different operating modes from an original mode include, for example, mobile telecommunication equipment. Telecommunication equipment may be designed as cordless mobile parts in accordance with the DECT/GAP Standard (Digital European Cordless Telecommunication; see (1): Nachrichtentechnik Elektronik [Telecommunications Electronics] 42 (1992, January/February), No. 1, Berlin, DE; U. Pilger: “Struktur des DECT-Standards” [Structure of DECT Standard], pages 23 to 29; (2): Philips Telecommunication Review, Vol. 49, No. 3, September 1991; R. Mulder: “DECT Universal Cordless Access System”, pages 68 to 73;/Generic Access Profile; see ETSI-Publication prETS 300444, April 1995, Final Draft, ETSI, FR) or as mobile radio mobile parts in accordance with the GSM Standard (Groupe Spéciale Mobile oder Global System for Mobile Communication; see Informatik Spektrum [Information Technology Spectrum] 14 (1991) June, No. 3, Berlin, DE; A. Mann: “Der GSM-Standard—Grundlage für digitale europäische Mobilfunknetze” [The GSM Standard—Basis of digital European mobile (radio networks], pages 137 to 152). The various operating modes of the mobile telecommunication equipment are designed from standard features that are specific to the telecommunications apparatus and/or from performance features which are specific to the telecommunications apparatus.
One standard feature that is specific to the telecommunication equipment is the charging of the energy storage (for example a rechargeable battery) used in the telecommunication equipment. One performance feature that is specific to the telecommunication equipment is the “hands-free speech” and the “loudspeaker/hands-free listening”.
Reference EP-0 313 776 B1 discloses a mobile telecommunications apparatus (cordless mobile part) which, with a charging shell, forms a (temporary) functional unit in such a manner that both the “battery recharging” standard feature and the “hands-free speech” and/or “loudspeaker” performance feature can be activated.
Furthermore, Reference EP-0-624 021 A2 and WO 92/00640 disclose mobile telecommunication equipment (cordless mobile parts and mobile radio handsets) which can be used to achieve the performance feature “hands-free speech”. To this extent, the mobile telecommunication equipment has an earpiece which is designed as an earphone or headset and is connected (detachably) via a cord to the handset of the telecommunication equipment. The other telecommunication-specific parts are arranged and/or contained in the handset. In order to achieve the performance feature “hands-free speech”, it is possible—according to EP-0 624 021 A2—for the handset to be mounted with the microphone and/or—according to WO 92/00640—an external microphone to be attached to the earpiece cord in the vicinity of the mouth (for example a jacket or shirt pocket), and for the earpiece to be inserted into the ear.
On the basis of the configurations of a mobile telecommunication equipment described above, a distinction is drawn between standard mobile parts and convenience mobile parts.
While standard mobile parts have only the standard feature “battery recharging”, both the standard feature “battery recharging” and the performance feature “hands-free speech” and/or “loudspeaker/hands-free listening” can be implemented in convenience mobile parts.
Examples of known circuit designs related to the invention are shown in
FIGS. 1
,
2
and
3
herein and further explained in an article published in Components 31 (1993), Issue 6, pages 215 to 218; S. Althammer, D. Brückmann, entitled “Hoch-optimierte IC's für DECT-Schnurlostelefone” [Highly optimized ICs for DECT cordless telephones], (hereinafter “Components 31 Article”).
FIG. 1
shows the basic circuit design of a standard mobile part S-MT which is used in the Siemens cordless telephone “Gigaset 951/952” (see telcom report 16 (1993), Issue 1, pages 26 and 27) and forms a (temporary) functional unit with a standard charging station S-LST for charging the energy storage (for example a rechargeable battery) which is used in the standard mobile part S-MT.
In
FIG. 1
, the circuit design consists of a first radio part S-FKT connected to a first signal processing device S-SVE. The first signal processing device includes a first signal control part S-SST designed as a burst mode controller S-BMC, and a first signal conversion part S-SUT designed as a CODEC and AD/DA converter. A first clock generator S-TG is connected to a first microcontroller S-&mgr;C designed as a central controller S-ZS. A first BOF interface S-BSS for a first operator interface S-BOF. The operator interface consists of a first keypad S-TA, a first display device S-AE, a first earpiece S-HK, a first microphone S-MF and a first bell S-TRK. A first power supply S-SV is connected to a first connection interface S-ASS for the standard charging station S-LST. The method of operation of the circuit design in
FIG. 1
is further described in the Components 31 Article cited above.
Based on reference EP-0 313 776 B1 and on the above referenced Components 31 Article,
FIG. 2
shows the principle of the circuit design of a convenience mobile part K-MT, which forms a (temporary) functional unit with a convenience charging station K-LST for charging the energy storage (for example a rechargeable battery) which is used in the convenience mobile part S-MT, and for providing the performance feature “hands-free speech” and “loudspeaker”.
In
FIG. 2
, the circuit design incorporates a second radio part K-FKT and a second signal processing device K-SVE. The signal processing device K-SVE includes a second signal control part K-SST designed as a burst mode controller K-BMC and a second signal conversion part K-SUT designed as a CODEC and AD/DA converter. A second clock generator K-TG is connected to a second microcontroller K-&mgr;C designed as a central controller K-ZS. The microcontroller K-&mgr;C also includes an analog/digital converter ADW. A second BOF interface K-BSS for a second operator interface K-BOF having a second keypad K-TA connected to the BOF interface. The second operator interface also has a second display device K-AE connected to an output of the BOF interface. The second operator interface K-BOF also has a second earpiece K-HK and a second bell K-TRK, each connected to an output of the BOF interface. A second microphone K-MF of the operator interface K-BOF is connected to a input of the BOF interface. A second power supply K-SV is connected to a second connection interface K-ASS for the convenience charging station K-LST. The principle of the method of operation of the circuit design is described in the Components 31 Article cited above.
As further described in references EP-0 624 021 A2 and WO 92/00640 and in conjunction with the Components 31 Article,
FIG. 3
shows the principle of the circuit design of the convenience mobile part K-MT according to FIG.
2
and further provides the performance feature “hands-free speech” and “hands-free listening”. In
FIG. 3
, the connection interface K-ASS is connected, preferably detachably, to a headset KSG with a headset microphone KSMF and a headset earpiece KHK.
The circuit design in
FIG. 3
shows the radio part K-FKT, the signal processing device K-SVE with the signal control part K-SST designed as a burst mode controller K-BMC, and the signal conversion part K-SUT designed as a CODEC and AD/DA converter, the clock generator K-TG, the microcontroller K-&mgr;C designed as a central controller K-ZS and having an analog/digital converter ADW, the BOF interface K-BSS for the operator interface K-BOF having the keypad K-TA, the display device K-AE, the earpiece K-HK, the microphone K-MF and the bell K-TRK, the power supply K-SV and the connection interface K-ASS for the headset KS
Appiah Charles N.
Bell Boyd & Lloyd LLC
Chin Vivian
Siemens Aktiengesellschaft
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