JPH0456530A - Wrist watch type portable radiotelephone set - Google Patents
Wrist watch type portable radiotelephone setInfo
- Publication number
- JPH0456530A JPH0456530A JP2167632A JP16763290A JPH0456530A JP H0456530 A JPH0456530 A JP H0456530A JP 2167632 A JP2167632 A JP 2167632A JP 16763290 A JP16763290 A JP 16763290A JP H0456530 A JPH0456530 A JP H0456530A
- Authority
- JP
- Japan
- Prior art keywords
- earphone
- enclosure
- wristwatch
- housing
- telephone
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 210000000707 wrist Anatomy 0.000 title 1
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Transceivers (AREA)
- Telephone Set Structure (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、無線基地局と移動体間を双方向で無線通信す
る腕時計型の携帯用無線電話機に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a wristwatch-type portable wireless telephone that performs bidirectional wireless communication between a wireless base station and a mobile object.
（ロ）従来の技術
従来、無線基地局と移動体間を双方向で無線通信するシ
ステムの代表例として、自動車電話のシステムがある。(b) Prior Art Conventionally, a car telephone system is a typical example of a system for bidirectional wireless communication between a wireless base station and a mobile object.
自動車電話の移動端末の構成及び形状は、例えば昭和６
０年２月１０日社団法人電子通信学会より発行された「
自動車電話」（Ｐ２Ｏ３）に記載されているように送受
話器としてスピーカとマイクが筐体の上部と下部に配さ
れ、フックスイッチはキー操作により行う構成になって
いる。このような移動体端末機の構成について、第７図
及び第８図を参照して説明する。The structure and shape of a mobile terminal of a car phone is, for example,
Published by the Institute of Electronics and Communication Engineers on February 10th,
As described in ``Car Telephone'' (P2O3), a speaker and a microphone are arranged as a handset at the top and bottom of the housing, and the hook switch is operated by key operation. The configuration of such a mobile terminal will be explained with reference to FIGS. 7 and 8.
第７図は従来の移動体端末機の概略構成を示す回路ブロ
ック図であり、同図において、無線基地局から送信され
た電波は、アンテナ（２５）で受信された後、無線回路
部（２４）で復調されて制御データと音声信号に分けら
れる。制御データは制御回路部（２１）で処理される。FIG. 7 is a circuit block diagram showing a schematic configuration of a conventional mobile terminal. In the figure, radio waves transmitted from a wireless base station are received by an antenna (25), and then received by a wireless circuit section (24). ) and separated into control data and audio signals. The control data is processed by the control circuit section (21).
また、キーボード（２０）からのキー人力データと表示
器（１９）へ表示する電話番号データなどについても制
御回路部（２１）で処理される。受信音声信号は音声処
理回路（２２）を介して受話器すなわちスピーカ（１７
）より放出される。送信音声は送話器、即ちマイクロホ
ン（１８）より入力され、音声処理回路（２２）、無線
回路部（２４）を介して指定された無線チャンネルで変
調され、アンテナ（２５）より送出される。Furthermore, the control circuit unit (21) processes key data input from the keyboard (20) and telephone number data displayed on the display (19). The received audio signal is sent to the handset or speaker (17) via the audio processing circuit (22).
). Transmission voice is input from a transmitter, that is, a microphone (18), is modulated on a designated wireless channel via a voice processing circuit (22) and a radio circuit section (24), and is sent out from an antenna (25).
以上の動作を行う携帯型無線機として現在、第８図に示
される形状を有する物が大部分を占めている。第７図に
示すような携帯型無線機を用いて通話を行う場合には、
まず、キーボード（２ｏ）のフックスイッチ（Ａ、Ｂ、
Ｃいずれかのキーを使用）を押し、通話相手の番号を入
力する。この時入力した番号は表示！ （１９）に表示
される。Currently, most of the portable radio devices that perform the above operations have the shape shown in FIG. When making a call using a portable radio device as shown in Figure 7,
First, hook switches (A, B,
C) and enter the number of the other party. The number you entered at this time will be displayed! (19) is displayed.
通話が成立した場合、相手の音声はスピーカ（１７）か
ら放出され、送信音声はマイクロホン（１８）より入力
される。このため、この無線装置全体を通常の送受話器
のように持ち上げる必要がある。When a call is established, the other party's voice is emitted from the speaker (17), and the transmitted voice is input from the microphone (18). Therefore, it is necessary to lift the entire wireless device like a normal handset.
このように、従来の携帯型無線機では、通話に先だって
フックスインチ用のキーを押す必要があり、また、スピ
ーカを使用して相手の音声を伝えるため消費電力の低減
に関しても限界がある。更に、無線機自体の重量を軽く
して通話中の椀の負担を軽くしても、常に片手は携帯型
無線機を持つため、両手が自由にならないという問題が
ある。As described above, in conventional portable wireless devices, it is necessary to press a hook key before making a call, and there is also a limit to the reduction in power consumption because a speaker is used to transmit the voice of the other party. Furthermore, even if the weight of the radio device itself is reduced to reduce the burden on the user during a call, there is a problem in that both hands are not free because one hand is always holding the portable radio device.
（ハ）発明が解決しようとする課題
上記自動車電話システムの携帯型無線機では、低消費電
力化を行い、小型・軽量化を行う場合、受話器としてス
ピーカを用いているため、腕時計サイズ等、より一層の
小型化が困難になるという問題がある。(c) Problems to be Solved by the Invention In the portable radio device of the above-mentioned car telephone system, when reducing power consumption and making it smaller and lighter, since a speaker is used as a receiver, it is smaller than the wristwatch size etc. There is a problem that further miniaturization becomes difficult.
（ニ）課題を解決するための手段
上記問題に鑑み、本発明は受話器部分をイヤホンで構成
し、イヤホンの脱着により電話機のフックスイッチを切
り換える機構を採用することにより、腕時計サイズの超
小型携帯用無線通信装置を提供するものである。(d) Means for Solving the Problems In view of the above problems, the present invention consists of an earphone in the handset part, and employs a mechanism that switches the hook switch of the telephone by attaching and detaching the earphones. A wireless communication device is provided.
（ホ）作用
本発明によれば、腕時計サイズの無線機においてイヤホ
ンの脱着動作により電話機のフックスイッチを兼用でき
、通話に際してのフック操作が省略できる。(E) Function According to the present invention, a wristwatch-sized radio device can also be used as a telephone hook switch by attaching and detaching an earphone, and the hook operation can be omitted when making a call.
また、フスピー力による受話回路に比べて消費電力が少
なくて済むため、装置全体としての低消費電力化が行え
る。In addition, since the power consumption is lower than that of a receiving circuit using the FSP power, the power consumption of the device as a whole can be reduced.
さらに、腕時計のバンド止め具に２本のアンテナを兼用
することにより、ダイバーシチ受信が可能である。Furthermore, diversity reception is possible by using two antennas on the watch band stopper.
（へ）実施例
次に、本発明の一実施例を図面、特に第１図から第６図
に従って詳細に説明する。(F) Embodiment Next, an embodiment of the present invention will be described in detail with reference to the drawings, particularly FIGS. 1 to 6.
第１図は、本発明による腕時計型携帯用無線電話機の内
部を示す概略図、第２図はその回路の基本的なブロック
図、また第３図はダイバーシチ受信のためのアンテナ選
択回路を付加したときのブロック図である。第４図（イ
）（ロ）（ハ）は、腕時計型携帯無線電話機の外観を表
すための正面図、並びに左右側面図である。第５図及び
第６図は、受話器部であるイヤホンの収納部分を示す要
部拡大断面図である。Fig. 1 is a schematic diagram showing the inside of a wristwatch-type portable radio telephone according to the present invention, Fig. 2 is a basic block diagram of the circuit, and Fig. 3 is an additional antenna selection circuit for diversity reception. FIG. FIGS. 4(a), 4(b), and 4(c) are a front view and left and right side views showing the appearance of the wristwatch type portable radio telephone. FIGS. 5 and 6 are enlarged cross-sectional views of essential parts showing the earphone housing part, which is the receiver part.
第１図において受話器としてのイヤホン（ｌａ）は筐体
側面部に設けた収納凹部（１）に収納されており、通話
時においては筐体より取り外して用いられる。イヤホン
（１ａ）と筐体間のケーブル（２）はカールケーブルを
使用し、イヤホンと同様に収納凹部（１）に収納される
。送話器としてのマイク（３）については、筐体上面右
下に設ける。また、アンテナ（４）については、筐体上
側面または、下側面にバンドの止め具と兼用して枠型ア
ンテナを配置する。尚、アンテナの放射パターンに影響
を与えないために、バンドは非金属の物を使用する。ア
ンテナは、λ／４（λ：波長）の長さが必要であるが、
１．５〜３ＧＨｚの周波数帯では２５〜５０ｍｍの長さ
となり、筐体の１辺の長さをλ／４程度とすることで、
筐体内に配置できる。特に、第２世代コードレス電話シ
ステムでは、２．６ＧＨｚ帯の周波数を利用するため、
アンテナの長さは２９ｍｍ程度になるため、現状の腕時
計の形状と大差はない。In FIG. 1, an earphone (la) serving as a handset is housed in a storage recess (1) provided on the side surface of the housing, and is removed from the housing when making a call. The cable (2) between the earphone (1a) and the housing uses a curled cable, and is stored in the storage recess (1) like the earphone. A microphone (3) serving as a transmitter is provided at the bottom right of the top surface of the housing. Regarding the antenna (4), a frame-shaped antenna is placed on the upper or lower side of the housing to serve as a band stopper. Note that the band is made of nonmetallic material in order not to affect the radiation pattern of the antenna. The antenna needs to have a length of λ/4 (λ: wavelength),
In the frequency band of 1.5 to 3 GHz, the length is 25 to 50 mm, and by making the length of one side of the housing approximately λ/4,
Can be placed inside the housing. In particular, second-generation cordless telephone systems use frequencies in the 2.6GHz band, so
The length of the antenna will be approximately 29mm, so there is not much difference in shape from the current wristwatch.
第２図に示した腕時計型携帯用無線電話機の基本的な回
路構成は、前述の第７図の従来の携帯型無線電話機と同
じであり、アンテナ（４）、無線回路（５）、制御回路
（６）、音声処理回路（７）より構成され筐体内に収め
られる。また、受話器としてのイヤホン（１ａ）、送話
器としてのマイクロホン（３）、着信を知らせる報知器
としてのアラーム（１０）、電話番号等の通話情報入力
のためのキーボード（１１）、さらに通話情報を表示す
る表示！ （１２）をもち、これら全ても筐体内に配置
する。又、電池については、交換可能とし、また２次電
池を用いる場合のため、充電用の外部入力端子（９）を
筐体側面に設ける。これにより、電池を外さずに未使用
時の充電ができると共に、外部電源からの電力供給も可
能となる。The basic circuit configuration of the wristwatch-type portable radio telephone shown in FIG. 2 is the same as that of the conventional portable radio telephone shown in FIG. 7, including an antenna (4), a radio circuit (5), and a control circuit. (6) and an audio processing circuit (7), and is housed in a housing. In addition, an earphone (1a) as a receiver, a microphone (3) as a transmitter, an alarm (10) as an alarm to notify of incoming calls, a keyboard (11) for inputting call information such as a telephone number, and further call information. Display to display! (12), all of which are also placed inside the housing. Furthermore, the battery is replaceable, and in case a secondary battery is used, an external input terminal (9) for charging is provided on the side of the housing. This allows charging when the battery is not in use without removing it, and also allows power to be supplied from an external power source.
第３図は、筐体側面にアンテナ２本と無線回路部（５）
内に選択回路（１３）を具備し、２本のアンテナのうち
受信状態の良いアンテナを選択し受信するダイバーシチ
受信を可能とする場合の構成ブロフク図を示す。第４図
（イ）において、キーボード（１１）は、必要最小限の
キー構成として、筐体上面に配置され、また同面に表示
部（１２）も設ける。表示部には、通常、制御回路部（
６）内のタイマー回路（６ａ）により、時計・カレンダ
ー表示を行っている。電話機として使用する場合、イヤ
ホン（１ａ）を収納凹部（１）より取り出すが、このと
き、後述のフックスイッチ（１４）がオンの状態となり
、フック信号が制御回路（６）に入る。このフック信号
により、ダイヤル番号、通話時間等の通話に必要な情報
を表示器で表示するように制御回路（６）内で切り替え
る。第５図は、イヤホンの脱着動作により、フックスイ
ッチを兼用する構成を示す。即ち、フックスイッチを機
械的スイッチ（１４）で行う構成例を示している。イヤ
ホンが前記側面の収納凹部（１）に収納されているとき
には、スイッチ（］４）がオフの状態で、イヤホンをそ
の収納四部（１）より取り外すと、スイッチ（１４）が
オンの状態になる。イヤホンケーブル（２）は、カール
ヶーフ゛ルを使用して収納するとき、イヤホンと同様に
収納凹部（１）に納められる。また、イヤホンのケーブ
ルのその他の収納法として、第６図に示すように、収納
凹部にドラム（１６）を設け、これに巻き付けるものも
考えられる。Figure 3 shows two antennas and a wireless circuit section (5) on the side of the housing.
A block diagram of the configuration is shown in which the antenna is equipped with a selection circuit (13) to enable diversity reception in which the antenna with the best reception condition is selected from among the two antennas. In FIG. 4(a), a keyboard (11) is arranged on the top surface of the casing as a minimum necessary key configuration, and a display section (12) is also provided on the same surface. The display section usually includes a control circuit section (
The timer circuit (6a) in 6) displays a clock/calendar. When used as a telephone, the earphone (1a) is taken out from the storage recess (1). At this time, a hook switch (14), which will be described later, is turned on and a hook signal is input to the control circuit (6). This hook signal causes the control circuit (6) to switch so that the information necessary for the call, such as the dial number and call time, is displayed on the display. FIG. 5 shows a configuration that doubles as a hook switch by attaching and detaching the earphone. That is, a configuration example in which a mechanical switch (14) is used as a hook switch is shown. When the earphone is stored in the storage recess (1) on the side, the switch (4) is in the OFF state, and when the earphone is removed from the storage part (1), the switch (14) is in the ON state. . The earphone cable (2) is stored in the storage recess (1) in the same way as the earphones when the earphone cable (2) is stored using the curled fiber. Another possible method for storing the earphone cable is to provide a drum (16) in the storage recess and wrap it around the drum (16), as shown in FIG.
従って、本発明の腕時計型携帯用無線電話機を用いて通
話する場合は、前記筐体側面がらイヤホンを取り外すと
スイッチ（１４）がオンし、無線回路部（５）の無線送
信回路（図示せず）に通電され交信可能な状態となる。Therefore, when making a call using the wristwatch type portable radio telephone of the present invention, when the earphone is removed from the side surface of the casing, the switch (14) is turned on, and the radio transmission circuit (not shown) of the radio circuit section (5) is turned on. ) is energized and becomes ready for communication.
そして、筐体上面のキーボード（１１）から入力した通
話相手の電話番号に関するデータ信号は、制御回路部（
６）、無線送信回路を経て、指定された無線チャンネル
で変調され、アンテナ（４）より送信されることになる
。また、無線基地がら送信された電波はアンテナ（４）
で受信されると、常時待機中の無線回路部（５）の無線
受信回路（図示せず）で制御信号を復調し、制御回路部
（６）を通じて、時計のアラーム（１０）を作動して呼
び出し音を発する。呼び出し音を確認したら、イヤホン
（１）を筐体側面より取り外し、スイッチ（１４）をオ
ンにすることにより、前記無線回路部（５）、並びに音
声処理回路（７）に通電して相手と交信することが可能
となる。前記第３図のようなダイバーシチ受信対応の構
成の場合、フェージング等に強く良質の受信が可能とな
る。The data signal related to the telephone number of the other party entered from the keyboard (11) on the top surface of the case is transmitted to the control circuit section (
6) The signal passes through a wireless transmission circuit, is modulated on a designated wireless channel, and is transmitted from an antenna (4). In addition, the radio waves transmitted from the wireless base are sent to the antenna (4).
When the control signal is received by the radio receiving circuit (not shown) of the radio circuit section (5), which is always on standby, the control signal is demodulated and the alarm (10) of the clock is activated through the control circuit section (6). Make a ringtone. After confirming the ring tone, remove the earphone (1) from the side of the case and turn on the switch (14) to energize the wireless circuit section (5) and the audio processing circuit (7) to communicate with the other party. It becomes possible to do so. In the case of a configuration compatible with diversity reception as shown in FIG. 3, it is possible to receive high-quality reception that is resistant to fading and the like.
（ト）発明の効果
本発明によれば、受話器をスピーカの代わりに脱着可能
なイヤホンで構成することにより、電話機のフックスイ
ッチを兼用でき、通話に際してのフック動作が省略でき
る。また、スピーカによる受話回路に比べて消費電力が
少なくてすむため、装置全体としての低消費電力化が行
える。(G) Effects of the Invention According to the present invention, by configuring the handset with a detachable earphone instead of a speaker, it can also be used as a hook switch of a telephone, and the hook operation during a call can be omitted. Furthermore, since the power consumption is lower than that of a receiver circuit using a speaker, the power consumption of the entire device can be reduced.
アンテナに関しては、λ／４（λ：波長）の長さが必要
であるが、１．５〜３ＧＨ２の周波数帯では２５〜５Ｑ
ｍｍとなり、腕時計型の筐体のベルトの止め具２箇所に
アンテナを配置することにより、ダイバーシチ受信が可
能となる。Regarding the antenna, a length of λ/4 (λ: wavelength) is required, but in the frequency band of 1.5 to 3GH2, the length is 25 to 5Q.
mm, and diversity reception is possible by placing antennas at two belt stops on the wristwatch-shaped case.
また、時計機能も有しているためアラームにより電話ス
ケジュール管理もできる。It also has a clock function, so you can manage your phone schedule with an alarm.
第１図から第６図は本発明の一実施例を示し、第１図は
腕時計型携帯用無線電話機の内部を示す概略構成図、第
２図、第３図はその回路ブロック図である。第４図（イ
） （口＞ （ハ）は、腕時計型携帯用無線電話機
のキー人力部を含めた外観を表す正面図、並びに左右側
面図である。第５図及び第６図は、受話器部であるイヤ
ホンの収納部分を示す拡大断面図である。第７図と第８
図は従来の携帯型無線装置の回路ブロック図と外観図を
示す。
（１）・・・・収納凹部、（１ａ）・・・・イヤホン、
（２）・・・・イヤホンケーブル、（３）・・マイク、
（４）−・・・アンテナ、（５） ・・・無線回路部、
（６）・・・・制御回路部、（６ａ）・・・タイマー回
路、（７）・・音声処理回路部、（８）・・・電池パッ
ク、（９） ・・・電池充電用端子、（１０）アラーム
、 （１１） −・・キーボード、（１２）・・・表示
器、（１３） −アンテナ選択回路、（１４）・・・
フックスイッチ、（１５）・・ベルト、（１６）・・イ
ヤホンケーブル収納用ドラム。1 to 6 show one embodiment of the present invention, FIG. 1 is a schematic diagram showing the internal structure of a wristwatch type portable radio telephone, and FIGS. 2 and 3 are circuit block diagrams thereof. Figure 4 (A) (C) is a front view and left and right side views showing the external appearance of the wristwatch-type portable radio telephone including the key-operated part. Figures 5 and 6 are FIG.
The figure shows a circuit block diagram and an external view of a conventional portable wireless device. (1)... Storage recess, (1a)... Earphone,
(2)... Earphone cable, (3)... Microphone,
(4) - Antenna, (5) Radio circuit section,
(6)...Control circuit section, (6a)...Timer circuit, (7)...Audio processing circuit section, (8)...Battery pack, (9)...Battery charging terminal, (10) Alarm, (11) - Keyboard, (12) Display, (13) - Antenna selection circuit, (14)...
Hook switch, (15)...belt, (16)...drum for storing earphone cables.
Claims (3)
電池を収納して、また筐体側面にバンドの止め具と兼用
するアンテナを配置し、送話器としてのマイクロホンを
筐体表面、受話器としてのイヤホンを筐体側面に備え、
通話時に筺体より取り外して用いるイヤホンの脱着動作
を電話器のフック動作と兼用させることを特徴とする腕
時計型携帯無線電話機。(1) The circuit and battery necessary for wireless communication are housed inside the wristwatch-shaped housing, and an antenna that also serves as a band stopper is placed on the side of the housing, and a microphone as a transmitter is housed in the housing. Equipped with an earphone that functions as a receiver on the side of the housing,
A wristwatch-type portable radio telephone characterized in that the operation of attaching and detaching an earphone used by removing it from a housing during a call also functions as a hook operation of the telephone.
体両側面に２本配置し、２本のアンテナの受信状態の良
い方を選択する回路を具備してダイバーシチ受信を行う
ことを特徴とする特許請求の範囲第１項記載の腕時計型
携帯用無線電話。(2) Features include two antennas placed on both sides of the casing, which also serve as wristwatch band stops, and a circuit that selects the one with the better reception condition of the two antennas to perform diversity reception. A wristwatch-type portable wireless telephone according to claim 1.
、電話機として使用する場合にのみ、表示部にダイヤル
番号、通話時間等の通話に必要な情報を表示することを
特徴とする、特許請求の範囲第１項記載の腕時計型携帯
用無線電話機。(3) A patent claim characterized in that the display section always displays a clock/calendar, and only when used as a telephone, displays information necessary for a call, such as a dial number and call time, on the display section. A wristwatch-type portable wireless telephone set forth in item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167632A JP2714229B2 (en) | 1990-06-26 | 1990-06-26 | Wrist watch type portable wireless telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167632A JP2714229B2 (en) | 1990-06-26 | 1990-06-26 | Wrist watch type portable wireless telephone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0456530A true JPH0456530A (en) | 1992-02-24 |
| JP2714229B2 JP2714229B2 (en) | 1998-02-16 |
Family
ID=15853379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2167632A Expired - Fee Related JP2714229B2 (en) | 1990-06-26 | 1990-06-26 | Wrist watch type portable wireless telephone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2714229B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06113000A (en) * | 1992-05-29 | 1994-04-22 | American Teleph & Telegr Co <Att> | List telephone |
| US5309500A (en) * | 1990-09-07 | 1994-05-03 | Nec Corporation | Apparatus for displaying time-of-day data adaptively to different time zones |
| EP0624021A2 (en) * | 1993-04-16 | 1994-11-09 | Nec Corporation | Portable telephone set with an earphone |
| WO1996021307A1 (en) * | 1995-01-06 | 1996-07-11 | Philips Electronics N.V. | Portable communication device |
| WO1998057477A1 (en) * | 1997-06-11 | 1998-12-17 | Fernandez Martinez Jose Ignaci | New bracelet telephone device |
| GB2331672A (en) * | 1997-11-25 | 1999-05-26 | Nec Corp | Producing an off-hook signal via the headset of a portable communications terminal |
| WO1999060764A1 (en) * | 1998-05-18 | 1999-11-25 | Simon John White | Hands-free device for mobile telephones |
| JP2005045531A (en) * | 2003-07-22 | 2005-02-17 | Niigata Seimitsu Kk | Portable watch telephone |
| WO2006006416A1 (en) * | 2004-07-08 | 2006-01-19 | Sony Corporation | Earphone antenna connecting device and portable wireless device |
| WO2007051911A1 (en) * | 2005-11-03 | 2007-05-10 | Wearfone Oy | Method and device for wireless sound production into user's ear |
| US7340285B2 (en) | 2004-04-19 | 2008-03-04 | Sony Corporation | Earphone antenna and portable radio equipment provided with earphone antenna |
| US7373169B2 (en) | 2004-06-04 | 2008-05-13 | Sony Corporation | Earphone antenna and portable radio equipment provided with earphone antenna |
| US8783055B2 (en) | 2010-09-10 | 2014-07-22 | Samsung Electronics Co., Ltd. | Refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109436A (en) * | 1980-11-12 | 1982-07-07 | Licentia Gmbh | Subscriber's telephone set |
| US4847818A (en) * | 1988-10-31 | 1989-07-11 | Timex Corporation | Wristwatch radiotelephone |
| JPH01113434U (en) * | 1988-01-26 | 1989-07-31 |
-
1990
- 1990-06-26 JP JP2167632A patent/JP2714229B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109436A (en) * | 1980-11-12 | 1982-07-07 | Licentia Gmbh | Subscriber's telephone set |
| JPH01113434U (en) * | 1988-01-26 | 1989-07-31 | ||
| US4847818A (en) * | 1988-10-31 | 1989-07-11 | Timex Corporation | Wristwatch radiotelephone |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309500A (en) * | 1990-09-07 | 1994-05-03 | Nec Corporation | Apparatus for displaying time-of-day data adaptively to different time zones |
| JPH06113000A (en) * | 1992-05-29 | 1994-04-22 | American Teleph & Telegr Co <Att> | List telephone |
| EP0624021A2 (en) * | 1993-04-16 | 1994-11-09 | Nec Corporation | Portable telephone set with an earphone |
| EP0624021A3 (en) * | 1993-04-16 | 1995-01-25 | Nippon Electric Co | Portable telephone set with an earphone. |
| US5511120A (en) * | 1993-04-16 | 1996-04-23 | Nec Corporation | Portable telephone set with an earphone |
| KR100394901B1 (en) * | 1995-01-06 | 2003-11-28 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | ortable communication device |
| WO1996021307A1 (en) * | 1995-01-06 | 1996-07-11 | Philips Electronics N.V. | Portable communication device |
| US5881149A (en) * | 1995-01-06 | 1999-03-09 | U.S. Philips Corporation | Portable communications device with wireless transmitter and detachable earpiece including a wireless receiver |
| WO1998057477A1 (en) * | 1997-06-11 | 1998-12-17 | Fernandez Martinez Jose Ignaci | New bracelet telephone device |
| GB2331672A (en) * | 1997-11-25 | 1999-05-26 | Nec Corp | Producing an off-hook signal via the headset of a portable communications terminal |
| US6301487B1 (en) | 1997-11-25 | 2001-10-09 | Nec Corporation | Information terminal unit incorporating cellular phone function and on/off-hook method |
| GB2331672B (en) * | 1997-11-25 | 2003-02-12 | Nec Corp | Information terminal unit incorporating cellular phone function and on/off hook method |
| WO1999060764A1 (en) * | 1998-05-18 | 1999-11-25 | Simon John White | Hands-free device for mobile telephones |
| JP2005045531A (en) * | 2003-07-22 | 2005-02-17 | Niigata Seimitsu Kk | Portable watch telephone |
| US7340285B2 (en) | 2004-04-19 | 2008-03-04 | Sony Corporation | Earphone antenna and portable radio equipment provided with earphone antenna |
| US7373169B2 (en) | 2004-06-04 | 2008-05-13 | Sony Corporation | Earphone antenna and portable radio equipment provided with earphone antenna |
| WO2006006416A1 (en) * | 2004-07-08 | 2006-01-19 | Sony Corporation | Earphone antenna connecting device and portable wireless device |
| WO2007051911A1 (en) * | 2005-11-03 | 2007-05-10 | Wearfone Oy | Method and device for wireless sound production into user's ear |
| US8783055B2 (en) | 2010-09-10 | 2014-07-22 | Samsung Electronics Co., Ltd. | Refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2714229B2 (en) | 1998-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |