JPH07177055A - Radio terminal equipment - Google Patents
Radio terminal equipmentInfo
- Publication number
- JPH07177055A JPH07177055A JP5343361A JP34336193A JPH07177055A JP H07177055 A JPH07177055 A JP H07177055A JP 5343361 A JP5343361 A JP 5343361A JP 34336193 A JP34336193 A JP 34336193A JP H07177055 A JPH07177055 A JP H07177055A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- temperature
- heat sink
- unit
- data
- 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
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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電話回線等の回線を介
してセンター装置に接続される基地局と無線接続され、
基地局を介してセンター装置にアクセスし各種の情報を
通信する無線端末装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is wirelessly connected to a base station connected to a center device through a line such as a telephone line.
The present invention relates to a wireless terminal device that accesses a center device via a base station and communicates various kinds of information.
【０００２】[0002]
【従来の技術】この種の無線端末装置は、テレターミナ
ルと呼称され、これら各テレターミナルからなるテレタ
ーミナルシステムは、図４に示すように構成されてい
る。即ち図４において、１はセンター装置、２1 〜２4
はセンター装置１と電話回線等の回線Ｌを介して接続さ
れる基地局、３1 〜３5 は基地局２1 〜２4 と無線接続
される無線端末装置である。2. Description of the Related Art A radio terminal device of this type is called a teleterminal, and a teleterminal system including these teleterminals is constructed as shown in FIG. That is, in FIG. 4, 1 is a center device, 2 1 to 2 4
Is a wireless terminal device which is the base station, 3 1 to 3 5 are wirelessly connected to the base station 21 to 24 are connected via a line L, such as the center apparatus 1 and the telephone line.
【０００３】ところでこのような無線端末装置３は、８
００ＭＨｚの無線周波数で基地局２と通信を行ってお
り、扱う対象は音声信号ではなく、データ信号である。
したがって、このような無線端末装置を各人が所持し、
センター装置１を介しメッセージをデータ信号として互
いに双方向通信して各無線端末装置の表示器上に表示す
るようにすれば、メッセージを的確に相手へ伝達するこ
とができる。このため、この無線端末装置は、受発注管
理システム，保守サービス支援システム，工事現場の情
報管理システム及び車両動態管理システム等に有効に利
用することができる。また、この無線端末装置は、可搬
型であることから電源としては電池が用いられていると
共に、送信時には遠方まで送信できるように、５Ｗ（ワ
ット）の送信電力を有している。By the way, such a wireless terminal device 3 has eight
It communicates with the base station 2 at a radio frequency of 00 MHz, and the object to be handled is not a voice signal but a data signal.
Therefore, each person has such a wireless terminal device,
If the message is bidirectionally communicated with each other via the center device 1 as a data signal and displayed on the display of each wireless terminal device, the message can be accurately transmitted to the other party. Therefore, this wireless terminal device can be effectively used for an ordering management system, a maintenance service support system, a construction site information management system, a vehicle dynamics management system, and the like. In addition, since this wireless terminal device is portable, a battery is used as a power source, and has a transmission power of 5 W (watt) so that it can be transmitted to a distant place at the time of transmission.
【０００４】[0004]
【発明が解決しようとする課題】このように従来の無線
端末装置は、送信時に大きな電力が必要であり、したが
って発生する大きな電力に伴って装置内の温度が高くな
ることから、温度の低減のために大きな放熱板が必要と
なり装置を小型化できないという問題があった。As described above, the conventional wireless terminal device requires a large amount of electric power at the time of transmission, and therefore the temperature inside the device increases with the large amount of generated electric power, so that it is possible to reduce the temperature. Therefore, there is a problem that a large heat radiating plate is required and the device cannot be downsized.
【０００５】したがって本発明は、装置内の放熱板を小
さくして装置を小型に構成することを目的とする。Therefore, an object of the present invention is to reduce the size of the heat dissipation plate in the device and to make the device compact.
【０００６】[0006]
【課題を解決するための手段】このような課題を解決す
るために、本発明は、データの送信時には大電力を消費
する送信部と、この送信部のデータ送信に基づいて発生
する熱量を拡散するための放熱板とを備え、無線接続さ
れた基地局とデータの送受信を行う無線端末装置におい
て、上記放熱板の温度上昇を検出する検出手段と、この
検出手段の検出出力に応じ送信部のデータ送信を間欠的
に制御する制御手段とを設けたものである。In order to solve such a problem, the present invention spreads a transmitting unit that consumes a large amount of power at the time of transmitting data and a heat quantity generated based on the data transmitting of the transmitting unit. In a wireless terminal device that includes a heat dissipation plate for transmitting and receiving data to and from a wirelessly connected base station, a detection unit that detects a temperature rise of the heat dissipation plate, and a transmitter of the detection unit according to the detection output of the detection unit. A control means for intermittently controlling data transmission is provided.
【０００７】[0007]
【作用】送信部のデータ送信により放熱板の温度が上昇
すると、送信部のデータ送信は間欠的に行われる。この
結果、放熱板の温度上昇が抑制できることから、放熱板
を小さくすることが可能になる。When the temperature of the heat sink rises due to the data transmission of the transmitter, the data transmission of the transmitter is performed intermittently. As a result, since the temperature rise of the heat sink can be suppressed, it is possible to reduce the size of the heat sink.
【０００８】[0008]
【実施例】以下、本発明について図面を参照して説明す
る。図１は、本発明に係る無線端末装置の一実施例を示
すブロック図である。同図において、この無線端末装置
３には、ＣＰＵ３１が設けられており、ＣＰＵ３１には
各種の表示を行うＬＣＤユニット３２、及びＡ／Ｄ変換
部３３が接続されている。ここでＡ／Ｄ変換部３３は、
タッチキー部３４からの電圧レベル信号をディジタル信
号に変換してＣＰＵ３１へ伝達する。また、タッチキー
部３４は各抵抗の集合体からなり上述のＬＣＤユニット
３２の裏面に形成されると共にこのＬＣＤユニット３２
の表面の各部が押下された時に押下箇所に応じたＸ方向
及びＹ方向の各電圧レベル信号を発生するもので、この
電圧レベル信号が上述したＡ／Ｄ変換部３３によりディ
ジタル信号に変換される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a wireless terminal device according to the present invention. In the figure, the wireless terminal device 3 is provided with a CPU 31, and an LCD unit 32 for performing various displays and an A / D converter 33 are connected to the CPU 31. Here, the A / D converter 33
The voltage level signal from the touch key unit 34 is converted into a digital signal and transmitted to the CPU 31. The touch key portion 34 is formed of a group of resistors and is formed on the back surface of the LCD unit 32 and the LCD unit 32.
It generates voltage level signals in the X direction and Y direction according to the pressed portion when each portion on the surface of is pressed, and this voltage level signal is converted into a digital signal by the A / D conversion portion 33 described above. .
【０００９】また、ＣＰＵ３１には着信時等に鳴動する
ブザー３５、時計部３６、及びモデム部３７が接続され
ている。ここでモデム部３７は、ＣＰＵ３１からのデー
タ信号を無線送受信部３８へ送って図４に示す基地局２
へ送信させると共に、無線送受信部３８を介し基地局２
からのデータ信号を受信するとこの受信データをＣＰＵ
３１へ伝達するものである。また、この無線端末装置３
は携帯型であるため、電源として電池３９が用いられ、
電源制御部４０はこの電池３９の出力電圧を変換して出
力電圧Ｖとして装置各部に供給している。なお、電池３
９の使用時間は約１２時間程であり、この時間が経過す
ると充電器５０により充電される。The CPU 31 is also connected with a buzzer 35, a clock unit 36, and a modem unit 37 that ring when an incoming call arrives. Here, the modem unit 37 sends the data signal from the CPU 31 to the wireless transmission / reception unit 38, and the base station 2 shown in FIG.
To the base station 2 via the wireless transmission / reception unit 38.
When the data signal from the
It is transmitted to 31. In addition, this wireless terminal device 3
Is a portable type, a battery 39 is used as a power source,
The power supply control unit 40 converts the output voltage of the battery 39 and supplies it as an output voltage V to each unit of the device. The battery 3
The usage time of 9 is about 12 hours, and when this time elapses, it is charged by the charger 50.
【００１０】ここでＣＰＵ３１は、Ａ／Ｄ変換部３４を
介しタッチキー部３３から操作信号を入力すると、所定
の処理を行ってその処理結果をＬＣＤユニット３２へ表
示する。そしてこの表示画面を例えば相手装置へ送信す
る場合は、相手装置を呼出した後、モデム部３７，無線
送受信部３８及びアンテナＡＴを介し、図４に示す基地
局２へこの表示画面データをパケットデータとして送信
する。この結果、表示画面データは、この送信側装置の
エリアにある基地局２及びセンター装置１を介し相手装
置と無線接続される基地局へ伝達され、さらに所望の相
手装置へ送られて表示される。また、相手装置から送信
される表示画面データは、アンテナＡＴ，無線送受信部
３８及びモデム部３７を介してＣＰＵ３１で受信され同
様にＬＣＤユニット３２上に表示される。このように本
装置は、表示画面データ等のデータ信号を相手装置と双
方向通信することができる。When the CPU 31 inputs an operation signal from the touch key section 33 via the A / D conversion section 34, the CPU 31 performs a predetermined process and displays the process result on the LCD unit 32. When this display screen is transmitted to the partner device, for example, after calling the partner device, the display screen data is transmitted to the base station 2 shown in FIG. 4 via the modem unit 37, the wireless transceiver 38 and the antenna AT as packet data. To send as. As a result, the display screen data is transmitted to the base station wirelessly connected to the partner device via the base station 2 and the center device 1 in the area of the transmission side device, and further transmitted to the desired partner device for display. . The display screen data transmitted from the partner device is received by the CPU 31 via the antenna AT, the wireless transmission / reception unit 38, and the modem unit 37, and is similarly displayed on the LCD unit 32. In this way, this device can bidirectionally communicate a data signal such as display screen data with the partner device.
【００１１】ところで、本装置の無線送受信部３８の図
示省略した送信出力トランジスタでは、送信時には約５
Ｗの電力を消費しており、送信時には多量の熱量を発生
することから、無線送受信部３８に放熱板４１を設け
て、装置内の温度が高温にならないように熱拡散を行っ
ている。しかし、装置内が高温にならないようにするた
めには放熱板４１の大きさを大にする必要があり、装置
を小型に構成できない。このため、本実施例では放熱板
４１上にその温度を検出するサーミスタ４２を設け、こ
のサーミスタ４２の検出温度をＣＰＵ３１に伝達してＣ
ＰＵ３１に送信制御を行わせることにより、装置内の温
度の上昇を防止し、かつ放熱板４１を小型化できるよう
にする。By the way, in the transmission output transistor (not shown) of the wireless transmission / reception section 38 of the present apparatus, about 5 is set at the time of transmission.
Since the electric power of W is consumed and a large amount of heat is generated at the time of transmission, a heat dissipation plate 41 is provided in the wireless transmission / reception unit 38 to perform heat diffusion so that the temperature inside the device does not become high. However, in order to prevent the temperature inside the device from becoming high, it is necessary to increase the size of the heat dissipation plate 41, and the device cannot be made compact. For this reason, in the present embodiment, a thermistor 42 for detecting the temperature is provided on the heat dissipation plate 41, and the detected temperature of the thermistor 42 is transmitted to the CPU 31 and C
By causing the PU 31 to perform transmission control, it is possible to prevent the temperature inside the device from rising and to reduce the size of the heat dissipation plate 41.
【００１２】即ち、この種の無線端末装置３では、常時
は基地局２からのデータ信号を受信する受信状態にあ
り、基地局２から指定されたタイミング信号を受信する
と、送信データがある場合は、常時は１５０ｍｓｅｃ毎
に５０ｍｓｅｃ間だけパケットデータとして送信する。
しかしこのように頻繁にデータ信号を送信していると、
無線送受信部３８から発生する熱量が大となる。このた
め、ＣＰＵ３１は放熱板４１の温度を検出する上述のサ
ーミスタ４２の出力が例えば４０゜Ｃ以上になると、無
線送受信部３８の送信処理を間引くようにモデム部３７
に指示し、例えば３００ｍｓｅｃ毎に５０ｍｓｅｃ間だ
けパケットデータの送信処理を行わせる。また、このと
きＣＰＵ３１はＬＣＤユニット３２にこの旨を表示し、
装置の扱い者に報知する。That is, the wireless terminal device 3 of this type is always in a reception state of receiving the data signal from the base station 2, and when the timing signal designated by the base station 2 is received, if there is transmission data, , Is normally transmitted as packet data every 150 msec for 50 msec.
However, when sending data signals so frequently,
The amount of heat generated from the wireless transmission / reception unit 38 becomes large. Therefore, when the output of the thermistor 42 for detecting the temperature of the heat sink 41 becomes 40 ° C. or higher, the CPU 31 thins out the transmission processing of the wireless transmission / reception unit 38 and the modem unit 37.
The packet data transmission processing is performed only for 50 msec every 300 msec. Further, at this time, the CPU 31 displays this on the LCD unit 32,
Notify the person handling the device.
【００１３】図２は、このように放熱板４１の温度に応
じて送信処理を行う送信タイミングの状況を示すタイミ
ングチャートであり、放熱板４１の温度が３９゜Ｃ以下
の低温の場合は、同図（ａ）に示すように従来通りに１
５０ｍｓｅｃ間隔毎に５０ｍｓｅｃ間だけパケットデー
タを順次を送信する。また、放熱板４１の温度が４０゜
Ｃ〜４５゜Ｃ程度の中温の場合は、図２（ｂ）に示すよ
うに３００ｍｓｅｃ間隔毎に５０ｍｓｅｃ間だけパケッ
トデータを順次送信する。また、放熱板４１の温度が５
０゜Ｃ程度の高温の場合は、図２（ｃ）に示すように、
６００ｍｓｅｃ間隔毎に５０ｍｓｅｃ間だけパケットデ
ータを順次送信する。また、放熱板４１の温度が７０゜
Ｃ程度の超高温の場合は、図２（ｄ）に示すようにスロ
ーポーリング時間内に５０ｍｓｅｃ間だけパケットデー
タを送信し、また次のスローポーリング時間では５０ｍ
ｓｅｃ間だけ次のパケットデータを送信する。FIG. 2 is a timing chart showing the situation of the transmission timing for performing the transmission processing according to the temperature of the heat dissipation plate 41 as described above. When the temperature of the heat dissipation plate 41 is a low temperature of 39 ° C. or less, the same timing chart is shown. As shown in FIG.
The packet data is sequentially transmitted for 50 msec at intervals of 50 msec. Further, when the temperature of the heat dissipation plate 41 is a medium temperature of about 40 ° C. to 45 ° C., the packet data is sequentially transmitted at intervals of 300 msec for 50 msec as shown in FIG. 2B. Also, the temperature of the heat sink 41 is 5
When the temperature is about 0 ° C, as shown in Fig. 2 (c),
Packet data is sequentially transmitted only for 50 msec at intervals of 600 msec. Further, when the temperature of the heat sink 41 is an extremely high temperature of about 70 ° C., packet data is transmitted for 50 msec within the slow polling time as shown in FIG. 2D, and 50 m for the next slow polling time.
The next packet data is transmitted only for sec.
【００１４】このスローポーリング時間とは、この無線
端末装置３が車両内で用いられ、この車両がトンネル内
に入って基地局２と通信が不可能となるような数分の時
間であり、この時間を経過しても無線端末装置３から送
信されない場合は基地局２はこの装置３の呼を強制的に
切断する。このように、放熱板４１の温度に応じて装置
の送信時間を変えることにより、放熱板４１の温度を一
定に保つことができ、かつ放熱板４１の大きさを小さく
することができる。The slow polling time is a time of several minutes such that the wireless terminal device 3 is used in a vehicle and the vehicle cannot enter the tunnel to communicate with the base station 2. If no transmission is made from the wireless terminal device 3 after a lapse of time, the base station 2 forcibly disconnects the call of this device 3. Thus, by changing the transmission time of the device according to the temperature of the heat sink 41, the temperature of the heat sink 41 can be kept constant and the size of the heat sink 41 can be reduced.
【００１５】次に図３は、この無線端末装置で実行され
る送信処理を上述の放熱板４１の温度に応じて間引くＣ
ＰＵ３１の動作を示すフローチャートである。即ち、Ｃ
ＰＵ３１は放熱板４１の温度を検出して、これが低温で
ありステップＳＴ１で「Ｙ」となる場合は、従来通りに
１５０ｍｓｅｃ毎に５０ｍｓｅｃ間パケットデータを送
信する旨をモデム部３７へ指示する。この結果、無線送
受信部３８ではモデム部３７の制御に基づきステップＳ
Ｔ２で上述のタイミングにより送信処理が行われる。Next, FIG. 3 thins out the transmission processing executed by this wireless terminal device according to the temperature of the heat dissipation plate 41 described above.
It is a flowchart which shows operation | movement of PU31. That is, C
When the PU 31 detects the temperature of the heat sink 41 and the temperature is low and the result is “Y” in step ST1, the PU 31 instructs the modem unit 37 to transmit the packet data every 50 msec for 50 msec as usual. As a result, the wireless transmission / reception unit 38 performs step S based on the control of the modem unit 37.
At T2, the transmission process is performed at the above timing.
【００１６】このように１５０ｍｓｅｃ毎に５０ｍｓｅ
ｃ間パケット送信していると、放熱板４１の温度が上昇
し、この結果ステップＳＴ３の「中温か？」の判定が
「Ｙ」となる。この場合、ＣＰＵ３１はステップＳＴ４
でモデム部３７に対し「送信処理の１回休み」を指示す
ると共に、この旨をＬＣＤユニット３２の所定の箇所に
表示する。すると、モデム部３７では無線送受信部３８
に対しステップＳＴ２で上述の３００ｍｓｅｃに５０ｍ
ｓｅｃだけ送信処理を実行させる。この結果、放熱板４
１の温度の上昇が抑制される。また、放熱板４１の温度
がさらに上昇して、ステップＳＴ３の「高温か？」の判
定が「Ｙ」となると、ＣＰＵ３１はステップＳＴ４でモ
デム部３７に対し「送信処理の３回休み」を指示すると
共に、この旨をＬＣＤユニット３２の所定の箇所に表示
する。すると、モデム部３７では無線送受信部３８に対
しステップＳＴ２で上述の６００ｍｓｅｃに５０ｍｓｅ
ｃだけ送信処理を実行させる。Thus, every 150 msec, 50 mse
During the packet transmission between c, the temperature of the heat dissipation plate 41 rises, and as a result, the judgment of "intermediate temperature?" in step ST3 becomes "Y". In this case, the CPU 31 executes step ST4.
At the same time, the modem section 37 is instructed to "pause once for transmission processing", and this is displayed at a predetermined location on the LCD unit 32. Then, in the modem unit 37, the wireless transmission / reception unit 38
On the other hand, in step ST2, 50 m in the above 300 msec.
Send processing is executed only for sec. As a result, the heat sink 4
The rise of the temperature of 1 is suppressed. Further, when the temperature of the heat dissipation plate 41 further rises and the determination of “high temperature?” In step ST3 becomes “Y”, the CPU 31 instructs the modem section 37 to “three breaks in transmission processing” in step ST4. At the same time, this is displayed at a predetermined location on the LCD unit 32. Then, in the modem section 37, the wireless transmission / reception section 38 is subjected to 50 mse in 600 msec described above in step ST2.
The transmission process is executed only for c.
【００１７】また、放熱板４１の温度がさらに上昇して
超高温となった場合は、ステップＳＴ３の判定が「Ｎ」
となる。この場合ＣＰＵ３１は、無線送受信部３８の送
信処理をさらに間引いて実行させるために、上述のスロ
ーポーリング時間に相当するタイマを起動すると共に、
このときはモデム部３７に対しては送信指示を行わな
い。また、ＬＣＤユニット３２の所定の箇所には、「装
置内の温度が上昇しているため、間欠送信を行う」旨を
表示する。そしてステップＳＴ７の「スローポーリング
５秒前？」及びステップＳＴ８における「放熱板４１温
度の中温までの下降？」を順次判断する。Further, when the temperature of the heat dissipation plate 41 further rises to an extremely high temperature, the determination in step ST3 is "N".
Becomes In this case, the CPU 31 activates a timer corresponding to the above-described slow polling time in order to further thin out and execute the transmission processing of the wireless transmission / reception unit 38, and
At this time, no transmission instruction is given to the modem unit 37. In addition, a message that “intermittent transmission is performed because the temperature inside the device is rising” is displayed at a predetermined location of the LCD unit 32. Then, "5 seconds before slow polling?" In step ST7 and "fall of the temperature of the heat sink 41 to the middle temperature?" In step ST8 are sequentially determined.
【００１８】ここで、放熱板４１の温度が中温まで下降
しないうちにスローポーリング時間の５秒前となりステ
ップＳＴ７で「Ｙ」と判定されると、ＣＰＵ３１はモデ
ム部３７に指示してステップＳＴ２で５０ｍｓｅｃ間の
送信処理を無線送受信部３８に実行させる。また、スロ
ーポーリング時間の５秒前にならないうちに放熱板４１
の温度が中温以下となりステップＳＴ８で「Ｙ」と判定
されると、ステップＳＴ３へ戻る。そしてこの場合は、
ステップＳＴ３の「中温か？」の判定が「Ｙ」となるこ
とから、上述したステップ４以降の処理を実行する。Here, before the slow polling time is reached 5 seconds before the temperature of the heat dissipation plate 41 is lowered to the medium temperature, if "Y" is determined in step ST7, the CPU 31 instructs the modem section 37 to execute in step ST2. The wireless transmission / reception unit 38 is caused to execute a transmission process for 50 msec. Also, before the slow polling time reaches 5 seconds, the heat sink 41
When the temperature becomes lower than the intermediate temperature and is determined as "Y" in step ST8, the process returns to step ST3. And in this case,
Since the determination of "is it medium temperature?" In step ST3 is "Y", the processes of step 4 and subsequent steps described above are executed.
【００１９】このように、装置内の温度上昇に応じて無
線送受信部３８における送信処理を間欠的に実行させる
ことにより、温度の上昇を抑制できると共に放熱板４１
を小型に構成することが可能になり、したがって装置の
小型化が実現できる。As described above, by intermittently executing the transmission processing in the radio transmitter / receiver unit 38 in response to the temperature rise in the apparatus, the temperature rise can be suppressed and the heat dissipation plate 41 can be suppressed.
Can be made compact, and therefore the device can be made compact.
【００２０】[0020]
【発明の効果】以上説明したように本発明によれば、送
信時に大電力を消費する送信部がデータ送信を行い装置
に設けられた放熱板の温度が上昇した場合、送信部のデ
ータ送信を間欠的に制御するように構成したので、放熱
板の温度上昇が抑制されることから、放熱板の大きさを
従来より小さくすることができ、したがって装置を小型
に構成できる。As described above, according to the present invention, when the transmitter which consumes a large amount of power at the time of data transmission performs data transmission and the temperature of the heat sink provided in the device rises, the data transmission of the transmitter is performed. Since it is configured to be controlled intermittently, the temperature rise of the heat sink is suppressed, so that the size of the heat sink can be made smaller than before, and therefore the device can be made compact.
【図１】本発明に係る無線端末装置の一実施例を示すブ
ロック図である。FIG. 1 is a block diagram showing an embodiment of a wireless terminal device according to the present invention.
【図２】上記装置のデータ送信時のタイミングを示すタ
イミングチャートである。FIG. 2 is a timing chart showing the timing of data transmission of the above device.
【図３】上記装置の動作を示すフローチャートである。FIG. 3 is a flowchart showing the operation of the above apparatus.
【図４】上記装置が適用されるテレターミナルシステム
の構成を示す図である。FIG. 4 is a diagram showing a configuration of a teleterminal system to which the above device is applied.
１ センター装置 ２1 〜２4 基地局 ３1 〜３5 無線端末装置 ３１ ＣＰＵ ３７ モデム部 ３８ 無線送受信部 ４１ 放熱板 ４２ サーミスタ ＡＴ アンテナ Ｌ１〜Ｌ４ 回線1 Center device 2 1 to 2 4 Base station 3 1 to 3 5 Wireless terminal device 31 CPU 37 Modem unit 38 Radio transmitter / receiver unit 41 Heat sink 42 Thermistor AT antenna L1 to L4 line
Claims (1)
信部と、前記送信部のデータ送信に基づいて発生する熱
量を拡散するための放熱板とを備え、無線接続された基
地局とデータの送受信を行う無線端末装置において、 前記放熱板の温度上昇を検出する検出手段と、この検出
手段の検出出力に応じ前記送信部のデータ送信を間欠的
に制御する制御手段とを設けたことを特徴とする無線端
末装置。1. A transmission unit that consumes a large amount of power when transmitting data, and a heat dissipation plate that dissipates the amount of heat generated based on the transmission of data by the transmission unit. In a wireless terminal device for transmitting and receiving, a detection unit for detecting a temperature rise of the heat sink and a control unit for intermittently controlling data transmission of the transmission unit according to a detection output of the detection unit are provided. And a wireless terminal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5343361A JP2970373B2 (en) | 1993-12-17 | 1993-12-17 | Wireless terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5343361A JP2970373B2 (en) | 1993-12-17 | 1993-12-17 | Wireless terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07177055A true JPH07177055A (en) | 1995-07-14 |
| JP2970373B2 JP2970373B2 (en) | 1999-11-02 |
Family
ID=18360929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5343361A Expired - Fee Related JP2970373B2 (en) | 1993-12-17 | 1993-12-17 | Wireless terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2970373B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6087949A (en) * | 1998-04-06 | 2000-07-11 | Nec Corporation | Method and apparatus for preventing overheat of portable telephone |
| JP2008205848A (en) * | 2007-02-20 | 2008-09-04 | Fujitsu Ltd | Transmitting device, transmitting method and transmission program |
| JP2012023766A (en) * | 2003-04-01 | 2012-02-02 | Nec Corp | Information processing terminal |
| JP2013079890A (en) * | 2011-10-05 | 2013-05-02 | Fujitsu Ten Ltd | Radar system and object derivation method |
-
1993
- 1993-12-17 JP JP5343361A patent/JP2970373B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6087949A (en) * | 1998-04-06 | 2000-07-11 | Nec Corporation | Method and apparatus for preventing overheat of portable telephone |
| JP2012023766A (en) * | 2003-04-01 | 2012-02-02 | Nec Corp | Information processing terminal |
| US8447224B2 (en) | 2003-04-01 | 2013-05-21 | Nec Corporation | Data processing terminal system and transmitting and receiving method using the same |
| US8489014B2 (en) | 2003-04-01 | 2013-07-16 | Nec Corporation | Data processing terminal system and transmitting and receiving method using the same |
| US8538348B2 (en) | 2003-04-01 | 2013-09-17 | Nec Corporation | Data processing terminal system and transmitting and receiving method using the same |
| JP2008205848A (en) * | 2007-02-20 | 2008-09-04 | Fujitsu Ltd | Transmitting device, transmitting method and transmission program |
| JP2013079890A (en) * | 2011-10-05 | 2013-05-02 | Fujitsu Ten Ltd | Radar system and object derivation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2970373B2 (en) | 1999-11-02 |
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