JPH01296325A - Terminal equipment - Google Patents
Terminal equipmentInfo
- Publication number
- JPH01296325A JPH01296325A JP63126791A JP12679188A JPH01296325A JP H01296325 A JPH01296325 A JP H01296325A JP 63126791 A JP63126791 A JP 63126791A JP 12679188 A JP12679188 A JP 12679188A JP H01296325 A JPH01296325 A JP H01296325A
- Authority
- JP
- Japan
- Prior art keywords
- power source
- external power
- main body
- input device
- electrode
- 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.)
- Pending
Links
- 230000008054 signal transmission Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
Landscapes
- Power Sources (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、入力装置と装置本体が独立に構成され、入力
装置から装置本体への16号の伝送を無線または有線で
行なう端末装置に関する。Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a terminal device in which an input device and a device main body are configured independently, and which transmits No. 16 from the input device to the device main body wirelessly or by wire. .
(ロ)従来の技術
従来から、入力装置と装置本体が独立に構成され、入力
装置から装置本体への信号の伝送を無線または有線で行
なう端末装置が実現されている。(B) Prior Art Conventionally, terminal devices have been realized in which an input device and a device main body are configured independently, and signals are transmitted from the input device to the device main body wirelessly or by wire.
この種の端末装置の入力装置には電池等の内部1i源が
内蔵されており、入力装置より無線で装置本体にデータ
を入力する場合には、前記内部電源を利用する構成とな
っている。一方、入力装置より有線で装置本体にデータ
を入力する場合には、入力装置と装置本体間をデータ送
侶線と電fA腺で接続し、前記装置本体の*mを利用す
る構成となっている。The input device of this type of terminal device has an internal power source such as a battery built-in, and when data is inputted wirelessly from the input device to the main body of the device, the internal power source is used. On the other hand, when inputting data from an input device to the main body of the device by wire, the input device and the main body of the device are connected by a data transmission line and an electric fA gland, and the *m of the main body of the device is used. There is.
ここで、入力装置から装置本体への信号の伝送を有線で
行なう場合の回路構成を第2図に基づいて説明する。Here, the circuit configuration when transmitting signals from the input device to the main body of the apparatus by wire will be explained based on FIG. 2.
図において、(1)は装置本体、〈2)は入力装置、(
3)は装置本体(2)内に設けられた外部電源、(4)
は装置本体(2)内に設けられた端末装置全体の制御を
司る制御部、(5)は入力装置(1)内に設けられたキ
ー入力手段、(6)は入力装置(1)内に設けられキー
入力手段(5)からの信号に基づいてキーコードを発生
し、該キーコードを制御部(4)に出力するキーコード
発生回路、(7)は入力装置く1)内に設けられた内部
電源、(8)は電源切替部である。電源切替部(8)は
2個のダイオード(9)(10)で構成され、ダイオー
ド(9)のアノード電極(A)は外部電R(3)に接続
され、ダイオード(10)のアノード電極(A)は外部
電源(3)とプルダウン抵抗(11)に接続されている
。また、ダイオード(9)(10)のカソード電極(K
)はキーコード発生回路(6)に接続されている。In the figure, (1) is the main body of the device, (2) is the input device, (
3) is an external power supply installed in the device body (2), (4)
(5) is a key input means provided in the input device (1); (6) is a control unit provided in the device body (2) that controls the entire terminal device; (5) is a key input means provided in the input device (1); A key code generation circuit (7) is provided in the input device (1) and generates a key code based on a signal from the provided key input means (5) and outputs the key code to the control unit (4). (8) is a power supply switching unit. The power supply switching unit (8) is composed of two diodes (9) and (10), the anode electrode (A) of the diode (9) is connected to the external voltage R (3), and the anode electrode (A) of the diode (10) is connected to the external power supply R (3). A) is connected to an external power supply (3) and a pull-down resistor (11). In addition, the cathode electrodes (K
) is connected to the key code generation circuit (6).
斯かる構成により、入力装置(1)から装置本体(2)
への信号の伝送を有線で行なう場合、内部電源(7)の
消費を抑制するために、前記電源切替部(8)内のダイ
オード(9)(10)の作用を利用して外部電源(3)
を用いるようにしている。これは、内部電源(7)の電
圧を外部電源(3)のそれよりも低く設定しておくこと
で実現できる。With this configuration, the input device (1) to the device body (2)
When transmitting signals to the external power source (3) by wire, in order to suppress the consumption of the internal power source (7), the action of the diodes (9) and (10) in the power source switching section (8) is used to transmit the signal to the external power source (3). )
I try to use This can be achieved by setting the voltage of the internal power supply (7) lower than that of the external power supply (3).
(ハ) 発明が解決しようとする課題
上述の従来技術において、有線時に内部電源の使用を禁
止するには、内部電源(7)の電圧を外部電源(3)の
電圧より小とする必要がある。(c) Problems to be solved by the invention In the above-mentioned prior art, in order to prohibit the use of the internal power supply when wired, the voltage of the internal power supply (7) must be lower than the voltage of the external power supply (3). .
しかしながら、装置本体(2)側あるいは入力装置(1
)側の何らかの要因により外部電源(3)の電圧より内
部電源(7)の電圧が大となった場合、該内部電源(7
)は外部電源(3〉の電圧まで消費されることになる。However, the device main body (2) side or the input device (1)
) If the voltage of the internal power supply (7) becomes higher than the voltage of the external power supply (3) due to some factor, the internal power supply (7)
) will be consumed up to the voltage of the external power supply (3>).
本発明は上述の事情に鑑み為されたものであり、入力装
置から装置本体への信号の伝送を有線で行う場合、常に
外部電源を使用する端末装置を提供しようとするもので
ある。The present invention has been made in view of the above-mentioned circumstances, and aims to provide a terminal device that always uses an external power source when transmitting signals from an input device to the main body of the device by wire.
(ニー)課題を解決するための手段
本発明は、内部電源、キー入力手段°からの信号に基づ
いて、キーコードを発生するキーコード発生回路及び電
源切替部を具備する入力装置と、外部電源及び前記キー
コードが入力される制御部を具備する装置本体と、から
成る端末装置において、前記tm切替部はノーマルオン
型のトランジスタ、ダイオード及びプルダウン抵抗で構
成サレ、前記トランジスタのソース電極は前記内部電源
に、前記トランジスタのゲート電極は前記外部電源、前
記プルダウン抵抗及び前記ダイオードのアノード電極に
、前記トランジスタのドレイン電極は前記キーコード発
生回路及び前記ダイオードのカソード電極に接続されて
いることを特徴とする端末装置である。(knee) Means for Solving the Problems The present invention provides an input device comprising an internal power supply, a key code generation circuit that generates a key code based on a signal from a key input means, and a power supply switching section, and an external power supply. and a device main body comprising a control section into which the key code is input, wherein the tm switching section is composed of a normally-on transistor, a diode, and a pull-down resistor, and the source electrode of the transistor is connected to the inside of the terminal device. The gate electrode of the transistor is connected to a power source, the external power source, the pull-down resistor, and the anode electrode of the diode, and the drain electrode of the transistor is connected to the key code generation circuit and the cathode electrode of the diode. This is a terminal device for
(ホ) 作用
本発明によれば、入力装置から装置本体への信号の伝送
を有線で行なう場合、ノーマルオン型のトランジスタの
ゲート電極に外部電源の電圧が印加され、内部電源に接
続された該トランジスタのソース電極とキーコード発生
回路に接続された該トランジスタのドレイン電極間が遮
断きれる。(E) Function According to the present invention, when transmitting signals from the input device to the main body of the device by wire, the voltage of the external power supply is applied to the gate electrode of the normally-on transistor, and the voltage of the external power supply is applied to the gate electrode of the normally-on transistor, and the The source electrode of the transistor and the drain electrode of the transistor connected to the key code generation circuit are disconnected.
(へ) 実施例
第1図は本発明の端末装置の入力装置から装置本体への
信号の伝送を有線で行なう場合のブロック図である。(F) Embodiment FIG. 1 is a block diagram when signals are transmitted from the input device of the terminal device of the present invention to the main body of the device by wire.
第1図において、第2図と同一部分には同、−符号を符
し、その説明は省略する。In FIG. 1, parts that are the same as those in FIG. 2 are designated with the same - symbol, and their explanation will be omitted.
(12)はゲート電極(G)が外部電源(3)、接地さ
れたプルダウン抵抗(11)及びダイオード(9)のア
ノード電極(A)に、ソース電極(S)が内部電源(7
)に、ドレイン電極(D)がダイオード(10)を介し
てダイオード(9)のカソード電極(K)及びキーコー
ド発生回路(6)に接続されたノーマルオン型のトラン
ジスタ(FET)である。In (12), the gate electrode (G) is connected to the external power source (3), the grounded pull-down resistor (11) and the anode electrode (A) of the diode (9), and the source electrode (S) is connected to the internal power source (7).
) is a normally-on transistor (FET) whose drain electrode (D) is connected to the cathode electrode (K) of the diode (9) and the key code generation circuit (6) via the diode (10).
斯かる構成により、入力装置(1)から装置本体(2)
への信号の伝送を有線で行なう場合、外部電源く3)よ
りFET(12)のゲート電極(G)に電圧が印加され
該FET(12)のソース電極(G)−ドレイン電極(
D)間が遮断される。而して、入力装置(1)から装置
本体(2)への信号の伝送を有線で行なう場合、外部電
源(3)が用いられる。この構成では、例えば、内部電
源(7)として6vの電池を用い、外部1ff(3)の
電圧が5vとなっても、FET(12)の働きにより内
部電源(7)が使用されることはなく内部電源(7)の
消費を抑制することができる、すなわち、装置本体(2
)側あるいは入力装置1t(1)側の何らかの要因によ
り外部電源(3)の電圧が内部IE源(7)のそれより
も小となった場合でも、内部電f’R<7 )は使用さ
れない。With this configuration, the input device (1) to the device body (2)
When transmitting signals to the FET (12) by wire, a voltage is applied from an external power supply (3) to the gate electrode (G) of the FET (12), and the source electrode (G) - drain electrode (
D) The gap is cut off. When transmitting signals from the input device (1) to the device body (2) by wire, an external power source (3) is used. In this configuration, for example, even if a 6V battery is used as the internal power supply (7) and the voltage of the external 1ff (3) is 5V, the internal power supply (7) will not be used due to the function of the FET (12). In other words, the consumption of the internal power supply (7) can be suppressed without
Even if the voltage of the external power supply (3) becomes lower than that of the internal IE source (7) due to some factor on the ) side or the input device 1t (1) side, the internal voltage f'R<7) is not used. .
一方、入力装置(1)から装置本体(2)への信号の伝
送を無線で行なう場合、入力装置より外部電源(3)が
外され、FET(12)のゲート電極(G)に電圧が印
加されず(ゲート電極(G)はプルダウン抵抗(11)
を介して接地される)、該F E T (12)のソー
ス電極(S)−ドレイン電極(D>間が導通する。而し
て、入力装置(1)から装置本体(2)へのイコ3−の
伝送を無線で行なう場合、内部電源(7)が用いられる
。゛
なお、信号の伝送を無線で行なう場合には、入力装置t
(1)に設けられ、キーコード発生回路(6)からのキ
ーコードに基づいて無線信号を出力する送信手段(図示
省略)と、装置本体(2)に設けられ、前記無線信号を
受信し制御部(4)にキーコードを出力する受信手段(
図示省略)を用いる。On the other hand, when transmitting signals from the input device (1) to the device main body (2) wirelessly, the external power source (3) is removed from the input device and a voltage is applied to the gate electrode (G) of the FET (12). (The gate electrode (G) is a pull-down resistor (11)
conduction between the source electrode (S) and drain electrode (D>) of the FET (12).Thus, the input device (1) is connected to the main body (2) of the input device (2). When transmitting the signal in step 3- wirelessly, the internal power supply (7) is used. ゛When transmitting the signal wirelessly, the input device t
A transmitting means (not shown) provided in (1) and outputting a wireless signal based on the key code from the key code generation circuit (6); and a transmitting means (not shown) provided in the main body (2) of the device to receive and control the wireless signal. receiving means (4) for outputting the key code to the section (4);
(not shown) is used.
また、ダイオード(10)は本発明の場合、ドレイン電
極<D>への逆流防止のために用いられており、必ずし
も必要ではない。Further, in the case of the present invention, the diode (10) is used to prevent backflow to the drain electrode <D>, and is not necessarily required.
(ト)発明の効果
本発明は以上の説明から明らかな如く、外部電源の電圧
と内部を源の1圧が如何なる関係にあっても、入力装置
から装置本体への信号の伝送を有線で行なう場合には、
常に外部を源が使用されるので、内部電源の寿命を延ば
すことができる。(G) Effects of the Invention As is clear from the above description, the present invention transmits signals from the input device to the main body of the device by wire, regardless of the relationship between the voltage of the external power supply and the voltage of the internal source. in case of,
Since an external source is always used, the lifespan of the internal power source can be extended.
第1図は本発明の一実施例の端末装置のブロック図、第
2図は従来の端末装置のブロック図である。
(1)・・・入力装置、(2)・・・装置本体、(3)
・・・外部を源、(4)・・・制御部、(5)・・・キ
ー入力手段、(6)・・・キーコード発生回路、(7)
・・・内部電源、(8)・・・を源切替部、(9)(1
0)・・・ダイオード、(11)・・・プルダウン抵抗
、(12)・・・トランジスタ。
出願人 三洋電機株式会社 外1名
代理人 弁理士 西野卓嗣〈外1名)FIG. 1 is a block diagram of a terminal device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional terminal device. (1)...Input device, (2)...Device body, (3)
...External source, (4)...Control unit, (5)...Key input means, (6)...Key code generation circuit, (7)
...internal power supply, (8)... is the source switching section, (9) (1
0)...Diode, (11)...Pull-down resistor, (12)...Transistor. Applicant: Sanyo Electric Co., Ltd. (1 other person) Attorney: Takuji Nishino (1 other person)
Claims (1)
キーコードを発生するキーコード発生回路及び電源切替
部を具備する入力装置と、 外部電源及び前記キーコードが入力される制御部を具備
する装置本体と、 から成る端末装置において、 前記電源切替部はノーマルオン型のトランジスタ、ダイ
オード及びプルダウン抵抗で構成され、前記トランジス
タのソース電極は前記内部電源に、前記トランジスタの
ゲート電極は前記外部電源、前記プルダウン抵抗及び前
記ダイオードのアノード電極に、前記トランジスタのド
レイン電極は前記キーコード発生回路及び前記ダイオー
ドのカソード電極に接続されていることを特徴とする端
末装置。(1) Based on signals from the internal power supply and key input means,
A terminal device comprising: an input device including a key code generation circuit that generates a key code and a power switching section; and a device main body including an external power source and a control section into which the key code is input, wherein the power switching section is It is composed of a normally-on transistor, a diode, and a pull-down resistor, and the source electrode of the transistor is connected to the internal power source, the gate electrode of the transistor is connected to the external power source, the pull-down resistor, and the anode electrode of the diode, and the drain of the transistor is connected to the external power source, the pull-down resistor, and the anode electrode of the diode. A terminal device characterized in that an electrode is connected to the key code generation circuit and the cathode electrode of the diode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63126791A JPH01296325A (en) | 1988-05-24 | 1988-05-24 | Terminal equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63126791A JPH01296325A (en) | 1988-05-24 | 1988-05-24 | Terminal equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01296325A true JPH01296325A (en) | 1989-11-29 |
Family
ID=14944034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63126791A Pending JPH01296325A (en) | 1988-05-24 | 1988-05-24 | Terminal equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01296325A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5928724B2 (en) * | 1976-09-07 | 1984-07-16 | 株式会社東芝 | Geothermal turbine control device |
-
1988
- 1988-05-24 JP JP63126791A patent/JPH01296325A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5928724B2 (en) * | 1976-09-07 | 1984-07-16 | 株式会社東芝 | Geothermal turbine control device |
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