JPH03113583U - - Google Patents
Info
- Publication number
- JPH03113583U JPH03113583U JP2112690U JP2112690U JPH03113583U JP H03113583 U JPH03113583 U JP H03113583U JP 2112690 U JP2112690 U JP 2112690U JP 2112690 U JP2112690 U JP 2112690U JP H03113583 U JPH03113583 U JP H03113583U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- time signal
- ground
- command
- satellite
- 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
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
Landscapes
- Alarm Systems (AREA)
- Selective Calling Equipment (AREA)
- Radio Relay Systems (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図は従来のコマンド送受信装置を説明する
ためのブロツク図、第３図は従来のコマンド信号
のフオーマツトを示す図、第４図は第１図に示し
た実施例におけるコマンド信号のフオーマツトを
示す図である。
図中、１はコマンドメツセージ発生回路、２は
送信コマンドメツセージ、３は第１のタイマ回路
、４は地上時刻信号、５は合成回路、６は送信コ
マンド信号、７は送信機、８は地上局、９は受信
機、１０は受信コマンド信号、１１は第２のタイ
マ回路、１２は衛星時刻信号、１３は分解回路、
１４は受信時刻信号、１５は受信コマンドメツセ
ージ、１６は排他的ＮＯＲ回路、１７はＡＮＤ回
路、１８は実行コマンド信号、１９は衛星を示す
。なお、図中、同一符号は同一又は相当部分を示
す。
FIG. 1 is a block diagram showing an embodiment of this invention, FIG. 2 is a block diagram for explaining a conventional command transmitting/receiving device, FIG. 3 is a diagram showing the format of a conventional command signal, and FIG. 4 is a diagram showing a conventional command signal format. FIG. 2 is a diagram showing the format of a command signal in the embodiment shown in FIG. 1; In the figure, 1 is a command message generation circuit, 2 is a transmission command message, 3 is a first timer circuit, 4 is a ground time signal, 5 is a synthesis circuit, 6 is a transmission command signal, 7 is a transmitter, and 8 is a ground station , 9 is a receiver, 10 is a received command signal, 11 is a second timer circuit, 12 is a satellite time signal, 13 is a decomposition circuit,
14 is a reception time signal, 15 is a reception command message, 16 is an exclusive NOR circuit, 17 is an AND circuit, 18 is an execution command signal, and 19 is a satellite. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
発生する第１のタイマ回路、上記のコマンドメツ
セージ発生回路の出力と地上時刻信号とを合成す
る合成回路、この合成回路に接続される送信機と
を地上局に備え、受信機、この受信機に接続され
コマンドメツセージと地上時刻信号とを分離する
分解回路、衛星時刻信号を発生する第２のタイマ
回路、上記の分解回路から出力される地上時刻信
号と上記の第２のタイマ回路から出力される衛星
時刻信号とを比較し一致していれば論理値“１″
を出力する排他的ＮＯＲ回路、上記の分解回路か
ら出力されるコマンド信号と上記の排他的ＮＯＲ
回路との論理積演算を行うＡＮＤ回路とを衛星に
備えたことを特徴とするコマンド送受信装置。 A command message generation circuit, a first timer circuit that generates a ground time signal, a synthesis circuit that synthesizes the output of the command message generation circuit and the ground time signal, and a transmitter connected to this synthesis circuit are connected to a ground station. a receiver, a disassembly circuit connected to the receiver that separates the command message and the ground time signal, a second timer circuit that generates the satellite time signal, and a ground time signal output from the above disassembly circuit and the above ground time signal. Compare with the satellite time signal output from the second timer circuit, and if they match, the logical value is "1"
an exclusive NOR circuit that outputs the command signal output from the above decomposition circuit and the above exclusive NOR circuit.
A command transmitting/receiving device characterized in that a satellite is provided with an AND circuit that performs an AND operation with a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2112690U JPH03113583U (en) | 1990-03-02 | 1990-03-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2112690U JPH03113583U (en) | 1990-03-02 | 1990-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03113583U true JPH03113583U (en) | 1991-11-20 |
Family
ID=31524184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2112690U Pending JPH03113583U (en) | 1990-03-02 | 1990-03-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03113583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016514914A (en) * | 2013-03-28 | 2016-05-23 | エアバス・ディフェンス・アンド・スペース・リミテッド | Key distribution in satellite systems |
-
1990
- 1990-03-02 JP JP2112690U patent/JPH03113583U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016514914A (en) * | 2013-03-28 | 2016-05-23 | エアバス・ディフェンス・アンド・スペース・リミテッド | Key distribution in satellite systems |
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