JPS583654U - Automotive electronics - Google Patents
Automotive electronicsInfo
- Publication number
- JPS583654U JPS583654U JP9661581U JP9661581U JPS583654U JP S583654 U JPS583654 U JP S583654U JP 9661581 U JP9661581 U JP 9661581U JP 9661581 U JP9661581 U JP 9661581U JP S583654 U JPS583654 U JP S583654U
- Authority
- JP
- Japan
- Prior art keywords
- chips
- electronic equipment
- ground pattern
- ground
- pattern
- 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
Landscapes
- Noise Elimination (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の自動車用ディジタル電子機器の、
構成の一例を示すブロック図、第２図は自動車の電子機
器ならびに電装品の相対位置を示す説明図、第３図は雑
音防止装置を設けない従来の自動車用ディジタル電子機
器からの雑音を測定した周波数スペクトラム図、第４図
は従来の自動車電子機器における基板上のアースパター
ンの一例を部分的に示す線図、第５図は本考案によるア
ースパター −ンの二個を部分的に示す線図、第６
図は本考案のアースパターンを設けた自動車電子機器か
らの雑音を測定した周波数スペクトラム図である。
１・・・・・・マイクロプロセッサ、２・・・・・・ク
ロック発麺器、３・・・・・・メモリ、、４Ａ、 ４
Ｂ、 ４Ｃ，４Ｄ・・開制御回路、５Ａ、 ５Ｂ、
５Ｃ，５Ｄ・・凹入出力インクフエエース群とその
制御回路、６・・・・・・ディジタルブロック、７・・
・・・・電源部、８・・・・・・ケース、９Ａ。
９Ｂ、 ９Ｃ，９Ｄ・・・・・・入出力信号線、１０・
・・・・・電源線、１１・・・・・・車載ラジオ、１２
．１３・・・用アンテナ、１４．１５・・・・・・ハー
ネス、１６・・・・・・バッテリ、１７・・・・・・ボ
デー、２０・・・・・・プリント基板、２１Ａ・・・・
・・主アースパターン、２１Ｂ・・・・・・第１アース
パターン、２１Ｃ，２１Ｄ・・・用第２アースパターン
、２２〜２７・・・・・・チップ、２２Ｔ、２２Ｓ。
２３Ｔ、２４Ｔ、２５Ｔ、２６Ｔ、２７Ｔ・・・・・・
アース端子。Figure 1 shows the conventional digital electronic equipment for automobiles.
A block diagram showing an example of the configuration, Figure 2 is an explanatory diagram showing the relative positions of automotive electronic equipment and electrical components, and Figure 3 shows the measurement of noise from conventional automotive digital electronic equipment that is not equipped with a noise prevention device. Frequency spectrum diagram; Fig. 4 is a diagram partially showing an example of a grounding pattern on a circuit board in a conventional automobile electronic device; Fig. 5 is a diagram partially showing two grounding patterns according to the present invention. , 6th
The figure is a frequency spectrum diagram obtained by measuring noise from automobile electronic equipment provided with the ground pattern of the present invention. 1...Microprocessor, 2...Clock noodle generator, 3...Memory, 4A, 4
B, 4C, 4D...Open control circuit, 5A, 5B,
5C, 5D...Concave input/output ink face group and its control circuit, 6...Digital block, 7...
...Power supply section, 8...Case, 9A. 9B, 9C, 9D... Input/output signal line, 10.
...Power line, 11... Car radio, 12
．． 13...Antenna, 14.15...Harness, 16...Battery, 17...Body, 20...Printed circuit board, 21A...・
...Main earth pattern, 21B...First earth pattern, 21C, 21D...Second earth pattern, 22-27...Chip, 22T, 22S. 23T, 24T, 25T, 26T, 27T...
Earth terminal.
Claims (1)
モ１八 リードオンリメモリ、入出力装置等の複数のチ
ップを配設し、これらチップをクロックパルスにより同
期制御する自動車用電子機器において、前記チップの各
々のアース端子を第１アースパターンにより主アースパ
ターンに接続すると共に、前記チップのうちの少なくと
も高周波電位差の最も矢きい２個のチップの前記アース
端子間を第２アー哀パターンにより接続したことを特徴
とする自動車用電子機器。゛ In automotive electronic equipment in which a plurality of chips such as a central processing unit, a random access memory 18, a read-only memory, an input/output device, etc. are arranged on a substrate and these chips are synchronously controlled by clock pulses, Each ground terminal is connected to the main ground pattern by a first ground pattern, and the ground terminals of at least two of the chips with the highest high-frequency potential difference are connected by a second ground pattern. Characteristic automotive electronic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9661581U JPS583654U (en) | 1981-07-01 | 1981-07-01 | Automotive electronics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9661581U JPS583654U (en) | 1981-07-01 | 1981-07-01 | Automotive electronics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS583654U true JPS583654U (en) | 1983-01-11 |
Family
ID=29891458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9661581U Pending JPS583654U (en) | 1981-07-01 | 1981-07-01 | Automotive electronics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS583654U (en) |
-
1981
- 1981-07-01 JP JP9661581U patent/JPS583654U/en active Pending
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