JPH03126748U - - Google Patents
Info
- Publication number
- JPH03126748U JPH03126748U JP3607290U JP3607290U JPH03126748U JP H03126748 U JPH03126748 U JP H03126748U JP 3607290 U JP3607290 U JP 3607290U JP 3607290 U JP3607290 U JP 3607290U JP H03126748 U JPH03126748 U JP H03126748U
- Authority
- JP
- Japan
- Prior art keywords
- resonance
- key
- waveform
- determining
- frequency
- 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
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
Landscapes
- Lock And Its Accessories (AREA)
Description
第１図は、本考案に係るキーコードをパターン
認識する処理機能をもつ車両用キー装置の電気回
路のブロツク図、第２図は周波数と電流の関係を
示す線図、第３図はキー情報を説明するための共
振波形図、第４図はキーコードを認識処理するた
めのフローチヤート、第５図は波形認識の演算処
理を説明するための図である。
１……ＣＰＵ、２……可変周波数発振器、３…
…信号検出コイル、４……キーコイル、５……Ｌ
Ｃ共振回路、７……増幅器、１０……Ａ／Ｄ変換
器。
Fig. 1 is a block diagram of the electrical circuit of a vehicle key device having a processing function for pattern recognition of key codes according to the present invention, Fig. 2 is a diagram showing the relationship between frequency and current, and Fig. 3 is a diagram showing key information. FIG. 4 is a flowchart for key code recognition processing, and FIG. 5 is a diagram for explaining arithmetic processing for waveform recognition. 1...CPU, 2...Variable frequency oscillator, 3...
...Signal detection coil, 4...Key coil, 5...L
C resonance circuit, 7...amplifier, 10...A/D converter.
Claims (1)
通信を行つて得られたキー共振信号を判定して制
御対象へ駆動の許可または禁止指令を与える車両
用キー装置において、前記キー共振信号の波形を
認識するためのデータ処理手段と、処理された波
形データから共振点の周波数を求める手段と、共
振点の電圧値、共振の鋭さ、共振波形の面積など
の共振波形要素を求める手段と、前記共振周波数
と共振波形要素を加えたキーコードを判定する手
段と、を具備する車両用キー装置。 A vehicle key device recognizes the waveform of the key resonance signal in a vehicle key device that determines the key resonance signal obtained by communicating information through magnetic coupling between the key and the key cylinder and issues a drive permission or prohibition command to the controlled object. a means for determining the frequency of the resonance point from the processed waveform data; a means for determining resonance waveform elements such as a voltage value at the resonance point, sharpness of resonance, and area of the resonance waveform; and a means for determining the resonance frequency. and means for determining a key code including a resonant waveform element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3607290U JP2504167Y2 (en) | 1990-04-03 | 1990-04-03 | Vehicle key device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3607290U JP2504167Y2 (en) | 1990-04-03 | 1990-04-03 | Vehicle key device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03126748U true JPH03126748U (en) | 1991-12-20 |
| JP2504167Y2 JP2504167Y2 (en) | 1996-07-10 |
Family
ID=31541986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3607290U Expired - Lifetime JP2504167Y2 (en) | 1990-04-03 | 1990-04-03 | Vehicle key device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2504167Y2 (en) |
-
1990
- 1990-04-03 JP JP3607290U patent/JP2504167Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2504167Y2 (en) | 1996-07-10 |
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