Patent JPH1055463A successfully refreshed from Google Patents.
← Back to Patent Explorer
JPH1055463A Expired / Lapsed JP ⏱️ 0.0 years remaining

In-vehicle device of automatic toll collection system

Assignee: Hitachi Ltd
•
Filing: 1996-08-09
•
Granted: —
•
Expires: 2016-08-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from Japanese (57)【要約】 【課題】自動料金収受システムの車載機では、通信内容 を暗号化する必要がある。暗号鍵は前記システムの管理 者が管理するが、車載機の設計、製造、配布は別の業者 が行う。保安上の理由から前記システムの運営者以外が 暗号鍵に触れる機会を減らしたい。 【解決手段】暗号鍵を必要とする暗号化装置に、暗号鍵 を含め、暗号鍵を外に出す必要をなくする。 (57) [Summary] [Problem] In an in-vehicle device of an automatic toll collection system, it is necessary to encrypt communication contents. The encryption key is managed by the administrator of the system, but the design, manufacture, and distribution of the vehicle-mounted device are performed by another company. For security reasons, we want to reduce the chances of anyone other than the system operator touching the encryption key. An encryption device that requires an encryption key, including an encryption key, eliminates the need to export the encryption key.

Inventors

  • 👤 Kenji Kobayashi
  • 👤 健二 小林
  • 👤 Toshiyuki Sakamoto
  • 👤 敏幸 坂本
  • 👤 Yasunari Tanaka
  • 👤 泰成 田中

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-04 13:11
CPC Classifications
G; G07; G07B; G07B15/00; G07B15/06; G07B15/063; G08; G08G; G08G1/00; G08G1/01; G08G1/017

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag