Integrated circuit card type car audio system and operating meth

Details Integrated circuit card type car audio system and operating meth Integrated circuit card type car audio system and operating meth

1998-03-27

2000-06-20

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082534, 340426, 235380, 235492, 4551861, 455345, 455347, 455348, G06F 704

Patent

active

060782668

ABSTRACT:
An integrated circuit type car audio system can be operated at a general mode or an IC card mode. In the integrated circuit type car audio system, comparator compares a password number stored in the integrated circuit card which is loaded on said system with a reference password number. Mode select section generates a general mode select signal or an integrated circuit card mode signal to select a general mode or an integrated circuit card mode when the stored password number in the integrated circuit card and the reference password number coincide with each other. Controller receives any of the mode select signals selected by the mode select section and generates a mode execute control signal according to the one mode signal selected, and discriminates whether the integrated circuit card is a corresponding card for performing functions of the system based on the comparison result of the comparator. Output circuit outputs information to indicate whether the loaded integrated circuit card is a corresponding card for performing functions of the system according to the discriminating result from the controller. Function circuit executes any mode selected by the mode select section in response to the mode execute control signal generated by the controller. According to the system, car audio functions can selectively be performed at a general mode or an IC card mode according to a user's need.

REFERENCES:
patent: 5001775 (1991-03-01), Hayashi et al.
patent: 5049728 (1991-09-01), Rovin
patent: 5285055 (1994-02-01), Oonakahara et al.
patent: 5548163 (1996-08-01), French
patent: 5781123 (1998-07-01), Koenig et al.

Affiliated with

Also associated with

Rating

Integrated circuit card type car audio system and operating meth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated circuit card type car audio system and operating meth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated circuit card type car audio system and operating meth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1856630