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JPS55140158A - Digital speedometer for automobile - Google Patents

Digital speedometer for automobile

Info

Publication number
JPS55140158A
JPS55140158A JP4755579A JP4755579A JPS55140158A JP S55140158 A JPS55140158 A JP S55140158A JP 4755579 A JP4755579 A JP 4755579A JP 4755579 A JP4755579 A JP 4755579A JP S55140158 A JPS55140158 A JP S55140158A
Authority
JP
Japan
Prior art keywords
level
sampling time
outputted
inverter
enhance
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
Application number
JP4755579A
Other languages
Japanese (ja)
Inventor
Shoji Kawada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP4755579A priority Critical patent/JPS55140158A/en
Publication of JPS55140158A publication Critical patent/JPS55140158A/en
Pending legal-status Critical Current

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  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Abstract

PURPOSE: To enhance the vision recognition of displays without extending the sampling time by starting sampling when a pulse of a train of pulses produced by the rise and the fall of a pulse produced corresponding to the car speed is outputted.
CONSTITUTION: Pulses from clock pulse generator 29 of sampling time setter 28 are inputted to CL terminal of binary counter 30 and counted. Then, they become a subharmonic and is outputted from Qn terminal. This output is impressed to inverter 32, and after a semi-stabilization time determined by condenser 31 and resistor 33, it is level-converted and sent to inverter 34. its output is applied to each latch driver, 35W37, of decimal couters 25W27. During the time that the level is L, the couner value is latched. When the level is changed to H, the counter value is sent to respective display elements 38W40, and thereby the car speed is digital-displayed in Km/h units in places of units, tens and hundreds. By this, it is possible to enhance the vision recognition of diplayes without extending sampling time.
COPYRIGHT: (C)1980,JPO&Japio
JP4755579A 1979-04-18 1979-04-18 Digital speedometer for automobile Pending JPS55140158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4755579A JPS55140158A (en) 1979-04-18 1979-04-18 Digital speedometer for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4755579A JPS55140158A (en) 1979-04-18 1979-04-18 Digital speedometer for automobile

Publications (1)

Publication Number Publication Date
JPS55140158A true JPS55140158A (en) 1980-11-01

Family

ID=12778417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4755579A Pending JPS55140158A (en) 1979-04-18 1979-04-18 Digital speedometer for automobile

Country Status (1)

Country Link
JP (1) JPS55140158A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558460A (en) * 1983-06-14 1985-12-10 Honda Giken Kogyo Kabushiki Kaisha Audio apparatus for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558460A (en) * 1983-06-14 1985-12-10 Honda Giken Kogyo Kabushiki Kaisha Audio apparatus for vehicle

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