The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 1982
Filed:
Nov. 06, 1980
Eiichi Ohtsu, Katsuta, JP;
Takanori Shibata, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An automatic air-conditioning apparatus, especially suitable for air-conditioning of an automotive vehicle, comprises a microcomputer controlling the air-conditioning operation and a temperature display element selectively displaying an internal air temperature of the vehicle compartment sensed by an air temperature sensor and a temperature setting set by a temperature setting unit. The temperature display element displays normally the internal air temperature but displays the temperature setting for a predetermined period of time only when the temperature setting unit is manipulated. In the main control flow including the steps of air-conditioning control and temperature display stored in the microcomputer, an interrupt routine is periodically run for the purpose of analog data processing requiring a relatively long period of time, so that the microcomputer can efficiently carry out other controls.