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:
Sep. 18, 2001
Filed:
Mar. 28, 2000
Koji Kodama, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The electric circuit,is electrically separated into two portions, a first electric circuit portion,and a second electric circuit portion,which processes a small analog signal. The ground,of the first electric circuit portion can be connected to the ground,of the host unit. The ground and power supply lines of the amplifier,in the assembly,are connected directly to those of the second electric circuit portion, respectively. An optical data and signals transmitting/receiving member, such as a photocoupler,, transmits and receives data and signals between the first electric circuit portion and the second electric circuit portion and is provided between both these portions. An enclosure,encloses and shields electro-magnetically the whole device with an electric conductor. A conductive connecting member,is provided between the electric conductor of the enclosure and the ground,of the host unit.