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:
May. 11, 2004
Filed:
Dec. 14, 1999
Atsushi Kanayama, Omiya, JP;
Hiroyuki Kawamura, Omiya, JP;
Fuji Photo Optical Co., Ltd., Omiya, JP;
Abstract
In a TV lens system including a TV lens apparatus and a control unit, CPUs of the TV lens apparatus and the control unit monitor intervals between received data in serial communication in a digital control mode. If the data transmission stops for a predetermined time or the received data has an error, the CPUs determine that the communication is abnormal and switch the control modes of the TV lens system from the digital control mode to an analog control mode by operating switching devices. Display units show that the system has been switched to the analog control mode. If the CPUs detect the communication being abnormal, they may display abnormality of the communication on the display units to inform the user of the abnormality of the communication so that the user can switch the control modes by manually operating analog setting switches. Information indicating the abnormality of the communication is stored in an EEPROM, and presented to the user when the TV lens system starts to operate afterward.