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:
Jan. 12, 1993
Filed:
May. 15, 1992
Kenji Iimura, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A data transfer controller having a plurality of data transfer channels, each having burst-number registers for prescribing the numbers of data transfer words in the individual channels, a total-burst-number register for prescribing the number of continuous data transfer words extending over at least two of the channels, and control means for performing a control for acquiring a bus mastership upon receiving a signal of the status of any of the channels capable of transferring data, for controlling the numbers of continuous data transfer words in the individual channels on the basis of the set values of the burst-number registers, respectively, and for maintaining the bus mastership for any other channel in the status capable of transferring data, until the numbers of the continuous data transfer words after the acquisition of the bus mastership reaches the set value of the total-burst-number register.