公开(公告)号：US3631229A

公开(公告)日：1971-12-28

申请号：US3631229D

申请日：1970-09-30

Applicant: IBM

Inventor： BENS FREDERICK N ,  DIMITRI KAMAL E ,  MOORE MICHAEL J ,  TOMKO JOHN E ,  WAJDA WALTER W

IPC: G01R31/319 ,  G11C29/56 ,  G01R15/12

CPC classification number: G01R31/31917 ,  G11C29/56

Abstract: A method and apparatus are disclosed for testing on a simulated real time basis a chip or monolithic memory array. The tester is interfaced to a computer with which it communicates in a cycle steal mode of operation. The test pattern which tests the basic failure modes that can occur in the array is loaded into an area of the computer core storage whose address is given to the tester by an instruction. Another core address is given to the tester which is the area where results of the test are stored. A failure diagnosis program makes a decision as to which failure mode occurred, and the results of the diagnosis are printed out with digital coding to indicate the type of failure. Since the entire test is done in continuous cycle steal mode, the time involved is only a few milliseconds, depending on the length of the pattern.

公开(公告)号：GB2353393A

公开(公告)日：2001-02-21

申请号：GB0014631

申请日：2000-06-16

Applicant: IBM

Inventor： DIMITRI KAMAL E ,  MEANS RODNEY J ,  KULAKOWSKI JOHN E ,  WINARSKI DANIEL J

IPC: H04N5/85 ,  G06F3/14 ,  G11B7/005 ,  G11B7/007 ,  G11B19/02 ,  G11B27/10 ,  G11B27/30 ,  H04N5/93

Abstract: When beginning the display of material on DVD one of a plurality of video programmes on the disc is automatically selected. A bit is provided on every DVD memory sector header to indicate the type of information contained in the main data portion of the frame A vector of video clips are stored on the DVD and the DVD drive examines the bit and uses a logic device to determine which clip is to be played. Such video clips may include cartoons, commercials, previews and a film or movie, the logic device allowing for random or specific selections to be played at a predetermined time such as during the flipping over of a dual sided DVD. The automatic choosing of a video programs comprises determining a value from the equation Rpick = RANDOM(Npick) (311) where RANDOM is the function for picking a number and Npick is the argument for said RANDOM function; seeking to track number Nzero + Rpick and playing that track (312) where Nzero is a first track containing one of the video programmes.