公开(公告)号：US3787964A

公开(公告)日：1974-01-29

申请号：US3787964D

申请日：1971-12-23

Applicant: IBM

Inventor： SIMON P ,  JONES R

IPC: G11B5/17 ,  G11B5/31 ,  G11B5/42

CPC classification number: G11B5/3133 ,  G11B5/17 ,  G11B5/3166 ,  Y10T29/49004 ,  Y10T29/49036 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49064

Abstract: This disclosure relates to a method for manufacturing a magnetic head. The steps of the method comprise forming a transformer having a first magnetic layer, a primary winding, a secondary winding separated from the primary winding, the primary and secondary windings being disposed on the first magnetic layer, and a second magnetic layer disposed over the primary and secondary windings. The first and second magnetic layers encircle portions of the primary and secondary windings thus forming a continuous magnetic path. Tests determinative of its magnetic properties are made on the transformer. Thereafter, the transformer is severed between the primary and the secondary windings and the secondary is discarded. The primary is then lapped to form a thin-film magnetic head.

Abstract translation: 本公开涉及一种用于制造磁头的方法。 该方法的步骤包括形成具有第一磁性层，初级绕组，与初级绕组分离的次级绕组，初级和次级绕组设置在第一磁性层上的变压器，以及设置在初级绕组上的第二磁性层 和次级绕组。 第一和第二磁性层围绕初级和次级绕组的部分，从而形成连续的磁路。 在变压器上进行其磁特性的测定。 此后，变压器在初级绕组和次级绕组之间被切断，次级绕组被丢弃。 然后将主体研磨以形成薄膜磁头。

公开(公告)号：US3778819A

公开(公告)日：1973-12-11

申请号：US3778819D

申请日：1972-11-17

Applicant: IBM

Inventor： BHAGAWAN V ,  JONES R ,  MCDOWELL A ,  RUPP B ,  WHITTAKER R ,  MINE G ,  REMSBURGER L

IPC: G06F3/02 ,  G06F3/023 ,  H03M11/14 ,  H03M11/18 ,  H04L13/16

CPC classification number: H03M11/18

Abstract: A circuit is provided for operating a keyboard in a selected one of four character sets: upper and lower case Latin and upper and lower case Katakana. The circuit responds to signals produced by the familiar Shift and Lock keys of a conventional keyboard. One of the shift keys is designated a Latin shift key and the other is designated a Katakana shift key. Depressing a shift key momentarily sets the keyboard to operate in the lower case of the character set identified by the shift key. For upper case, the operator either sets the shift Lock or holds the appropriate shift key while striking a character key. A specific logic circuit is disclosed.

Abstract translation: 提供一种用于操作四个字符集中所选择的一个键盘的电路：大小写拉丁语和大小写片假名。 电路响应常规键盘熟悉的Shift和Lock键产生的信号。 其中一个换档键被指定为拉丁移位键，另一个被指定为片假名移位键。 按下shift键可以暂时将键盘设置为在由Shift键识别的字符集的小写中操作。 对于大写字母，操作员可以设置移位锁定或保持适当的移位键同时敲击字符键。 公开了一种特定的逻辑电路。