公开(公告)号：US3633996A

公开(公告)日：1972-01-11

申请号：US3633996D

申请日：1970-03-04

Applicant: IBM

Inventor： LEAN ERIC G ,  POLE ROBERT V ,  TSENG SAMUEL C

IPC: G02F1/33 ,  G02F1/16

CPC classification number: G02F1/33

Abstract: A system for deflecting a light beam in two dimensions is described. The system includes a piezoelectric crystal having an acoustic surface wave transducer on its surface for propagating acoustic surface waves on the crystal. Means are provided for applying a nonuniform electric field to the crystal to vary the effective stiffness constant of the crystal in a nonuniform manner. When a beam of laser light is directed onto the crystal it is deflected in one dimension as a function of the frequency of the acoustic wave produced by the transducer and in a second dimension as a function of the nonuniform electric field.

Abstract translation: 描述了一种用于在两个维度上偏转光束的系统。 该系统包括在其表面上具有声表面波换能器的压电晶体，用于在晶体上传播声表面波。 提供了用于向晶体施加不均匀电场的装置，以不均匀的方式改变晶体的有效刚度常数。 当激光束被引导到晶体上时，其作为由换能器产生的声波的频率的函数在一维中被偏转，并且在作为不均匀电场的函数的第二维度中被偏转。

公开(公告)号：JPS60241086A

公开(公告)日：1985-11-29

申请号：JP1565685

申请日：1985-01-31

Applicant: IBM

Inventor： CHEN SHU-CHUN ,  TSENG SAMUEL C

IPC: G09G5/26 ,  G09G5/24

公开(公告)号：FR2315106A1

公开(公告)日：1977-01-14

申请号：FR7605139

申请日：1976-02-17

Applicant: IBM

Inventor： TSENG SAMUEL C ,  REISINGE AXEL R

IPC: G02B6/12 ,  G02B26/08 ,  G02F1/03 ,  G02F1/05 ,  G02F1/09 ,  G02F1/095 ,  G02F1/313 ,  G02B5/14

Abstract: A switching device for switching an optical beam between first and second outputs each associated with first and second paths in a thin-film optical wave guide supported on a substrate. Switching occurs by reason of mode conversion in a first or second path as determined by the direction of a variable magnetic field. A common optical path is defined, in said wave guide, by a first optical coupler, for coupling an optical beam into or out of said wave guide, and a beam splitter. First and second optical paths are defined, in the same wave guide, between the beam splitter and second and third couplers each co-linear with said beam splitter. At least a portion of each of said first and second optical paths include means for periodically varying the magnetization in said path. The wave guide is subjected to a d.c. magnetic field in the plane of the wave guide and at an angle with respect to both said first and second paths. Preferably the first and second paths are perpendicular and the d.c. field makes a 45 DEG angle with each of said paths. A variable magnetic field is superimposed on the d.c. field and is directed perpendicular to the d.c. field, in the plane of the wave guide. The variable magnetic field may be energized in one of two senses, 180 DEG apart, each, of course, perpendicular to the d.c. field direction. Analyzers may be located adjacent the second and third couplers to comprise the outputs referred to above.

公开(公告)号：CA1140679A

公开(公告)日：1983-02-01

申请号：CA364465

申请日：1980-11-12

Applicant: IBM

Inventor： GOERTZEL GERALD ,  POWELL CARL G ,  TSENG SAMUEL C

IPC: G09G5/28 ,  B41B19/01 ,  G06K15/10 ,  G06T11/20 ,  G09G5/24 ,  G06F3/12 ,  G09G3/20

Abstract: COMPLEX CHARACTER GENERATOR A character compaction and generation method and apparatus which is particularly adapted to the generation of complex characters such as Kanji characters. A dot matrix defining a given character is compacted into a sparse matrix, with the original character being reconstructed for printing or display from the compacted character defined in the sparse matrix. Each character in the complex character set is compacted and stored in memory one time only, with decompaction being performed each time a given character is to be generated. A set of symbols are defined to represent different patterns which occur frequently in the entire complex character set. Different combinations of the symbols define a given character. The information stored for each sparse matrix representing a given character is comprised of each symbol in the sparse matrix, its position, and its size parameter if the symbol represents a family of patterns which differ only in size. Three groups of different patterns are defined which occur frequently in the complex character set, namely, a first group which has a fixed size for each pattern, a second group which has one size parameter which must be specified for each pattern, and a third group which has a plurality of size parameters which must be specified for each pattern. Certain ones of the characters have elements of different patterns which overlap, such that the character may be encoded utilizing less symbols, and accordingly less bytes of data. A given pattern may be generated at the same time another pattern is being decoded. YO978-010

公开(公告)号：CA1186946A

公开(公告)日：1985-05-14

申请号：CA425599

申请日：1983-04-11

Applicant: IBM

Inventor： FLEEK ARTHUR E ,  TSENG SAMUEL C

IPC: B41J2/31 ,  B41J9/12 ,  B41J9/26 ,  B41J9/44 ,  G06K15/10 ,  B41J3/12

Abstract: VARIABLE SPEED PRINTING FOR DOT MATRIX PRINTERS A variable speed printing (VSP) adaptor for a dot matrix printer which includes a monitoring means having a plurality of devices each capable of assuming one of two states. The monitoring means monitors the state of the pattern data to be printed, and, in the preferred embodiment, the monitoring means comprises a counter which is preset with a number equal to the number of column scans with a dot print line. The pattern data to be printed is scanned in a forward direction, i.e., in the normal printing direction starting at the first print position and the count in the counter is decremented one count for each column data scanned. During the time interval between when this data is latched and the actual hammer actuation, the pattern data is scanned in the backward direction starting at the last print position. Each time the column data for a backward scan is zero, i.e., no dot to be printed, prior to sensing a non-zero column, the count in the counter is decremented one count. The printing operation continues in the interleaved forward/backward scans until the count in the counter reaches a reference level such as zero. Upon sensing this reference level in the counter, a control signal is generated which indicates that the printing of the dot row is complete and initiates movement of the paper to the next dot row position. In an alternate embodiment, the monitoring means comprises a random access storage device.

公开(公告)号：FR2412890A1

公开(公告)日：1979-07-20

申请号：FR7833619

申请日：1978-11-21

Applicant: IBM

Inventor： TSENG SAMUEL C

IPC: B41J2/485 ,  B41B19/01 ,  B41B27/28 ,  G06K15/10 ,  G06K15/12 ,  G09G5/24 ,  G09G5/28 ,  H03M7/42 ,  G06F15/20 ,  B41J7/70

Abstract: A character compaction and generation method and apparatus which is particularly adapted to the generation of complex characters such as Kanji characters. A dot matrix defining a given character is compacted into a sparse matrix, with the original character being reconstructed for printing or display from the compacted character defined in the sparse matrix. Each character in the complex character set is compacted and stored in memory one time only, with decompaction being performed each time a given character is to be generated. A set of symbols are defined to represent different patterns which occur frequently in the entire complex character set. Different combinations of the symbols define a given character. The information stored for each sparse matrix representing a given character is comprised of each symbol in the sparse matrix, its position, and its size parameter if the symbol represents a family of patterns which differ only in size.