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1. 发明专利

JPH10326071A COMPUTER HOLOGRAM DISPLAY METHOD AND DEVICE BY HIGH RESOLUTION OF GAZING POINT AND RECORD MEDIUM RECORDING THE METHOD 失效
公开(公告)号：JPH10326071A
公开(公告)日：1998-12-08
申请号：JP35059597
申请日：1997-12-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIKOSHI TSUTOMU , HIGUCHI KAZUTO , AKIMOTO TAKAAKI , SUZUKI SATOSHI
IPC分类号： G03H1/08 , G03H1/22 , G06T17/00 , G11C13/04
摘要： PROBLEM TO BE SOLVED: To provide a computer hologram display method and device realizing a stereoscopic video display having high definition and high presence efficiently based on the visual characteristic of a human being. SOLUTION: A display object management means 23 describes the whole of a display object at plural resolution levels. At first, a calculation object detecting means 22 reads out the description of a coarse resolution level to calculate interference frings on a hologram surface and displays them and also makes the frings to be stored in an interference fring storage part 25. Next, at the time of performing a hologram display, the gazing point of an observer is calculated by a line of sight/focus detecting means 21. Next, a calculation object detecting means 22 detects a gazing point object space from the gazing point of the observer and an interference fring calculating means 24 reads out the description being at a high resolution level as to the detected object to recalculate interference frings. An interference synthesis means 26 synthesizes the recalculated interference frings and the pre-displayed interference frings to display them on an interference fring display means 27.

2. 发明专利

JPH0844279A HOLOGRAPHY VIDEO REPRODUCING DEVICE AND DISPLAY DEVICE 失效
公开(公告)号：JPH0844279A
公开(公告)日：1996-02-16
申请号：JP18202694
申请日：1994-08-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIGUCHI KAZUTO
IPC分类号： G02B5/32 , G03H1/22
摘要： PURPOSE:To provide a holography video reproducing device which enables the eyes to be focused on a reproduced image without being hindered by the cover glass surface of an observation window and ambient frame at the time of starting observation and elimination the need for bringing the face close to the observation window and bringing part of the face or the nose into contact with the wall surface of the device. CONSTITUTION:Reproducing light 3 is cast to the hologram 4 from a direction having a conjugation relation with the incident direction of reference light at the time of recording. At this time, the lateral or vertical relation of the luminous flux to generate a real image generated from the hologram 4 is switched and the progressing direction of the luminous flux is changed by a first mirror 6. The luminous flux is partly reflected by a half mirror 7 and the reflected luminous flux is made incident on a recurrent screen 8, by which the reproduced image 10 is obtd. Since this recurrent screen 8 turns back and reflects the luminous flux of the reproduced image 10 to the incident direction, the reproduced image 10 is observed through the half mirror 7. The position of the eyes are settable in the space where no obstructions exist in such a manner, by which the observer's eyes are focused on the reproduced image 10 from the beginning.

3. 发明专利

JPH03187699A STEREOGRAPHIC IMAGE DISPLAY DEVICE 失效
公开(公告)号：JPH03187699A
公开(公告)日：1991-08-15
申请号：JP32611289
申请日：1989-12-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIGUCHI KAZUTO , KOMATSU TADAHIKO , KOMIYA KAZUMI , OBA YUJI , AKIYAMA KENJI , SHIWA SHINICHI , TETSUYA SHINJI , KAMIHIRA KAZUTAKE , ISHIBASHI MORIHITO , TASHIRO MITSUSHI
IPC分类号： G03B35/24 , G03C9/00 , H04N13/04
摘要： PURPOSE:To perform stereographic image display without applying limitation on a range being observed as stereographically by adjusting the progressive direction of light emitted from an image display plane at every picture element with a control means. CONSTITUTION:Each picture element 2 is comprised of light emitting elements 3R, 3G, and 3B having directivity, and a micro driving element 6 which changes the light emitting directions of the light emitting elements 3R, 3G, and 3B, and each picture element 2 is displayed as an image for right and an image for left alternately on a stereographic image display device 1. The head part of an observer 80 is detected with a sensor 71, and position information is analyzed with the control means 72 of the micro driving element 6, and fine adjustment such that light is emitted from a display element for right image to the direction of right eye of the observer 80, and it is emitted from the display element for left image to the direction of left eye of the observer 80 is performed. By performing such fine adjustment successively, only the right image can be always observed with the right eye of the observer 80, and the left image with the left eye. Thereby, a stereographic feeling can be obtained from every position of the observer 80.

4. 发明专利

JPH02305661A PERFECTING RECORDER 失效
公开(公告)号：JPH02305661A
公开(公告)日：1990-12-19
申请号：JP12681489
申请日：1989-05-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OTA MASATAKA , HOSHINO HIROYUKI , MENTANI MAKOTO , HIGUCHI KAZUTO
IPC分类号： B41J3/60 , B41J2/415 , B41J17/02 , G03G15/00 , G03G15/05
摘要： PURPOSE:To apply recording also on a surface reverse to an image recording surface on a recording medium by mounting a recording mechanism for conducting recording on the surface reverse to the image recording surface. CONSTITUTION:When paper 1 is fed rightward by a paper feed drum 13 and a pressure roller 14, a latent image is formed on the paper 1 with positive or negative electric charges by chargers 11, 12. The latent image on the paper 1 is developed in the process that the paper 1 is further fed and dipped in a developer 5 and a toner is attracted to the electric charges on the latent image part. Four units A-D each constructed as the above are provided so as to correspond to four color toners of Cyan, Magenta, Yellow, and Black. A rear-surface recording mechanism consisting of a recording head 17 and an ink ribbon 18 for the rear surface is disposed before the first unit A. In this manner, while not only character information to be recorded on the rear surface but also a register mark for images are recorded by said mechanism and read by sensors 19A-19D, a color image can be recorded.

5. 发明专利

JPH01318393A MOVING PICTURE HOLOGRAPHY TRANSMISSION SYSTEM 失效
公开(公告)号：JPH01318393A
公开(公告)日：1989-12-22
申请号：JP14998888
申请日：1988-06-20
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIGUCHI KAZUTO
IPC分类号： G03H1/00 , H04N13/00
摘要： PURPOSE:To reduce the transmission information volume without damaging the three-dimensional effect by rotating a filter to a hologram to take out holography information where the transmission direction is successively varied and transmitting this information to the reception side. CONSTITUTION:Holography information is transmitted through only parts corresponding to transparent parts of a filter 20 and is inputted to an image pickup means 7 and is sent to the reception side through a transmission line 8. The filter 20 is successively rotated at a required angle to a hologram 6 for every one-frame components of hologram picture to be transmitted, and the filter 20 is returned to the original angular position after a required number of hologram pictures are transmitted. Consequently, detailed information in all directions can be transmitted by elapse of one cycle though detailed information only in a specific direction is transmitted with one hologram picture. Thus, the time of one cycle is set to a value approximating the after-image time of human eyes to transmit information in all directions with respective hologram pictures, and a picture quality, namely, the three dimensional effect which is not inferior to that obtained at the time of reproducing is obtained.

6. 发明专利

JPS606468A INK RECORDING HEAD 失效
公开(公告)号：JPS606468A
公开(公告)日：1985-01-14
申请号：JP11265283
申请日：1983-06-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIGUCHI KAZUTO , ICHINOSE SUSUMU , MATSUKI MAKOTO
IPC分类号： B41J2/06 , B41J2/20 , B41J3/04
摘要： PURPOSE:To make it possible to stably perform recording while preventing the destruction of an electrode, in an ink jet recording apparatus, by providing a means for detecting the drying-up of ink at a slit shaped opening as an ink jet orifice. CONSTITUTION:Two detection electrodes 9 are provided to the inner wall of an ink jet orifice lower plate 2b so as to leave a definite distance therebetween. The part of this inner wall having no recording electrode 3 is not entirely an insulator but the electric resistance between both detection electrodes 9 rises when ink 8 is dried up as compared with the electric resistance when the ink 8 is filled between both electrodes and, therefore, a resistance value is measured at a definite sampling cycle prior to starting recording or during recording by a resistance measureing apparatus 10. When said value exceeds a set value, the drying-up of the ink is judged and a control signal is sent to a drive power source 6 to stop the output of a high voltage pulse and, at the same time, an alarm is issued by an alarm 12. by this method, the detection of the drying-up of the ink is succeedingly performed at the point of arbitrary time regardless of recording operation and not only discharge between the recording electrodes but also the destruction of the electrodes caused by the discharge can be prevented.

7. 发明专利

JPS58173679A INK RECORDING HEAD 失效
公开(公告)号：JPS58173679A
公开(公告)日：1983-10-12
申请号：JP5618882
申请日：1982-04-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ICHINOSE SUSUMU , MATSUKI MAKOTO , HIGUCHI KAZUTO
IPC分类号： B41J2/06 , B41J2/385
摘要： PURPOSE:To facilitate the injection of ink and to simplify a drive circuit, in a recording head having plural electrodes arranged thereto and a slit like opening, by a method wherein the ink having magnetism is used and the electrodes are magnetically energized. CONSTITUTION:In the recording head having a slit like opening 1 and plural electrodes 8 arranged to the inner wall of the lower plate thereof in parallel relation to each other, as each electrode 8, one comprising a hard magnetic material and energized magnetically is used and, as an ink, one having magnetism imparted by mixing a magnetic powder therein is used. By this constitution, the ink is attracted by the electrodes and the meniscus 9 of the ink protruded from each electrode 8 in the opening part 1 is formed. Therefor, when high voltage is selectively applied to the electrodes 8, the meniscuses 9 protruded corresponding to electrostatic force generated between the electrodes 8 and a conductor 4 are easily injected to carry out recording with respect to recording paper 5.

8. 发明专利

JPH1152822A COMPUTER HOLOGRAM DISPLAY METHOD USING COMPLEX AMPLITUDE AND APPARATUS THEREFOR 失效
公开(公告)号：JPH1152822A
公开(公告)日：1999-02-26
申请号：JP21300597
申请日：1997-08-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIKOSHI TSUTOMU , HIGUCHI KAZUTO , AKIMOTO TAKAAKI , SUZUKI SATOSHI
IPC分类号： G03H1/08 , G03H1/22 , G03H1/26
摘要： PROBLEM TO BE SOLVED: To provide a computer hologram display method capable of presenting clearer hologram reconstructed images and an apparatus therefor. SOLUTION: The interference fringes of the light from an object and reference light are computed as complex amplitudes in an interference fringe computing means 21. The real number component and virtual number component of the computed interference fringes are occasionally stored and managed. The real number component and virtual number component of the interference fringes which are paired are fetched out of an interference fringe holding means 22 and are displayed on two displays in an interference fringe display means 23. The reconstructing light R formed by one light source is separated to two reconstructing light rays R1 , R2 and the one reconstructing light R1 is cast to the interference fringes of the real number component and another reconstructing light R2 is modulated to the reconstructing light advanced in phase by π/2 via a phase modulating means 25 in a reconstructing light irradiation means 24. The interference fringes of the virtual number component are irradiated with such reconstructing light and the reconstructing light rays are synthesized and are observably presented.

9. 发明专利

JPH10333535A COMPUTER HOLOGRAM GENERATION METHOD AND DEVICE 失效
公开(公告)号：JPH10333535A
公开(公告)日：1998-12-18
申请号：JP13737197
申请日：1997-05-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIKOSHI TSUTOMU , HIGUCHI KAZUTO , AKIMOTO TAKAAKI , SUZUKI SATOSHI
IPC分类号： G03H1/08
摘要： PROBLEM TO BE SOLVED: To provide the generation method and device of a computer hologram capable of eliminating the waste of calculation and more efficiently and quickly calculating interference fringes. SOLUTION: A three-dimensional space is divided into small voxels, and when light from the light source of a specified array is propagated through the space, a reference volume for which the amplitude value of the wave front of the light in the respective voxels is held in the voxels is generated (101-102). The position relation (the inclination of a surface or the like) of the respective patches of an object described by a polygon model and a hologram surface is calculated (103-105) and the reference volume is cut at a cutting plane H' for forming the same inclination as the inclination of the hologram surface at the time of converting the patch to a reference position (106-107). By projecting the values of the respective elements of the cutting surface S and adding the value of the cutting surface S to the hologram H (108-110), in a hologram generation stage, the processing of generating the wave front is eliminated and a calculation amount is substantially reduced.

10. 发明专利

JPH10288938A METHOD AND DEVICE FOR GENERATING COMPUTER HOLOGRAM 失效
公开(公告)号：JPH10288938A
公开(公告)日：1998-10-27
申请号：JP9856697
申请日：1997-04-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIKOSHI TSUTOMU , HIGUCHI KAZUTO , AKIMOTO TAKAAKI , SUZUKI SATOSHI
IPC分类号： G03H1/08 , G03H1/26
摘要： PROBLEM TO BE SOLVED: To rapidly generate a computer hologram based on a technique of volume rendering by assuming a point light source having an amplitude value on a position of voxel and calculating a wave front from an object on a viewpoint by its point light source. SOLUTION: A display objective space is controlled as a volume data space (a set voxel), and the attribute information of the object is registered on respective voxel. Then, a line of sight when assuming there is a viewpoint on the hologram is decided, and the scanning is performed on the line of sight, and whether or not the line of sight crosses with the voxel in which the object exists is detected, and the point light source is assumed on its position for the crossed voxel, and the wave front on the hologram is calculated. At this time, the amplitude value is changed according to the attribute (e.g. transparency) of the object registered on the voxel. In this device, a line of sight cross object detection means 74 detects the voxel crossing with the set line of sight. A line of sight setting means 75 sets the direction of the line of sight. A wave front calculation means 76 calculates the wave front from the object and the wave front of reference light.

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