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1. 发明专利

JPH10233572A PRINTED-WIRING BOARD 失效
公开(公告)号：JPH10233572A
公开(公告)日：1998-09-02
申请号：JP3737997
申请日：1997-02-21
申请人： HITACHI LTD , HITACHI VIDEO IND INF SYST INC
发明人： KOBAYASHI SHINJI , NAKANO YUJI , NAGIRI TOMOHARU
IPC分类号： H05K3/34 , H05K3/12
摘要： PROBLEM TO BE SOLVED: To reduce the width direction of a solder paste and to suppress a bridge between adjacent soldering pads by a method wherein a silk-screen printed part is formed around surface mounting-type narrow-pitch IC pads on the board. SOLUTION: Surface mounting-type narrow-pitch IC pads 1 are provided, a silk-screen printed part 2 is formed on a resist 3 at the pads 1, a metal mask 5 is placed on a board 4, a solder paste 6 is moved in the direction of an arrow A by using a squeegee 7, and the solder paste 6 is supplied onto the IC pads from opening parts 8 in the metal mask 5. At this point, the thickness of the solder paste to be supplied is added to the thickness (d) of the metal mask 5, and the solder paste is supplied excessively by the difference (f) between the thickness portion (c) of a resist printed part plus the silk-screen printed part and the thickness (e) of the soldering pads 1. Thereby, the width direction of the solder paste can be reduced, and it is possible to prevent a solder bridge between the adjacent soldering pads 1.

2. 发明专利

JP2003262919A PROJECTION OPTICAL SYSTEM AND PROJECTION TYPE IMAGE DISPLAY DEVICE USING THE SAME 审中-公开
公开(公告)号：JP2003262919A
公开(公告)日：2003-09-19
申请号：JP2003008999
申请日：2003-01-17
申请人： HITACHI LTD
发明人： HIRATA KOJI , NAKAGAWA KAZUNARI , NAGIRI TOMOHARU , OGURA NAOYUKI , NAGAGAWA CHIHIRO
IPC分类号： G02B13/16 , G02B13/18 , G02B27/18 , G03B21/00
摘要： PROBLEM TO BE SOLVED: To improve focus performance and contrast performance by suppressing a decrease in the lightness of display video and to improve the quality of the display video. SOLUTION: For, for example, a concave lens element 6a of a projection lens 7a of a projection tube 1a for red, is provided with a light transmitting means which has relation TRS≤TRL/3, where TRS is the transmissivity of the wavelength of subpeak energy in a short-wavelength range to the wavelength of the peak energy of a spectrum distribution of red video light from the projection tube 1a and TRL is the light transmissivity of the wavelength of the subpeak energy in a long-wavelength range, and for example, a concave lens element 6b of a projection lens 7b of a projection tube 1b for green, is provide with a light transmitting means which has relation TGL≤TGS/2, where TGS is the light transmissivity of the wavelength of the subpeak energy in a short- wavelength range to the wavelength of the peak energy of green video light from the projection tube 1b and TGS is the light transmissivity of the wavelength of the subpeak energy in a short-wavelength range. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2001086526A PROJECTION TYPE DISPLAY DEVICE 失效
公开(公告)号：JP2001086526A
公开(公告)日：2001-03-30
申请号：JP25714999
申请日：1999-09-10
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： WATANABE TOSHIMITSU , NAGIRI TOMOHARU , MATSUMI KUNINORI
IPC分类号： H04N9/28 , H04N9/31
摘要： PROBLEM TO BE SOLVED: To reduce the cost of a detector to detect an offset of convergence. SOLUTION: Detection mirrors 14-21 are placed around a screen 2 and ends of the screen 2 requiring a photo sensor 4 and the detection mirrors 14-21 reflect a pattern video image light to measure a convergence offset projected from cathode ray tubes 8, 9, 10, the photo sensor 4 placed at a prescribed position receives this reflected light to read position information of electron beams corresponding to each color and to detect the convergence offset.

4. 发明专利

JP2004080609A Convergence correction circuit and display device using it 审中-公开
标题翻译：综合校正电路和使用它的显示设备
公开(公告)号：JP2004080609A
公开(公告)日：2004-03-11
申请号：JP2002240647
申请日：2002-08-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGIRI TOMOHARU , YOSHIZAWA KAZUHIKO , WATANABE TOSHIMITSU , MATSUMI KUNINORI
IPC分类号： H04N9/28
摘要： PROBLEM TO BE SOLVED: To reduce the cost of a convergence correction circuit by making a working memory unnecessary.
SOLUTION: The convergence correction circuit is provided with a muting circuit which outputs the convergence correction data of each channel read out from a memory correspondingly to scanning by turning on/off the data, forms a correction waveform for each channel by independently controlling the muting circuit at every channel by means of a control means, such as the CPU etc., and forms a driving signal used for performing convergence correction based on the correction waveform. When the correction circuit corrects convergence correction data, the circuit temporarily stores intermediate corrected results in a memory of a color other than the color to be subjected to convergence adjustment.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过不需要工作记忆来降低会聚校正电路的成本。解决方案：会聚校正电路设置有静噪电路，其通过接通/关闭数据来输出从与存储器相对应的扫描读出的每个通道的会聚校正数据，通过独立控制形成每个通道的校正波形通过诸如CPU等的控制装置在每个通道处的静噪电路，并且基于校正波形形成用于执行会聚校正的驱动信号。当校正电路校正收敛校正数据时，电路将中间校正结果临时存储在不同于要进行会聚调整的颜色之外的颜色的存储器中。版权所有（C）2004，JPO

5. 发明专利

JP2003009169A Digital convergence correction apparatus and display using the same 审中-公开
标题翻译：数字整合校正装置和使用它的显示
公开(公告)号：JP2003009169A
公开(公告)日：2003-01-10
申请号：JP2001185938
申请日：2001-06-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUMI KUNINORI , YOSHIZAWA KAZUHIKO , WATANABE TOSHIMITSU , NAGIRI TOMOHARU
IPC分类号： H04N9/28 , G09G1/10 , G09G1/28
摘要： PROBLEM TO BE SOLVED: To provide a digital convergence correction apparatus for reducing the disturbance in convergence waveforms being generated when a CPU operates a memory.
SOLUTION: The digital convergence correction apparatus comprises a memory 13, an address generator 11 for generating a first address signal, a CPU 18 for generating a second address signal for reading/rewriting convergence correction data, an address switcher 12, a data switcher 14, and a latch 15 for retaining the convergence correction data. In the digital convergence correction apparatus, when the CPU 18 switches the address switcher 12 and the data switcher 14 to a terminal (b) to operate the memory 13 where convergence correction data are stored in convergence adjustment, the CPU 18 stops a latch pulse LP, and retains the immediately preceding convergence correction data in the latch 15.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种用于减少当CPU操作存储器时产生的会聚波形的干扰的数字会聚校正装置。解决方案：数字会聚校正装置包括存储器13，用于产生第一地址信号的地址发生器11，用于产生读/重写会聚校正数据的第二地址信号的CPU18，地址切换器12，数据切换器14，以及用于保持会聚校正数据的锁存器15。在数字会聚校正装置中，当CPU 18将地址切换器12和数据切换器14切换到终端（b）以操作收敛校正数据在会聚调整中的存储器13时，CPU 18停止锁存脉冲LP 并且将紧接在前的会聚校正数据保持在锁存器15中。

6. 发明专利

JPH05252543A 失效
公开(公告)号：JPH05252543A
公开(公告)日：1993-09-28
申请号：JP4489692
申请日：1992-03-02
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： MATSUMI KUNINORI , KIMURA YUICHIRO , NOGUCHI TAIJI , OSAWA MICHITAKA , NAGIRI TOMOHARU , SATO KENJI
IPC分类号： H04N9/28 , H04N17/04
摘要： PURPOSE:To recognize an arbitrary convergence adjustment area at the inside and outside of a screen by an adjusting person without increasing the cost of a circuit, or deteriorating the workability of a convergence adjustment. CONSTITUTION:At the time of operating the convergence adjustment of an area at the outside of the screen, a cursor is moved to the area adjacent to the area for the convergence adjustment by the cursor movement key of an instruction inputting device 6. The instruction of the convergence adjustment is transmitted by the outside-screen correction data control key of the instruction inputting device 6. A CPU 5 receives the instruction, operates the convergence correction data of the area at the outside of the screen adjacent to the area where the cursor is displayed, and prepares the new convergence correction data.

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