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41. 发明申请

WO1991006097A1 DEVICE FOR ADJUSTING FOCAL POINT OF AN OPTICAL PICKUP DEVICE 审中-公开
标题翻译：用于调整光学拾取器件的焦点的器件
公开(公告)号：WO1991006097A1
公开(公告)日：1991-05-02
申请号：PCT/JP1990001325
申请日：1990-10-15
申请人： COPAL COMPANY LIMITED , FUJITSU LIMITED , HOSOBATA, Nobuhiko , YOSHIKAWA, Yukio , TAKAGI, Masaaki
发明人： COPAL COMPANY LIMITED , FUJITSU LIMITED
IPC分类号： G11B07/09
CPC分类号： G11B11/10576 , G11B7/0912 , G11B7/093 , G11B7/0932 , G11B7/094 , G11B7/0943 , G11B7/13 , G11B7/133 , G11B11/105
摘要： A device for adjusting the focal point of an optical pickup device in which the light reflected by a recording medium is focused at points of two systems using an optical branching filter, first and second light detectors are disposed, respectively, in front of one focal point and at the back of the other focal point, and a focal point adjusting mechanism is servo-controlled in response to the outputs from the two light detectors. Each of the light detectors has a central light-receiving surface on the optical axis and a peripheral light-receiving surface in the periphery of the central light-receiving surface. According to a first method, the focal point adjusting mechanism is servo-controlled such that the deviation will become zero between the ratio of the amount of light received in the center to the total amount of light received in the center and periphery of the first light detector and the ratio of the amount of light in the center to the total amount of light in the center and periphery of the second light detector. Even if the two detectors receive different amounts of light, the difference is cancelled between the denominator and the numerator of the ratio of the amount of light in the center to the total amount of light in the center and periphery, and the device is not affected by the imbalance in the amount of light. According to a second method, the focal point adjusting mechanism is basically servo-controlled based on the difference between the amounts of light received in the centers of the two light detectors. Here, the difference in the total amount of light received by the two light detectors is calculated throughout all stages, and the difference is used to calculate a correction value multiplied by the component ratio of the amount of light in the center to the total amount of the light received in a focused condition. Since the calculated correction value is subtracted from the difference in the amount of light received in the centers, the servo output does not contain imbalance in the amount of light falling on the light detectors of the two systems, and the device is not affected by the imbalance in the amount of incident light.

42. 发明申请

WO1991003872A1 CONVERSION ADAPTOR FOR WAVE DIGITAL FILTER AND BALANCING NETWORK USING WAVE DIGITAL FILTER 审中-公开
标题翻译：波形数字滤波器和平衡滤波器的转换适配器使用波数字滤波器
公开(公告)号：WO1991003872A1
公开(公告)日：1991-03-21
申请号：PCT/JP1990001120
申请日：1990-08-31
申请人： FUJITSU LIMITED , KAKUISHI, Mitsuo
发明人： FUJITSU LIMITED
IPC分类号： H03H17/02
CPC分类号： H03H17/0201
摘要： A balancing network of wave digital filter type consisting of three-terminal-pair conversion adaptors (21 to 26) connected in cascade each of which having a capacitor (C) and a resistor (R) as constituent elements to exhibit a filter operation function. Based on the fact that no wave is reflected by a terminal pair other than the two terminal pairs for cascade connection of the conversion adaptors (22, 24, 26) that include the resistor (R), the above terminal pair is excluded and these adaptors are combined with the neighboring conversion adaptors (21, 23, 25) that include the capacitor (C) in order to form a new three-terminal-pair-combined conversion adaptor (41) which realizes a filter function with an operation amount which is smaller than the sum of operation amounts of the three-terminal-pair conversion adaptors (21 to 26).

43. 发明申请

WO1991003105A1 DIGITAL-TO-ANALOG CONVERTER 审中-公开
标题翻译：数字到模拟转换器
公开(公告)号：WO1991003105A1
公开(公告)日：1991-03-07
申请号：PCT/JP1990001055
申请日：1990-08-20
申请人： FUJITSU LIMITED , TOKUHIRO, Noriyuki
发明人： FUJITSU LIMITED
IPC分类号： H03M01/70
CPC分类号： H03M1/70 , H03M1/808
摘要： A digital-to-analog converter of the current addition type using weighting resistors has an input resistance network (4) that produces a resistance corresponding to an input digital signal that consists of predetermined bits, and an adder (3) that has a first input terminal connected to the input resistance network and a second input terminal set to a reference potential to add signals on the first and second input terminals. The adder has an output terminal that outputs the result of addition which corresponds to an analog signal that is corresponded to said input digital signal. The digital-to-analog converter is placed between the first input terminal and the output terminal of the adder. This converter further includes a feedback resistance network (5) for producing a feedback resistance corresponding to a control signal indicative of the magnitude of said input digital signal, and a feedback resistance network control circuit (7) responsive to said input signal for producing said control signal indicative of the magnitude of said input digital signal.

44. 发明申请

WO1990010993A1 VIDEO/AUDIO MULTIPLEX TRANSMISSION SYSTEM 审中-公开
标题翻译：视频/音频多路复用传输系统
公开(公告)号：WO1990010993A1
公开(公告)日：1990-09-20
申请号：PCT/JP1990000356
申请日：1990-03-16
申请人： FUJITSU LIMITED , DANGI, Ryoichi , FUJIYAMA, Takehiko , USUI, Toshiaki , KAWABATA, Takashi
发明人： FUJITSU LIMITED
IPC分类号： H04N07/15
CPC分类号： H04N21/2368 , H04B14/046 , H04N7/148 , H04N7/15 , H04N7/54 , H04N19/152 , H04N19/50 , H04N21/2335 , H04N21/23439 , H04N21/242 , H04N21/2662 , H04N21/4341
摘要： A system for transmitting and receiving multiplexed video and audio signals. The video and audio signals are balanced to enhance the transmission quality and to use the transmission capability fully under the condition of a limited transmission capacity. At least one of the information contents of the video and audio signals is detected. According to this detection, the transmission contents are controlled in respect to the transmission ratio of the video and audio signals and the correction of the difference between the processing speeds of the two signals. Hence, the transmission quality is improved, especially in TV conference systems having only insufficient transmission capacities.

45. 发明申请

WO1990008441A1 EARTH DETECTING CIRCUIT 审中-公开
标题翻译：接地检测电路
公开(公告)号：WO1990008441A1
公开(公告)日：1990-07-26
申请号：PCT/JP1990000036
申请日：1990-01-12
申请人： FUJITSU LIMITED , KINOSHITA, Kazumi , TAKATO, Kenji , TOJO, Toshiro
发明人： FUJITSU LIMITED
IPC分类号： H04M03/18
CPC分类号： H04M19/008 , H04M3/30 , H04M19/006
摘要： This invention relates to an earth detecting circuit for a long-distance subscriber's circuit in a small-capacity digital electronic switch-board. A DC/DC converter of a power source for supplying electric power is stopped when an earth is detected. Upon receiving a stop signal, the DC/DC converter converts the source voltage for the subscriber's circuit into the voltage of the system power source for the switch-board, i.e., the voltage before the conversion by the DC/DC converter. The supply resistors in the power supplying circuit are not broken even when the current continues to flow through the supply resistors because of the earth, and the alarm state is kept until the operation for resume is performed.

46. 发明申请

WO1990007829A1 DIGITAL SIGNAL MULTIPLEXER AND SEPARATOR 审中-公开
标题翻译：数字信号多路复用器和分离器
公开(公告)号：WO1990007829A1
公开(公告)日：1990-07-12
申请号：PCT/JP1990000011
申请日：1990-01-08
申请人： FUJITSU LIMITED , OBANA, Yuji , HIRAMOTO, Masanori , TANAKA, Masayuki
发明人： FUJITSU LIMITED
IPC分类号： H04J03/00
CPC分类号： H04J3/047 , H04J3/0608 , H04J3/1611 , H04J2203/0089
摘要： A digital signal multiplexer of this invention comprises n (an arbitrary integer) multiplexing circuits (11 to 1n) that converts signals input from a plurality of circuits into m (an arbitrary integer) parallel signals having a first transmission speed to which an additional bit is added, a parallel-serial converter circuit (40) which converts m parallel signals sent from n multiplexing circuits into multiplexed signals of the serial form, and buses (30) that connect n multiplexing circuits and the parallel-serial convert circuit together. Each of the n multiplexing circuits has a circuit that successively sends the m parallel signals onto the buses using pulse signals of a second transmission speed which is n times as fast as the first transmission speed. A digital signal separator of the invention comprises a serial-parallel converter circuit (75) for converting the serial input signals into m (an arbitrary integer) parallel signals having a predetermined speed, n (an arbitrary integer) separating circuits (51 to 5n) that separate the additional bit from the m parallel signals of the serial-parallel converter circuit (75) and send the signals onto a plurality of circuits at the above predetermined speed, and buses that connect the serial-parallel converter circuit (75) and the n separating circuits together. Each of the n separating circuits has means for receiving signals from the serial-parallel converter circuit sent onto the buses at a clock timing of the same speed as the predetermined transmission speed.

47. 发明申请

WO1990002454A1 DROP/INSERT CHANNEL SELECTING SYSTEM 审中-公开
标题翻译： DROP / INSERT CHANNEL选择系统
公开(公告)号：WO1990002454A1
公开(公告)日：1990-03-08
申请号：PCT/JP1989000870
申请日：1989-08-25
申请人： FUJITSU LIMITED , MORI, Masakazu , ARAI, Masanori , TAKATSU, Kazuo , FUJIMOTO, Naonobu , YAMAGUCHI, Nobuhide
发明人： FUJITSU LIMITED
IPC分类号： H04J03/08
CPC分类号： H04J3/08
摘要： Disclosed is a drop/insert selecting system in an optical transmission system. To decrease the circuit scale, the system comprises a switching unit (4, 4') having a plurality of input terminals for receiving a plurality of input channels and a plurality of output terminals, each of the input channels conveying a frame synchronization signal and a channel number; at least one drop/insert unit (51, 52, 51', 52') for sequentially generating channel preselection signals until a frame synchronization is established, and for dropping or inserting necessary signals from or into a corresponding one of the necessary channels incorporated into the drop/insert units when a frame synchronization is established; and a channel selecting unit (6, 6a, 6b) for generating a plurality of channel selecting signals in response to each of the channel preselection signals, each of the channel selecting signals functioning to connect each of the output terminals to one of the plurality of input terminals; the remaining output terminals of the switching unit being connected to through-channels to which no drop/insert means is connected.
摘要翻译：公开了一种光传输系统中的放置/插入选择系统。为了减小电路规模，系统包括具有用于接收多个输入通道的多个输入端子和多个输出端子的开关单元（4,4'），每个输入通道传送帧同步信号和频道号码至少一个用于顺序产生信道预选择信号直到帧同步建立的插入/插入单元（51,52,51'，52'），以及用于将必要信号从或并入相应的一个所需信道建立帧同步时的丢弃/插入单元; 以及响应于每个信道预选信号产生多个信道选择信号的信道选择单元（6,6a，6b），每个信道选择信号用于将每个输出端连接到多个输入端子; 开关单元的剩余输出端子连接到没有插入/插入装置的通道。

48. 发明申请

WO1990001902A1 ACOUSTIC COUPLER 审中-公开
标题翻译：声学接头
公开(公告)号：WO1990001902A1
公开(公告)日：1990-03-08
申请号：PCT/JP1989000881
申请日：1989-08-29
申请人： FUJITSU LIMITED , HAYAKAWA, Kenichi , KAWABE, Kenji , WATANABE, Kazuhiro , MATSUI, Kiyoto , SHIMURA, Takaki , TAKEDA, Shiro
发明人： FUJITSU LIMITED
IPC分类号： A61B08/00
CPC分类号： A61B8/4281 , A61B8/4209 , G10K11/02
摘要： An acoustic coupler combined with an ultrasound probe, made of a gel a part of which is hardened for providing holding means for holding the probe for lifting up the probe with the coupler and another part of which is used to an acoustically transparent path between the probe and a surface of an object to be acoustically inspected. Polyvinyl alcohol (PVA) is a typical material for the gel, and the coupler is fabricated by molding a PVA solution by partially increasing concentration of PVA and/or a repeating frequency of refrigerating and thawing the PVA solution, compared with those for the transparent path, in a molding process of the coupler.
摘要翻译：一种与超声波探头结合的声耦合器，其由凝胶制成，其一部分被硬化以提供保持装置，用于保持用于将探针提升的联接器，并且另一部分用于探头之间的声透明路径以及要被声学检查的物体的表面。聚乙烯醇（PVA）是凝胶的典型材料，与透明路径相比，通过部分增加PVA的浓度和/或制冷和解冻PVA溶液的重复频率，通过模制PVA溶液来制造耦合器，在耦合器的模制过程中。

49. 发明申请

WO1989012292A1 ENCODER/DECODER APPARATUS 审中-公开
标题翻译：编码器/解码器装置
公开(公告)号：WO1989012292A1
公开(公告)日：1989-12-14
申请号：PCT/JP1989000580
申请日：1989-06-07
申请人： FUJITSU LIMITED , TANIGUCHI, Tomohiko , ISEDA, Kohei , OKAZAKI, Koji , AMANO, Fumio , UNAGAMI, Shigeyuki , TANAKA, Yoshinori , OHTA, Yasuji
发明人： FUJITSU LIMITED
IPC分类号： G10L09/14
CPC分类号： G10L19/06 , G10L19/04
摘要： A plurality of encoding means performs a local decoding of a speech signal and extracts excitation information and vocal tract information from a speech signal for an encoding. The transmission rate ratios between respective encoded information are different. An evaluation/selection means evaluates the quality of respective decoded signals subjected to a local decoding in the encoding means, determines the most suitable encoding means from among a plurality of encoding means based on a result of the evaluation, and selects the most suitable encoding means, thereby outputting the selection result as selection information. The decoding means decodes a speech signal based on selection information, vocal tract information and excitation information. Evaluation/selection means selects the output from the encoding means in which the quality of a locally decoded signal is the most preferable. When vocal tract information changes little, the vocal tract information is not output, thereby causing the surplus of the quality of information. As much of the surplus of information as possible is assigned to a residual signal. Thus, the quality of a decoded speech signal is improved.
摘要翻译：多个编码装置执行语音信号的本地解码，并从用于编码的语音信号中提取激励信息和声道信息。各个编码信息之间的传输速率比是不同的。评估/选择装置在编码装置中评估经过本地解码的各个解码信号的质量，基于评估结果从多个编码装置中确定最合适的编码装置，并且选择最合适的编码装置从而输出选择结果作为选择信息。解码装置根据选择信息，声道信息和激励信息对语音信号进行解码。评估/选择装置选择编码装置的输出，其中本地解码信号的质量是最优选的。当声道信息变化不大时，声道信息不输出，从而导致信息质量过剩。尽可能多的信息剩余被分配给残留信号。因此，提高了解码语音信号的质量。

50. 发明申请

WO1989009420A1 METHOD OF CONNECTING OPTICAL WAVEGUIDE WITH OPTICAL FIBER 审中-公开
标题翻译：将光波导与光纤连接的方法
公开(公告)号：WO1989009420A1
公开(公告)日：1989-10-05
申请号：PCT/JP1989000299
申请日：1989-03-22
申请人： FUJITSU LIMITED , KOMATSU, Masashi , NODA, Hideki , KUSAKA, Satoshi
发明人： FUJITSU LIMITED
IPC分类号： G02B06/30
CPC分类号： G02B6/30
摘要： In connecting an optical fiber (15) to an optical waveguide (12) formed in a waveguide substrate (11), a first groove (13) is formed in the substrate to expose one end of the optical waveguide (12), and a second groove (14) is formed at right angles with the first groove. The optical fiber is fitted into the second groove in a manner that the end surface of the optical fiber (15) is brought into intimate contact with the end surface of the optical waveguide (12), and the optical fiber is secured in the second groove with an adhesive. Thus, there is provided a method of connecting the optical fiber and the optical waveguide together maintaining excellent temperature characteristics and impact resistance.
摘要翻译：在将光纤（15）连接到形成在波导基板（11）中的光波导（12）的同时，在基板上形成第一凹槽（13）以露出光波导（12）的一端，而第二凹槽槽（14）与第一槽成直角。光纤以使光纤（15）的端面与光波导（12）的端面紧密接触的方式嵌入第二槽中，光纤固定在第二槽用粘合剂。因此，提供了一种将光纤和光波导连接在一起，保持优异的温度特性和抗冲击性的方法。

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