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1. 发明专利

JP2004007036A TWO-OUTPUT TYPE CRYSTAL OSCILLATOR 审中-公开
公开(公告)号：JP2004007036A
公开(公告)日：2004-01-08
申请号：JP2002157212
申请日：2002-05-30
申请人： TOYO COMMUNICATION EQUIP
发明人： ISHIKAWA MASAYUKI , KUDO AKIRA , OINUMA YUICHI
IPC分类号： H03B5/32 , H03B5/02
摘要： PROBLEM TO BE SOLVED: To provide a two-output type TCXO having an excellent frequency characteristic and starting characteristic capable of electric-power saving, by solving a problem of power consumption of a buffer circuit of TCXO, providing the TCXO with a CMOS inverter buffer circuit, and optimizing the frequency characteristic and the starting characteristic of the buffer circuit in the two-output type TCXO. SOLUTION: In the two-output type crystal oscillator having a CMOS inverter for converting an analog signal to a digital signal, a first resistor connected in series with an input of the CMOS inverter is set to 100Ω-1KΩ, a second resistor connected across the input and the output of the CMOS inverter is set to 500KΩ-1MΩ, and the capacity of a capacitor connected in series with the first resistor is set to 100pF-1000pF. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2003196262A METHOD FOR ANALYZING FINITE ELEMENT METHOD MODEL 审中-公开
公开(公告)号：JP2003196262A
公开(公告)日：2003-07-11
申请号：JP2001391989
申请日：2001-12-25
申请人： TOYO COMMUNICATION EQUIP
发明人： AOYAMA YUJI
IPC分类号： G06F17/50 , G06F17/12 , G06F17/16
摘要： PROBLEM TO BE SOLVED: To provide a method for analyzing a finite element method model even when the model is symmetrical with respect to an axis, and the displacement of the vibration mode has symmetrical or asymmetrical displacement distribution with respect to the symmetrical axis, and the number of elements in a direction setting a boundary condition is odd. SOLUTION: A model to be analyzed is divided into two according to the symmetry (a step 1). Then, node numbers are applied, and symmetrical node number conversion and boundary condition setting is performed (a step 2). Furthermore, an element matrix is generated, and converted if necessary (a step 3). Finally, each element matrix is added so that a system matrix can be generated (a step 4). After the system matrix is generated, a solution is calculated by using a usual finite element method calculation program. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003158441A QUARTZ OSCILLATOR USING QUARTZ RESONATOR 审中-公开
公开(公告)号：JP2003158441A
公开(公告)日：2003-05-30
申请号：JP2001355414
申请日：2001-11-21
申请人： TOYO COMMUNICATION EQUIP
发明人： NAGANO YOJI
IPC分类号： H01L25/16 , H03B5/32 , H03H9/02 , H03H9/19
摘要： PROBLEM TO BE SOLVED: To provide a quartz resonator which does not need the attention to directivity when mounted and does not cause a coupling phenomenon between an output electrode pad of the quartz resonator and a signal output electrode pad of a quartz oscillator, and a quartz oscillator using the quartz resonator. SOLUTION: An X1 electrode pad 34 and an X2 electrode pad 35, dummy electrode pads 36 and ground electrode pads 37 conductive to a quartz resonator element as an output electrode pad are provided on the external bottom face of the quartz oscillator 32. Meanwhile, an input electrode pad, which corresponds to the output electrode pad of the quartz oscillator 32, comprising an X1 electrode pad 38, an X2 electrode pad 39 and ground electrode pads 40 is provided on the top face of a ceramic package 33. An input-output electrode pad comprising a signal output electrode pad 41, a control voltage electrode pad 42, a ground electrode pad 43 and a direct current applied electrode pad 44 is provided on the external bottom face of the ceramic package 33.

4. 发明专利

JP2003142895A BACKUP UNIT FOR PRINTED BOARD 审中-公开
公开(公告)号：JP2003142895A
公开(公告)日：2003-05-16
申请号：JP2001335604
申请日：2001-10-31
申请人： TOYO COMMUNICATION EQUIP
发明人： KONDO HIROYUKI , HARADA SHIGEO
IPC分类号： H05K13/04
摘要： PROBLEM TO BE SOLVED: To provide a backup unit in which backup pins do not damage a mounting component without necessity of a complicate work such as selectively standing the pins on a base plate to meet the component disposition on the lower surface of the board. SOLUTION: The backup unit for the printed board comprises a plurality of backup members 15 supported in a predetermined array on one side surface of the base plate 12. The member 15 has a cylindrical part 16 fixed to the one side surface of the base plate, a pin 17 supported retractably in a direction perpendicular to the surface of the plate base by the cylindrical part, and sensors 20, 21 for sensing the protruding or retracting state of the pin. The backup unit further comprises a dive means 18 for supplying a pneumatic pressure to the cylindrical part to protrude or retract the pins, and a controller 22 for deciding the protruding or retracting state of the pin based on the detection signal from the sensors to store it.

5. 发明专利

JP2003133996A PECTINATE SPECTRUM COMMUNICATION METHOD 审中-公开
公开(公告)号：JP2003133996A
公开(公告)日：2003-05-09
申请号：JP2001330521
申请日：2001-10-29
申请人： TOYO COMMUNICATION EQUIP
发明人： TAKAHASHI MASAKAZU
IPC分类号： H04B1/707 , H04J13/10
摘要： PROBLEM TO BE SOLVED: To provide a pectinate spectrum communication method that eliminates a need of restoring orthogonal carrier waves from a receive signal, and prevents demodulation information signal errors due to a frequency-phase deviance in the orthogonal carrier wave between a transmitter and a receiver. SOLUTION: A repetitive sequence with an N-time repetition of a spread spectrum sequence is generated, and forward and backward sequences of this repetitive sequence are positioned as guard-chips at the front and back of a repetitive sequence respectively to generate an extension sequence. In addition, N orthogonal carrier waves with a frequency deviation of the reciprocal of one cycle time width of the repetitive sequence are generated, and the extension sequence is multiplied by the orthogonal carrier waves to generate a modulation extension sequence. Also, guard-chip sections are removed from the modulation extension sequence to generate a modulation repetitive sequence. The modulation extension sequence is used as the diffusion sequence, and the modulation repetitive sequence is used as an inverse spread sequence.

6. 发明专利

JP2003115741A PIEZOELECTRIC RESONATOR AND OVERTONE FREQUENCY ADJUSTING METHOD 审中-公开
公开(公告)号：JP2003115741A
公开(公告)日：2003-04-18
申请号：JP2001308230
申请日：2001-10-04
申请人： TOYO COMMUNICATION EQUIP
发明人： SUGIMOTO YUSUKE
IPC分类号： H03H9/02 , H03H3/04 , H03H9/19
摘要： PROBLEM TO BE SOLVED: To provide a piezoelectric resonator in which only a resonant fre quency concerning a third-order overtone can be adjusted without influencing a fundamental wave resonant frequency. SOLUTION: In the piezoelectric resonator on which a partial electrode and a lead electrode each having a prescribed dimension are respectively provided on two principal surfaces of a piezoelectric substrate, a deposited film of a prescribed shape whose length in at least either an x-direction or a z-direction is shorter than the length of the partial electrode is stack on the approximate center position of the partial electrode, thereby enabling to adjust only the resonant frequency concerning the third-order overtone without influencing the fundamental wave resonant frequency.

7. 发明专利

JP2003092607A INVERSE TANGENT ARITHMETIC CIRCUIT IN DIGITAL SIGNAL PROCESSING 审中-公开
公开(公告)号：JP2003092607A
公开(公告)日：2003-03-28
申请号：JP2001265786
申请日：2001-09-03
申请人： TOYO COMMUNICATION EQUIP
发明人： HAGA HIROYUKI , KATSUTA HIROTATSU
IPC分类号： H03D3/00 , H04L27/22
摘要： PROBLEM TO BE SOLVED: To provide an inverse tangent arithmetic circuit capable of reducing the arithmetic processing amount and decreasing the capacity of the ROM table. SOLUTION: A phase range reduction part 31 obtains the magnitudes |X|, |Y| of input signals X, Y, shifts bits of the magnitudes |X|, |Y| which is grater so as to obtain a maximum value within an input dynamic range of an inverse tangent function ROM 32 and shifts bits of the magnitudes |X|, |Y| which is smaller by the same amount of bit shift as that of the greater magnitude so as to normalize the result. Thus, the arithmetic amount of the phase range reduction part 31 is reduced and the capacity of an arithmetic table of the inverse tangent function ROM 32 is decreased.

8. 发明专利

JP2002365411A PRISM 失效
公开(公告)号：JP2002365411A
公开(公告)日：2002-12-18
申请号：JP2001168021
申请日：2001-06-04
申请人： TOYO COMMUNICATION EQUIP
发明人： OKAMURA MITSURU , KURITA TOSHIYUKI
IPC分类号： G02B5/04 , G02B1/11 , G02B5/30 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To solve the problem of a conventional prism that additional processing such as chamfering and sand blasting is required only for marking to discriminate the direction and increases the manufacturing cost and to provide a prism having markings to discriminate directions without requiring additional processing such as chamfering. SOLUTION: The prism has a first triangle prism having a polarizing film face formed on one face and antireflection film faces formed on other two faces and a second triangle prism having an adhesive layer face on one face by applying an adhesive and antireflection film faces formed on other two faces. The prism is produced by joining the above polarizing film face and the adhesive layer face. In the four antireflection film faces of the two triangle prisms, the reflectance characteristics of at least one antireflection film face are made different from the reflectance characteristics of other three antireflection film faces.

9. 发明专利

JP2002344278A PIEZOELECTRIC RESONATOR 失效
公开(公告)号：JP2002344278A
公开(公告)日：2002-11-29
申请号：JP2001148333
申请日：2001-05-17
申请人： TOYO COMMUNICATION EQUIP
发明人： IWATA KOICHI
IPC分类号： H01L21/60 , H03H9/02 , H03H9/10 , H03H9/13 , H03H9/19
摘要： PROBLEM TO BE SOLVED: To solve the problem of peel off between a crystal substrate and an Ni film, formed thereon and on an interface between the Ag film and Ni film, when a pad electrode formed by sequentially depositing the Ni film, Ag film, Ni film and Ag film on the surface of a crystal resonator and an outside connection electrode formed at the inner bottom face of the package of the oscillation element are jointed via an Au bump. SOLUTION: A Cr film and an Au film are deposited on the crystal substrate and a sputtered film of Ag is further formed thereon, to form a pad electrode.

10. 发明专利

JP2002319834A MANUFACTURING METHOD FOR MULTI-FREQUENCY SURFACE ACOUSTIC WAVE FILTER 失效
公开(公告)号：JP2002319834A
公开(公告)日：2002-10-31
申请号：JP2001125165
申请日：2001-04-24
申请人： TOYO COMMUNICATION EQUIP
发明人： SAKURAI MAKOTO
IPC分类号： H03H3/08
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method for a multi-frequency surface acoustic wave filter that can widely be compatible with a frequency band and specifications of a SAW filter independently of the property of a piezoelectric substrate and that can manufacture a high quality interdigital transducers(IDT) with excellent power capacity. SOLUTION: The tasks above can be solved by the manufacturing method for multi-frequency surface acoustic wave filters for manufacturing at least two surface acoustic wave filters with different electrode film thickness on a single piezoelectric substrate and characterized in that the method includes a step of preparing the piezoelectric substrate on the major side of which the conductive film with the maximum film thickness required for the two or more surface acoustic wave filters are formed, a step of adjusting the film thickness of a required part of the conductive film so as to attain a required film thickness for the two or more surface acoustic wave filters by means of etching, and a step of applying photo lithography to the conductive film with different film thickness so as to integrally form interdigital transducers for each surface acoustic wave filter.

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