公开(公告)号：US20140230610A1

公开(公告)日：2014-08-21

申请号：US13769841

申请日：2013-02-19

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B23/16 ,  B25B23/00

CPC classification number: B25B23/0007 ,  B25B13/08 ,  B25B13/461 ,  B25B13/481 ,  B25B23/0028 ,  B25B23/0042 ,  B25G1/066

Abstract: A wrench device includes a first handle and a second handle. The first handle has a pivotal connecting segment and a driving head defined at two ends thereof respectively. The pivotal connecting segment has a groove defined around an outer periphery thereof. The second handle has a pivotal connecting recess and a driving part defined at two ends thereof respectively. The pivotal connecting segment of the first handle is pivotally inserted into the pivotal connecting recess of the second handle. The second handle has a side screwed hole opened on a surface therethrough. The side screwed hole communicates with the pivotal connecting recess and corresponds to the groove. A position member is screwed into the side screwed hole. Therefore, when either the driving head or the driving part is broken, the first handle and the second handle can be separated by unscrewing the position member from the side screwed hole.

Abstract translation: 扳手装置包括第一手柄和第二手柄。 第一手柄具有分别在其两端限定的枢转连接段和驱动头。 枢转连接段具有围绕其外周限定的槽。 第二手柄具有枢转连接凹部和分别在其两端限定的驱动部。 第一把手的枢转连接部分枢转地插入到第二把手的枢转连接凹部中。 第二把手具有在穿过其的表面上开口的侧螺纹孔。 侧螺纹孔与枢转连接凹部连通，对应于凹槽。 位置构件拧入侧螺纹孔中。 因此，当驱动头或驱动部分被破坏时，可以通过将位置构件与侧面旋拧孔旋开来分离第一手柄和第二手柄。

公开(公告)号：US08485069B1

公开(公告)日：2013-07-16

申请号：US13535367

申请日：2012-06-28

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

CPC classification number: B25B13/463

Abstract: A wrench with a ratchet device includes a wrench body, a driving set, a cover member and a controlling member. A hole is opened on the wrench body. A receiving space is defined near the hole. An assembling groove is defined near the receiving space. The controlling member is assembled into the receiving space. The driving set has a ratchet and a driving block. The ratchet is assembled into the hole and the driving block is assembled into the receiving space. The driving block abuts against a bottom of the receiving space. The ratchet is engaged with the driving block. The controlling member has a switching member inserted into the assembling groove to move the driving block. Under this arrangement, when the ratchet engages with the driving block, the driving block is stable because the bottom of the receiving space abuts against the driving block.

Abstract translation: 具有棘轮装置的扳手包括扳手主体，驱动组，盖构件和控制构件。 在扳手体上打开一个孔。 在孔附近定义了一个接收空间。 在接收空间附近限定组装槽。 控制构件组装到容纳空间中。 驱动装置具有棘轮和驱动块。 棘轮组装到孔中，驱动块组装到接收空间中。 驱动块抵靠接收空间的底部。 棘轮与驱动块接合。 控制构件具有插入组装槽中的切换构件以移动驱动块。 在这种布置下，当棘轮与驱动块接合时，驱动块是稳定的，因为接收空间的底部与驱动块抵接。

公开(公告)号：US08272298B2

公开(公告)日：2012-09-25

申请号：US12877114

申请日：2010-09-08

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

CPC classification number: B25B15/04 ,  B25B13/463

Abstract: A steering device for a ratchet screwdriver includes a base. The base has a receiving hole defined therein. Two receiving grooves are defined in the base. A moving slot is comparted from receiving hole. A ratchet rod is partially received in the base. The ratchet rod includes a spindle and a ratchet wheel disposed on the spindle. Two blockers are respectively received in the two receiving grooves. Each blocker has unidirectional teeth formed on one end thereof for selectively engaging with the ratchet wheel. A housing is sleeved on the base. The housing has a protrusion disposed on an interior thereof for inserting into the moving slot.

Abstract translation: 用于棘轮螺丝刀的转向装置包括底座。 底座具有限定在其中的接收孔。 两个接收槽限定在底座中。 移动槽由接收孔分开。 棘轮杆部分地接收在基座中。 棘轮杆包括设置在主轴上的主轴和棘轮。 两个阻挡件分别容纳在两个接收槽中。 每个阻挡器在其一端形成有单向齿，用于选择性地与棘轮啮合。 底座上有一个外壳。 壳体具有设置在其内部的用于插入到移动狭槽中的突起。

公开(公告)号：US20120192683A1

公开(公告)日：2012-08-02

申请号：US13015583

申请日：2011-01-28

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46 ,  B25B23/00

CPC classification number: B25B13/463

Abstract: A hand tool with a bushing includes a receiving space defined in a driving head thereof, a ratchet assembly movably received in the receiving space for adapting to driving a work piece, and a bushing disposed between the ratchet assembly and an inner periphery of the receiving space. The ratchet assembly has an outer configuration substantially corresponding in geometry to the receiving space. When the ratchet assembly is operated, the bushing is able to sustain a wear of the ratchet assembly.

Abstract translation: 具有衬套的手工工具包括限定在其驱动头中的容纳空间，可移动地容纳在容纳空间中用于适应驱动工件的棘轮组件，以及设置在棘轮组件和接收空间的内周之间的衬套 。 棘轮组件具有基本对应于接收空间的几何形状的外部构造。 当棘轮组件被操作时，衬套能够承受棘轮组件的磨损。

公开(公告)号：US20120055290A1

公开(公告)日：2012-03-08

申请号：US12877114

申请日：2010-09-08

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B15/04

CPC classification number: B25B15/04 ,  B25B13/463

Abstract: A steering device for a ratchet screwdriver includes a base. The base has a receiving hole defined therein. Two receiving grooves are defined in the base. A moving slot is comparted from receiving hole. A ratchet rod is partially received in the base. The ratchet rod includes a spindle and a ratchet wheel disposed on the spindle. Two blockers are respectively received in the two receiving grooves. Each blocker has unidirectional teeth formed on one end thereof for selectively engaging with the ratchet wheel. A housing is sleeved on the base. The housing has a protrusion disposed on an interior thereof for inserting into the moving slot.

公开(公告)号：US07808419B2

公开(公告)日：2010-10-05

申请号：US12255960

申请日：2008-10-22

Applicant: Yi-Fu Chen ,  Ming-Luen Liou ,  Cheng-I Wei ,  Chun Hua Ho

Inventor： Yi-Fu Chen ,  Ming-Luen Liou ,  Cheng-I Wei ,  Chun Hua Ho

IPC: H03M1/50

CPC classification number: H03M1/1255 ,  H03J1/0008

Abstract: A digitizer includes an analog to digital converter (ADC), a sampling frequency generator, and a controller. The ADC samples an IF signal to generate a digital signal. The sampling frequency generator is connected to the ADC and provides a sampling clock of variable frequency to the ADC. The controller is connected to the sampling frequency generator and determines frequency of the sampling clock.

Abstract translation: 数字转换器包括模数转换器（ADC），采样频率发生器和控制器。 ADC对IF信号进行采样以产生数字信号。 采样频率发生器连接到ADC，并向ADC提供可变频率的采样时钟。 控制器连接到采样频率发生器并确定采样时钟的频率。

公开(公告)号：US07554469B2

公开(公告)日：2009-06-30

申请号：US12123522

申请日：2008-05-20

Applicant: Yu-Hsuan Tu ,  Yi-Fu Chen ,  Kang-Wei Hsueh

Inventor： Yu-Hsuan Tu ,  Yi-Fu Chen ,  Kang-Wei Hsueh

IPC: H03M1/06

CPC classification number: H03M1/1033 ,  H03M1/164

Abstract: The invention provides a method for gain error estimation in an analog-to-digital converter. In one embodiment, the analog-to-digital converter comprises a plurality of stages. A series of correction numbers applied to a target stage selected from the stages are correlated with a series of calculation values calculated according to digital output values of the stages to generate a series of gain error estimates. The series of gain error estimates are multiplied by a series of updating parameters to obtain a series of first values. A series of previous gain error values are multiplied by one minus the corresponding updating parameters to obtain a series of second values, wherein the series of previous gain values are obtained by delaying the present gain error values. The series of first values and the series of second values are correspondingly added to obtain a series of present gain error values for gain error correction.

Abstract translation: 本发明提供了一种用于模数转换器中增益误差估计的方法。 在一个实施例中，模数转换器包括多个级。 应用于从这些级选择的目标级的一系列校正数字与根据级的数字输出值计算的一系列计算值相关联，以产生一系列增益误差估计。 一系列增益误差估计乘以一系列更新参数，以获得一系列第一个值。 一系列先前的增益误差值乘以1减去对应的更新参数以获得一系列第二值，其中通过延迟当前的增益误差值来获得先前增益值的一系列。 相应地增加一系列第一值和一系列第二值以获得一系列用于增益误差校正的当前增益误差值。

公开(公告)号：US20090044244A1

公开(公告)日：2009-02-12

申请号：US12120071

申请日：2008-05-13

Applicant: Chiao-Chih CHANG ,  Yi-Fu Chen ,  Ming-Luen Liou

Inventor： Chiao-Chih CHANG ,  Yi-Fu Chen ,  Ming-Luen Liou

IPC: H04N7/173

CPC classification number: H04N5/4401 ,  H04N5/455 ,  H04N5/46 ,  H04N5/50 ,  H04N21/42638 ,  H04N21/4345 ,  H04N21/4382

Abstract: Apparatuses and methods for scanning channels in a television signal receiver. The apparatuses generally include a first acquisition circuit, a second acquisition circuit, and a controller. The first acquisition circuit is generally configured to determine, during a first time period, whether a selected radio frequency channel has a first format and to produce a first acquisition indicator in response thereto. The second acquisition circuit is generally configured to determine, during a second time period overlapping the first time period, whether the selected radio frequency channel has a second format and to produce a second acquisition indicator in response thereto. The controller is generally configured to scan a plurality of radio frequency channels by operating the first acquisition circuit and the second acquisition circuit for each one of the plurality of radio frequency channels. Embodiments advantageously provides for faster scanning and acquisition of television signals in a mixed-format (e.g., analog and digital) television distribution environment.

Abstract translation: 用于在电视信号接收机中扫描频道的装置和方法。 装置通常包括第一采集电路，第二采集电路和控制器。 第一采集电路通常被配置为在第一时间周期期间确定所选择的射频信道是否具有第一格式，并且响应于此产生第一采集指示符。 第二采集电路通常被配置为在与第一时间段重叠的第二时间段期间确定所选择的射频信道是否具有第二格式，并且响应于此产生第二采集指示符。 控制器通常被配置为通过为多个射频信道中的每个射频信道的每一个操作第一采集电路和第二采集电路来扫描多个射频信道。 实施例有利地提供了以混合格式（例如，模拟和数字）电视分发环境中更快速地扫描和获取电视信号。

公开(公告)号：US20240246203A1

公开(公告)日：2024-07-25

申请号：US18628836

申请日：2024-04-08

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B23/00 ,  B25B13/46

CPC classification number: B25B23/0014 ,  B25B13/46 ,  B25B23/0028

Abstract: A wrench includes a function end having an extension portion extending therefrom. Two arms extend from the function end and toward a direction opposite to the extension portion. A space is formed between the two arms and the extension portion. An engaging portion is formed to the distal end of the extension portion for receiving a hand tool. A rotary head is pivotably located in the space of the function end by two bolts respectively extending through the two arms and connected to the rotary head. The rotary head includes an outer part and a control unit which is located in a through hole defined through the outer ring. The control unit includes a control part and a driving part respectively located on two opposite end of the rotary head. The control part is rotated to control the direction that the driving part rotates.

公开(公告)号：US11484994B2

公开(公告)日：2022-11-01

申请号：US16689079

申请日：2019-11-20

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

Abstract: A wrench includes a driving unit located in the head of the wrench. A rod extends through the driving member and includes a stepped recess so as to control a bead in the radial hole of the driving member to secure a socket connected to the driving member. A rotary member is connected to the head and includes a room. A locking member is located in the room and locked to the driving member. A fixing area is formed between the locking member and the driving member so as to fix the locking member and the driving member together. The fixing area ensures that locking member is not separated from the driving member.