专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08000200B2 HFM enable control system 有权
标题翻译： HFM启用控制系统
公开(公告)号：US08000200B2
公开(公告)日：2011-08-16
申请号：US12639753
申请日：2009-12-16
申请人： Akihiko Doi , Shengyuan Li , Lundy Findlay Taylor
发明人： Akihiko Doi , Shengyuan Li , Lundy Findlay Taylor
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/0062 , H03K3/2885 , H03K19/086 , Y10T307/76
摘要： A modulation control system for use with a high frequency modulator is described. This system comprises a latch for selectively receiving enable signals, wherein the latch transmits a latched signal in response to receiving at least two of the enable signals; a selection device coupled to the latch for receiving the latched signal, a voltage source, and a terminal for receiving at least one of the enable signals, wherein the selection device transmits a selected signal; and a logic device coupled to the selection device and a terminal for receiving a modulated enable signal, wherein the logic device transmits a synchronized signal for either enabling or disabling the high frequency modulator in response to receiving the selected signal associated with at least one of the enable signals.
摘要翻译：描述了一种与高频调制器一起使用的调制控制系统。该系统包括用于选择性地接收使能信号的锁存器，其中响应于接收至少两个使能信号，锁存器发送锁存信号; 耦合到所述锁存器的用于接收所述锁存信号的选择装置，电压源和用于接收所述使能信号中的至少一个的终端，其中所述选择装置发送所选择的信号; 以及耦合到所述选择装置和用于接收调制的使能信号的终端的逻辑装置，其中所述逻辑装置响应于接收到与所述第一和第二装置中的至少一个相关联的所选择的信号而发送用于启用或禁用所述高频调制器的同步信号启用信号。

2. 发明申请

US20100315926A1 HFM ENABLE CONTROL SYSTEM 有权
标题翻译： HFM启用控制系统
公开(公告)号：US20100315926A1
公开(公告)日：2010-12-16
申请号：US12639753
申请日：2009-12-16
申请人： Akihiko Doi , Shengyuan Li , Lundy Findlay Taylor
发明人： Akihiko Doi , Shengyuan Li , Lundy Findlay Taylor
IPC分类号： G11B7/00 , H03K17/00
CPC分类号： G11B7/1263 , G11B7/0062 , H03K3/2885 , H03K19/086 , Y10T307/76
摘要： A modulation control system for use with a high frequency modulator is described. This system comprises a latch for selectively receiving enable signals, wherein the latch transmits a latched signal in response to receiving at least two of the enable signals; a selection device coupled to the latch for receiving the latched signal, a voltage source, and a terminal for receiving at least one of the enable signals, wherein the selection device transmits a selected signal; and a logic device coupled to the selection device and a terminal for receiving a modulated enable signal, wherein the logic device transmits a synchronized signal for either enabling or disabling the high frequency modulator in response to receiving the selected signal associated with at least one of the enable signals.
摘要翻译：描述了一种与高频调制器一起使用的调制控制系统。该系统包括用于选择性地接收使能信号的锁存器，其中响应于接收至少两个使能信号，锁存器发送锁存信号; 耦合到所述锁存器的用于接收所述锁存信号的选择装置，电压源和用于接收所述使能信号中的至少一个的终端，其中所述选择装置发送所选择的信号; 以及耦合到所述选择装置和用于接收调制的使能信号的终端的逻辑装置，其中所述逻辑装置响应于接收到与所述至少一个的相关联的所选择的信号而发送用于启用或禁用所述高频调制器的同步信号启用信号。

3. 发明申请

US20100315919A1 CURRENT GAIN CONTROL SYSTEM 有权
标题翻译：电流增益控制系统
公开(公告)号：US20100315919A1
公开(公告)日：2010-12-16
申请号：US12622586
申请日：2009-11-20
申请人： Akihiko Doi , Shengyuan Li
发明人： Akihiko Doi , Shengyuan Li
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B20/10027 , G11B2020/10592 , G11B2220/2545 , G11B2220/2562
摘要： A current gain control system is described and comprises first and second gain blocks respectively associated with the first and second input channels, wherein first and second gain blocks transmit first and second gain signals in response to receiving first and second input signals; first and second converters adapted to be respectively coupled to the first and second gain blocks, the first and second converters operative for setting gains associated with the first and second input channel and for transmitting first and second converted signals in response to receiving the first and second gain signals; and first and second switches for selectively coupling the first and second converters to first and second channel drivers, respectively, wherein the first and second channel drivers transmit channel gain signals in response to receiving the first converted signal, and the channel gain signal allows control of the gain associated with the input channel.
摘要翻译：描述当前增益控制系统，并且包括分别与第一和第二输入通道相关联的第一和第二增益块，其中响应于接收第一和第二输入信号，第一和第二增益块传输第一和第二增益信号; 第一和第二转换器适于分别耦合到第一和第二增益块，第一和第二转换器用于设置与第一和第二输入通道相关联的增益，并且用于响应于接收第一和第二增益块而发送第一和第二转换信号增益信号; 以及分别用于将第一和第二转换器分别选择性地耦合到第一和第二通道驱动器的第一和第二开关，其中第一和第二通道驱动器响应于接收到第一转换信号而传输通道增益信号，并且通道增益信号允许控制与输入通道相关的增益。

4. 发明授权

US08437232B2 High frequency modulator 有权
标题翻译：高频调制器
公开(公告)号：US08437232B2
公开(公告)日：2013-05-07
申请号：US12633072
申请日：2009-12-08
申请人： Akihiko Doi , Shengyuan Li , Indumini Ranmuthu
发明人： Akihiko Doi , Shengyuan Li , Indumini Ranmuthu
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , G11B2007/0006
摘要： A high frequency modulator is described. It comprises: a first converter for receiving a constant current signal and transmitting a first converted signal; an adder coupled the first converter and operative for transmitting a summed signal in response to receiving the first converted signal and selectively receiving a triangular signal; a first oscillator coupled to the adder for receiving the summed signal, the first oscillator operative for transmitting a time varying current signal; a second converter coupled to the first oscillator for receiving the time varying current signal and operative for transmitting a second converted signal; and an output device selectively coupled to the second converter and operative for transmitting an output signal in response to receiving either the second converted signal or an offset signal.
摘要翻译：描述了高频调制器。它包括：第一转换器，用于接收恒定电流信号并发送第一转换信号; 耦合第一转换器的加法器，用于响应于接收到第一转换信号并选择性地接收三角形信号而发送加法信号; 第一振荡器，耦合到所述加法器，用于接收所述相加的信号，所述第一振荡器用于发送时变电流信号; 耦合到所述第一振荡器的第二转换器，用于接收所述时变电流信号并且用于发送第二转换信号; 以及选择性地耦合到第二转换器并且响应于接收到第二转换信号或偏移信号而发送输出信号的输出装置。

5. 发明授权

US08134897B2 Current gain control system 有权
标题翻译：电流增益控制系统
公开(公告)号：US08134897B2
公开(公告)日：2012-03-13
申请号：US12622586
申请日：2009-11-20
申请人： Akihiko Doi , Shengyuan Li
发明人： Akihiko Doi , Shengyuan Li
IPC分类号： G11B7/00
CPC分类号： G11B20/10009 , G11B20/10027 , G11B2020/10592 , G11B2220/2545 , G11B2220/2562
摘要： A current gain control system is described and comprises first and second gain blocks respectively associated with the first and second input channels, wherein first and second gain blocks transmit first and second gain signals in response to receiving first and second input signals; first and second converters adapted to be respectively coupled to the first and second gain blocks, the first and second converters operative for setting gains associated with the first and second input channel and for transmitting first and second converted signals in response to receiving the first and second gain signals; and first and second switches for selectively coupling the first and second converters to first and second channel drivers, respectively, wherein the first and second channel drivers transmit channel gain signals in response to receiving the first converted signal, and the channel gain signal allows control of the gain associated with the input channel.
摘要翻译：描述当前增益控制系统，并且包括分别与第一和第二输入通道相关联的第一和第二增益块，其中响应于接收第一和第二输入信号，第一和第二增益块传输第一和第二增益信号; 第一和第二转换器适于分别耦合到第一和第二增益块，第一和第二转换器用于设置与第一和第二输入通道相关联的增益，并且用于响应于接收第一和第二增益块而发送第一和第二转换信号增益信号; 以及分别用于将第一和第二转换器分别选择性地耦合到第一和第二通道驱动器的第一和第二开关，其中第一和第二通道驱动器响应于接收到第一转换信号而传输通道增益信号，并且通道增益信号允许控制与输入通道相关的增益。

6. 发明授权

US08009546B2 Over current protection device 有权
标题翻译：过电流保护装置
公开(公告)号：US08009546B2
公开(公告)日：2011-08-30
申请号：US12613419
申请日：2009-11-05
申请人： Shengyuan Li , Akihiko Doi
发明人： Shengyuan Li , Akihiko Doi
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , H01S5/042 , H01S5/06825
摘要： An over current protection device is described. It includes a plurality of input channels for receiving an input signal; a plurality of low pass filters coupled to a first group of the plurality of input channels, wherein each low pass filter is associated with one input channel within the first group of input channels, the plurality of low pass filters operative for removing spikes in associated with the input signal; and a plurality of digital to analog converters coupled to a second group of the plurality of input channels, wherein each digital to analog converter is associated with one low pass filter in the second group of input channels, the digital to analog converters operative for triggering over current protection when a signal received from the associated low pass filter is beyond a preset level, wherein the over current protection device is on chip with the laser diode driver.
摘要翻译：描述过电流保护装置。它包括用于接收输入信号的多个输入通道; 耦合到所述多个输入通道中的第一组的多个低通滤波器，其中每个低通滤波器与所述第一组输入通道内的一个输入通道相关联，所述多个低通滤波器用于去除相关联的尖峰输入信号; 以及耦合到所述多个输入通道的第二组的多个数模转换器，其中每个数模转换器与所述第二组输入通道中的一个低通滤波器相关联，所述数模转换器用于触发当从相关联的低通滤波器接收到的信号超过预设电平时，电流保护，其中过电流保护装置与激光二极管驱动器在芯片上。

7. 发明申请

US20100315937A1 HIGH FREQUENCY MODULATOR 有权
标题翻译：高频调制器
公开(公告)号：US20100315937A1
公开(公告)日：2010-12-16
申请号：US12633072
申请日：2009-12-08
申请人： Akihiko Doi , Shengyuan Li , Indumini Ranmuthu
发明人： Akihiko Doi , Shengyuan Li , Indumini Ranmuthu
IPC分类号： G11B7/00 , H03C3/09 , G02F1/00
CPC分类号： G11B7/126 , G11B2007/0006
摘要： A high frequency modulator is described. It comprises: a first converter for receiving a constant current signal and transmitting a first converted signal; an adder coupled the first converter and operative for transmitting a summed signal in response to receiving the first converted signal and selectively receiving a triangular signal; a first oscillator coupled to the adder for receiving the summed signal, the first oscillator operative for transmitting a time varying current signal; a second converter coupled to the first oscillator for receiving the time varying current signal and operative for transmitting a second converted signal; and an output device selectively coupled to the second converter and operative for transmitting an output signal in response to receiving either the second converted signal or an offset signal.
摘要翻译：描述了高频调制器。它包括：第一转换器，用于接收恒定电流信号并发送第一转换信号; 耦合第一转换器的加法器，用于响应于接收到第一转换信号并选择性地接收三角形信号而发送加法信号; 第一振荡器，耦合到所述加法器，用于接收所述相加的信号，所述第一振荡器用于发送时变电流信号; 耦合到所述第一振荡器的第二转换器，用于接收所述时变电流信号并且用于发送第二转换信号; 以及选择性地耦合到第二转换器并且响应于接收到第二转换信号或偏移信号而发送输出信号的输出装置。

8. 发明申请

US20100315924A1 Over Current Protection Device 有权
标题翻译：过电流保护装置
公开(公告)号：US20100315924A1
公开(公告)日：2010-12-16
申请号：US12613419
申请日：2009-11-05
申请人： Shengyuan Li , Akihiko Doi
发明人： Shengyuan Li , Akihiko Doi
IPC分类号： G11B7/00 , H02H3/08 , H01S3/00
CPC分类号： G11B7/1263 , H01S5/042 , H01S5/06825
摘要： An over current protection device is described. It includes a plurality of input channels for receiving an input signal; a plurality of low pass filters coupled to a first group of the plurality of input channels, wherein each low pass filter is associated with one input channel within the first group of input channels, the plurality of low pass filters operative for removing spikes in associated with the input signal; and a plurality of digital to analog converters coupled to a second group of the plurality of input channels, wherein each digital to analog converter is associated with one low pass filter in the second group of input channels, the digital to analog converters operative for triggering over current protection when a signal received from the associated low pass filter is beyond a preset level, wherein the over current protection device is on chip with the laser diode driver.
摘要翻译：描述过电流保护装置。它包括用于接收输入信号的多个输入通道; 耦合到所述多个输入通道中的第一组的多个低通滤波器，其中每个低通滤波器与所述第一组输入通道内的一个输入通道相关联，所述多个低通滤波器用于去除相关联的尖峰输入信号; 以及耦合到所述多个输入通道的第二组的多个数模转换器，其中每个数模转换器与所述第二组输入通道中的一个低通滤波器相关联，所述数模转换器用于触发当从相关联的低通滤波器接收到的信号超过预设电平时，电流保护，其中过电流保护装置与激光二极管驱动器在芯片上。

9. 发明授权

US07911911B2 Optical disk device and control method 有权
标题翻译：光盘装置及控制方法
公开(公告)号：US07911911B2
公开(公告)日：2011-03-22
申请号：US12415696
申请日：2009-03-31
申请人： Akihiko Doi
发明人： Akihiko Doi
IPC分类号： G11B7/00
CPC分类号： G11B19/041 , G11B7/126 , G11B19/06 , G11B20/10009 , G11B20/10027 , G11B20/10222 , G11B2007/0006 , G11B2220/2537
摘要： According to one embodiment, an optical disk device includes a laser light source that emits laser light to be applied to an optical disk, an automatic power control circuit that controls a laser output of the laser light source, and a control processor that performs a setting data transmission process for the automatic power control circuit. The automatic power control circuit includes an operation setting module that makes an operation setting according to setting data obtained in the setting data transmission process of the control processor and a condition determining module that determines whether an operation setting permission condition containing the number of clocks during a transmission period of the setting data is adequate, and inhibits the operation setting of the operation setting module when the operation setting permission condition is not adequate.
摘要翻译：根据一个实施例，光盘装置包括发射要施加到光盘的激光的激光源，控制激光源的激光输出的自动功率控制电路和执行设定的控制处理器数据传输过程为自动电源控制电路。自动电力控制电路包括：操作设定模块，其根据在控制处理器的设定数据发送处理中获得的设定数据进行动作设定;以及条件判定模块，判断是否包含在设定数据的传送期间是足够的，并且当操作设定许可条件不足时，禁止操作设定模块的动作设定。

10. 发明授权

US5309425A Signal processing circuit for optical disk apparatus 失效
标题翻译：光盘装置信号处理电路
公开(公告)号：US5309425A
公开(公告)日：1994-05-03
申请号：US907126
申请日：1992-07-01
申请人： Mikio Yamamuro , Akihiko Doi
发明人： Mikio Yamamuro , Akihiko Doi
IPC分类号： G11B7/00 , G11B7/005 , G11B11/105 , G11B20/10 , G06F15/00
CPC分类号： G11B20/10009 , G11B11/10515 , G11B11/10597 , G11B7/005
摘要： A signal processing circuit for a disk apparatus with an optical head, which causes photodiodes to detect light acquired by irradiating light from a laser diode on a disk that has an address portion and data portion recorded thereon, and performs photoelectric conversion of the light. A level converter alters the level of the signal detected by each photodiode and provides an output signal. A detector detects a level of the output signal by switching time constants between the address portion and data portion. Using a bias corresponding to the detected level, the levels of signals detected by the photodiodes are changed.
摘要翻译：一种用于具有光学头的光盘装置的信号处理电路，其使得光电二极管检测通过在具有地址部分和数据部分的光盘上照射来自激光二极管的光而获得的光，并执行光的光电转换。电平转换器改变由每个光电二极管检测到的信号的电平，并提供输出信号。检测器通过切换地址部分和数据部分之间的时间常数来检测输出信号的电平。使用对应于检测电平的偏置，改变由光电二极管检测的信号电平。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式