公开(公告)号：EP1381955B1

公开(公告)日：2007-08-29

申请号：EP01990754.2

申请日：2001-11-29

申请人： O2 Micro International Limited ,  Du, Sterling ,  Chan, Reginia ,  Densham, William L. ,  Her, Sheau Chuen

发明人： DU, Sterling ,  CHAN, Reginia ,  DENSHAM, William, L. ,  HER, Sheau, Chuen ,  LAM, James ,  IVCHENKO, Volodymyr

IPC分类号： G06F13/38 ,  G06F9/445 ,  G06F1/32

CPC分类号： G06F1/32 ,  G06F3/165 ,  G06F9/4406 ,  G06F9/441 ,  G11B27/105 ,  G11B2220/61

摘要： A low-power digital audio decoding and playing system and method for computing devices provides a low-cost, low power-consumption, long-battery-life audio playing and decoding system, which may be used to play compressed audio files of various formats. In one aspect, a computer system adapted to play audio files comprises a system CPU (6), memory (4), at least one drive comprising compressed audio data (2), and an audio controller coupled to the system CPU (6), memory (4) and drive (2). The audio controller is adapted to cause the drive (2) to read the compressed audio data from the drive (2), to cause the system CPU (6) to decompress the compressed audio data from the drive (2) into decompressed audio data, to cause the decompressed audio to be stored in the memory (4), and to cause the decompressed audio data to be retrieved from the memory (4) for playing.

公开(公告)号：EP1001331A2

公开(公告)日：2000-05-17

申请号：EP99308752.7

申请日：1999-11-03

申请人： O2 Micro International Limited

发明人： Huang, Jung-Chih ,  Oh, Brian ,  Huang, Yishao Max ,  Du, Sterling ,  Reynoso, Aaron

IPC分类号： G06F1/00

CPC分类号： G06F21/81 ,  G06F2211/1097

摘要： A pre-boot security controller in an electronic device is energized even though a power subsystem does not energize operation of a digital computer in the device. The security controller stores supervisor and user passwords in a nonvolatile password memory for comparison with a password entered using a security keypad. Upon entry of a matching password, the security controller enables the power subsystem to energize operation of the digital computer, and the security controller transitions from a security to an application operating mode. In the application operating mode, the pre-boot security controller preserves data about pressings of the security keypad. A computer program executed by the digital computer may respond to recorded keypad pressing by initiating execution of a specific application computer program that a user associates with a specific key on the security keypad.

摘要翻译： 即使电源子系统不激励设备中的数字计算机的操作，电子设备中的预启动安全控制器也被激励。 安全控制器将管理员和用户密码存储在非易失性密码存储器中，以便与使用安全键盘输入的密码进行比较。 在输入匹配的密码后，安全控制器使电源子系统为数字计算机的操作提供能量，并且安全控制器从安全转换到应用操作模式。 在应用程序操作模式下，预启动安全控制器保留有关安全小键盘按下的数据。 由数字计算机执行的计算机程序可以通过启动用户与安全小键盘上的特定键相关联的特定应用程序计算机程序的执行来响应记录的小键盘按压。

公开(公告)号：EP1632838A3

公开(公告)日：2006-12-13

申请号：EP04020852.2

申请日：2004-09-02

申请人： O2 Micro International Limited

发明人： Lee S., Patrick ,  Sterling, Du ,  Oh Hyang-Kyun ,  Han Ching-Yung

IPC分类号： G06F3/02 ,  G06F1/00

CPC分类号： G06F21/83 ,  G06F3/021 ,  G06F21/32 ,  G06F21/34

摘要： A secure personal identification entry system provides an integrated approach to secure identification data entry. A controller resides in a secure PIN smart card keyboard that also contains a numeric keypad and a smart card reader and allows the numeric keypad to server two purposes: the first as a normal keypad in a keyboard and the second as a secure PIN entry keypad. The user inserts his smart card, with his PIN number information stored in the smart card's memory, into the smart card reader. An application program running on a PC that requires secure identification from the user requests that the user enter his PIN number using the keypad on the keyboard. The controller receives the PIN request and switches the keypad from normal mode to PIN entry mode. The keypad is switched to be dedicated to PIN entry and communicates with the controller. The user enters his PIN number into the keypad. The controller receives the PIN number and forwards the PIN number to the smart card. The smart card validates the PIN number and sends a pass/fail indicator back to the controller. The controller forwards the pass/fail indication to the PC. Another preferred embodiment of the invention connects a biometric device to the keyboard from which the controller obtains a user's biometric identification information.

公开(公告)号：EP1300055B1

公开(公告)日：2006-08-30

申请号：EP01924584.4

申请日：2001-04-03

申请人： O2 Micro International Limited ,  Chou, John ,  Lin, Yung-Lin

发明人： CHOU, John ,  LIN, Yung-Lin

IPC分类号： H05B37/02

CPC分类号： H05B41/3927 ,  H05B41/295 ,  H05B41/2985 ,  H05B41/3921 ,  Y10S315/04

摘要： An electronic ballast for lamps or tubes is provided. In one embodiment the present invention includes a ballast controller (12) that includes filament heating circuitry (26) and dimming circuitry. The filament heating circuitry (26) may include preheat dimming circuits which preheat the filaments for a predetermined time period prior to striking the lamp, and steady-state heating circuitry (28) that continually heats the filaments during steady state operation of the lamp (20). The steady state heating circuitry (28) may be adapted to heat the filaments inversely proportional to the dim desired value of the lamp (20). The dimming circuitry may include conventional analog dimming and/or burst mode dimming to define a wide range of dimming characteristics for the lamp.

公开(公告)号：EP1632838A2

公开(公告)日：2006-03-08

申请号：EP04020852.2

申请日：2004-09-02

申请人： O2 Micro International Limited

发明人： Lee S., Patrick ,  Sterling, Du ,  Oh Hyang-Kyun ,  Han Ching-Yung

IPC分类号： G06F3/02 ,  G06F1/00

CPC分类号： G06F21/83 ,  G06F3/021 ,  G06F21/32 ,  G06F21/34

摘要： A secure personal identification entry system provides an integrated approach to secure identification data entry. A controller resides in a secure PIN smart card keyboard that also contains a numeric keypad and a smart card reader and allows the numeric keypad to server two purposes: the first as a normal keypad in a keyboard and the second as a secure PIN entry keypad. The user inserts his smart card, with his PIN number information stored in the smart card's memory, into the smart card reader. An application program running on a PC that requires secure identification from the user requests that the user enter his PIN number using the keypad on the keyboard. The controller receives the PIN request and switches the keypad from normal mode to PIN entry mode. The keypad is switched to be dedicated to PIN entry and communicates with the controller. The user enters his PIN number into the keypad. The controller receives the PIN number and forwards the PIN number to the smart card. The smart card validates the PIN number and sends a pass/fail indicator back to the controller. The controller forwards the pass/fail indication to the PC. Another preferred embodiment of the invention connects a biometric device to the keyboard from which the controller obtains a user's biometric identification information.

摘要翻译： 安全的个人识别输入系统提供了一种集成的方法来确保识别数据输入。 控制器位于安全的PIN智能卡键盘中，该键盘还包含数字小键盘和智能卡读卡器，并允许数字小键盘服务于两个目的：第一个作为键盘中的普通键盘，第二个键入安全的PIN输入键盘。 用户将其智能卡存储在智能卡读卡器中的PIN码信息插入智能卡。 在PC上运行的需要用户安全识别的应用程序要求用户使用键盘上的键盘输入他的PIN码。 控制器接收PIN请求，并将键盘从正常模式切换到PIN输入模式。 键盘切换为专用于PIN输入并与控制器通信。 用户将PIN码输入键盘。 控制器收到PIN码并将PIN码转发到智能卡。 智能卡验证PIN号码，并将一个通过/失败指示器发送回控制器。 控制器将通过/失败指示转发到PC。 本发明的另一优选实施例将生物测定装置连接到键盘，控制器从该键盘获得用户的生物识别信息。

公开(公告)号：EP1074918B1

公开(公告)日：2005-11-02

申请号：EP00402198.6

申请日：2000-08-01

申请人： O2 Micro International Limited

发明人： Oh, Hyang-Kyun ,  Huang, Yishao Max ,  Brayden, Richard

IPC分类号： G06F13/40

CPC分类号： G06F13/4068 ,  G06F13/4081 ,  Y10S439/945

公开(公告)号：EP1001331B1

公开(公告)日：2004-08-11

申请号：EP99308752.7

申请日：1999-11-03

申请人： O2 Micro International Limited

发明人： Huang, Jung-Chih ,  Oh, Brian ,  Huang, Yishao Max ,  Du, Sterling ,  Reynoso, Aaron

IPC分类号： G06F1/00

CPC分类号： G06F21/81 ,  G06F2211/1097

公开(公告)号：EP1126524A3

公开(公告)日：2003-10-15

申请号：EP01400157.2

申请日：2001-01-19

申请人： O2 Micro International Limited

发明人： SHYR, You-Yuh

IPC分类号： H03M1/10 ,  H01L27/02

CPC分类号： H03M1/1014 ,  G01R31/316 ,  G11C17/18 ,  H03M1/742

摘要： A programmable after-package, on-chip reference voltage trim circuit for an integrated circuit having a plurality of programmable trim cells generating a programmed sequence. A converter is provided to convert the bit sequence into a trim current. The trim current is added to an initial value of a reference voltage to be trimmed, as generated by the integrated circuit. Once the correct value of the trim current is determined, isolation circuitry is programmed to isolate the trim circuitry from the remainder of the IC, thereby freeing the logic and package pins associated with the IC for use by users of the IC. The preferred trim circuitry includes fuses which are blown in accordance with a bit value supplied to the trim cell to permanently fix a trim current value, once a best fit value is determined.

公开(公告)号：EP1381955A2

公开(公告)日：2004-01-21

申请号：EP01990754.2

申请日：2001-11-29

申请人： O2 Micro International Limited ,  Du, Sterling ,  Chan, Reginia ,  Densham, William L. ,  Her, Sheau Chuen

发明人： DU, Sterling ,  CHAN, Reginia ,  DENSHAM, William, L. ,  HER, Sheau, Chuen ,  LAM, James ,  IVCHENKO, Volodymyr

IPC分类号： G06F13/38

CPC分类号： G06F1/32 ,  G06F3/165 ,  G06F9/4406 ,  G06F9/441 ,  G11B27/105 ,  G11B2220/61

摘要： A low-power digital audio decoding and playing system and method for computing devices provides a low-cost, low power-consumption, long-battery-life audio playing and decoding system, which may be used to play compressed audio files of various formats. In one aspect, a computer system adapted to play audio files comprises a system CPU (6), memory (4), at least one drive comprising compressed audio data (2), and an audio controller coupled to the system CPU (6), memory (4) and drive (2). The audio controller is adapted to cause the drive (2) to read the compressed audio data from the drive (2), to cause the system CPU (6) to decompress the compressed audio data from the drive (2) into decompressed audio data, to cause the decompressed audio to be stored in the memory (4), and to cause the decompressed audio data to be retrieved from the memory (4) for playing.

摘要翻译： 用于计算设备的低功率数字音频解码和播放系统和方法提供了低成本，低功耗，长电池寿命的音频播放和解码系统，其可以用于播放各种格式的压缩音频文件。 在一个方面，适于播放音频文件的计算机系统包括系统CPU（6），存储器（4），包括压缩音频数据（2）的至少一个驱动器以及耦合到系统CPU（6）的音频控制器， 内存（4）和驱动器（2）。 音频控制器适用于使驱动器（2）从驱动器（2）读取压缩音频数据，使系统CPU（6）将来自驱动器（2）的压缩音频数据解压缩为解压缩音频数据， 使解压缩的音频存储在存储器（4）中，并且使解压缩的音频数据从存储器（4）中取回用于播放。

公开(公告)号：EP1300055A1

公开(公告)日：2003-04-09

申请号：EP01924584.4

申请日：2001-04-03

申请人： O2 Micro International Limited ,  Chou, John ,  Lin, Yung-Lin

发明人： CHOU, John ,  LIN, Yung-Lin

IPC分类号： H05B37/02

CPC分类号： H05B41/3927 ,  H05B41/295 ,  H05B41/2985 ,  H05B41/3921 ,  Y10S315/04

摘要： An electronic ballast for lamps or tubes is provided. In one embodiment the present invention includes a ballast controller (12) that includes filament heating circuitry (26) and dimming circuitry. The filament heating circuitry (26) may include preheat dimming circuits which preheat the filaments for a predetermined time period prior to striking the lamp, and steady-state heating circuitry (28) that continually heats the filaments during steady state operation of the lamp (20). The steady state heating circuitry (28) may be adapted to heat the filaments inversely proportional to the dim desired value of the lamp (20). The dimming circuitry may include conventional analog dimming and/or burst mode dimming to define a wide range of dimming characteristics for the lamp.

摘要翻译： 提供灯或电子管的电子镇流器。 在一个实施例中，本发明包括镇流器控制器（12），其包括灯丝加热电路（26）和调光电路。 灯丝加热电路（26）可以包括预热调光电路，其在击打灯之前将灯丝预热预定时间段，以及稳态加热电路（28），其在灯（20）的稳态操作期间连续地加热灯丝 ）。 稳态加热电路（28）可以适于以与灯（20）的暗淡期望值成反比的方式加热灯丝。 调光电路可以包括传统的模拟调光和/或突发模式调光以定义灯的宽范围的调光特性。