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公开(公告)号：EP1407627B1
公开(公告)日：2006-06-28
申请号：EP02742072.8
申请日：2002-06-12
发明人： BARNES, Brian, C. , SMITH, David, W. , COLE, Terry, L. , SCHMIDT, Rodney , STRONGIN, Geoffrey, S. , BARCLAY, Michael
CPC分类号： H04L63/0428 , G06F21/55 , H04L63/08
摘要： A communication system (10) includes a physical layer hardware unit (220) and a processing unit (100). The physical layer hardware unit (220) is adapted to communicate data over a communications channel (40) in accordance with assigned transmission parameters. The physical layer hardware unit (220) is adapted to receive an incoming signal over the communications channel (40) and sample the incoming signal to generate a digital received signal. The processing unit (100) is adapted to execute a software driver (240) including program instructions adapted to extract control codes from the digital received signal, generate an authentication code, and transfer the control codes and the authentication code to the physical layer hardware unit (220). The physical layer hardware unit (220) is adapted to signal a security violation in response to the control codes being inconsistent with the authentication code.
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公开(公告)号：EP1405536B1
公开(公告)日：2006-05-03
申请号：EP02737500.5
申请日：2002-06-12
发明人： SCHMIDT, Rodney , STRONGIN, Geoffrey, S. , SMITH, David, W. , BARNES, Brian, C. , COLE, Terry, L. , BARCLAY, Michael
CPC分类号： H04L63/104 , G06F12/1491
摘要： A communications system (10) includes physical layer hardware (180) and a processing unit (105). The physical layer hardware (180) is adapted to communicate data over a communications channel (40) in accordance with a plurality of control codes. The physical layer hardware (180) is adapted to demodulate an incoming analog signal to generate a digital receive signal and modulate a digital transmit signal to generate an analog transmit signal. The processing unit (105) is adapted to execute a privileged driver (190) for interfacing with the physical layer hardware (180). The privileged driver (190) includes program instructions for implementing a protocol layer (80) to decode the digital receive signal, encode the digital transmit signal, and configure the physical layer harware (180) for receipt of the digital receive signal and transmission of the digital transmit signal based on the plurality of control codes. A method for configuring a transceiver (50) includes demodulating an incoming analog signal to generate a digital receive signal based on a plurality of control codes; modulating a digital transmit signal to generate an analog transmit signal based on the control codes; and executing a privileged driver (190) for configuring the plurality of control codes.
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3.发明公开A MULTI-THREADED MICROPROCESSOR CONFIGURED TO EXECUTE INTERRUPT SERVICE ROUTINES AS A THREAD 失效多线程微处理器设计用于执行中断处理例程中的使用线程
公开(公告)号：EP0898743A1
公开(公告)日：1999-03-03
申请号：EP97924753.0
申请日：1997-05-16
IPC分类号： G06F9
CPC分类号： G06F9/4812 , G06F9/3851 , G06F9/3885 , G06F9/462
摘要： A microprocessor including a context file configured to store multiple contexts is provided. The microprocessor may execute multiple threads, each thread having its own context within the microprocessor. In one embodiment, the present microprocessor is capable of executing at least two threads concurrently: a task and an interrupt service routine. Interrupt service routines may be executed without disturbing a task's context and without performing a context save operation. Instead, the interrupt service routine accesses a context which is independent of the context of the task. In another embodiment, the context file includes multiple interrupt service routine contexts. Multiple ISR context storages allow for nested interrupts to be performed concurrently. In yet another embodiment, the microprocessor is configured to execute multiple tasks and multiple interrupt service routines concurrently. Multiple tasks may be executed concurrently by the microprocessor in addition to executing multiple interrupt service routines concurrently. In still another embodiment, the microprocessor includes a primary context and multiple local context storages coupled to each of its execution units. A given execution unit may execute instructions referencing the primary context or the local context connected thereto.
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公开(公告)号：EP1407628B1
公开(公告)日：2006-04-05
申请号：EP02742079.3
申请日：2002-06-12
发明人： SMITH, David, W. , BARNES, Brian, C. , COLE, Terry, L. , SCHMIDT, Rodney , STRONGIN, Geoffrey, S. , BARCLAY, Michael
摘要： A communications system (10) includes a physical layer hardware unit (220) and a processing unit (110). The physical layer hardware unit (220) is adapted to communicate data over a communications channel (40) in accordance with assigned transmission parameters. The physical layer hardware unit (220) is adapted to receive an incoming signal over the communications channel (40) and sample the incoming signal to generate a digital received signal. The processing unit (110) is adapted to execute a standard mode driver (240) in a standard mode of operation and a privileged mode driver (250) in a privileged mode of operation. The standard mode driver (240) includes program instructions adapted to extract control codes (280) from the digital received signal and configure the physical layer hardware unit (220) assigned transmission parameters based on the control codes (280). The privileged mode driver (250) includes prograni instructions adapted to independently extract secure control codes (310) from the digital received signal, determine an operational characteristic of the physical layer hardware unit (220), and signal a security violation in response to the operational characteristic being inconsistent with the secure control codes (310).
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5.发明授权SOFTWARE MODEM WITH PRIVILEGED MODE DECRYPTION OF CONTROL CODES 有权与BEVORRECHTIGTEM操作软件调制解调器控制参数DECODE
公开(公告)号：EP1405491B1
公开(公告)日：2006-03-01
申请号：EP02752048.5
申请日：2002-06-12
发明人： SMITH, David, W. , BARNES, Brian, C. , COLE, Terry, L. , SCHMIDT, Rodney , STRONGIN, Geoffrey, S. , BARCLAY, Michael
摘要： A communications system (10) includes a physical layer hardware unit (220) and a processing unit (110). The physical layer hardware unit (220) is adapted to communicate data over a communications channel (40) in accordance with assigned transmission parameters. The physical layer hardware unit (220) is adapted to receive an incoming signal over the communications channel (40) and sample the incoming signal to generate a digital received signal. The processing unit (110) is adapted to execute a standard mode driver (240) in a standard mode of operation and a privileged mode driver (250) in a privileged mode of operation. The standard mode driver (240) includes program instructions adapted to extract encrypted data (260) from the digital received signal and pass the encrypted data (260) to the privileged mode driver (250). The privileged mode driver (250) includes program instructions adapted to decrypt the encrypted data (260) to generate decrypted data (270) including control codes (280) and transfer the control codes (280) to the physical layer hardware unit (220). The physical layer hardware unit (220) is adapted to configure its assigned transmission parameters based on the control codes (280). A method for configuring a transceiver (50) includes receiving encrypted data (260) over a communications channel in a standard processing mode of a processing unit (110); transitioning the processing unit (110) into a privileged processing mode; decrypting the encrypted data (260) in the privileged processing mode; extracting control codes (280) from the decrypted data (270) in the privileged processing mode; and transmitting an upstream signal over the communications channel (40) based on transmission assignments defined by the control codes (280).
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6.发明公开METHOD AND APPARATUS FOR MULTI-TABLE ACCESSING OF INPUT/OUTPUT DEVICES USING TARGET SECURITY 审中-公开方法和设备访问输入/输出设备的多个表使用目标安全
公开(公告)号：EP1468363A2
公开(公告)日：2004-10-20
申请号：EP02759662.6
申请日：2002-09-12
IPC分类号： G06F12/14
CPC分类号： G06F12/1491
摘要： A method and an apparatus for performing an I/O device access using targeted security. A software object (350) is executed. A security level for the software object (350) is established. A multi-table input/output (I/O) space access is performed using at least one of the security levels. The function of the software object (350) is executed.
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公开(公告)号：EP1407627A1
公开(公告)日：2004-04-14
申请号：EP02742072.8
申请日：2002-06-12
发明人： BARNES, Brian, C. , SMITH, David, W. , COLE, Terry, L. , SCHMIDT, Rodney , STRONGIN, Geoffrey, S. , BARCLAY, Michael
CPC分类号： H04L63/0428 , G06F21/55 , H04L63/08
摘要： A communication system (10) includes a physical layer hardware unit (220) and a processing unit (100). The physical layer hardware unit (220) is adapted to communicate data over a communications channel (40) in accordance with assigned transmission parameters. The physical layer hardware unit (220) is adapted to receive an incoming signal over the communications channel (40) and sample the incoming signal to generate a digital received signal. The processing unit (100) is adapted to execute a software driver (240) including program instructions adapted to extract control codes from the digital received signal, generate an authentication code, and transfer the control codes and the authentication code to the physical layer hardware unit (220). The physical layer hardware unit (220) is adapted to signal a security violation in response to the control codes being inconsistent with the authentication code.
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公开(公告)号：EP1374064A2
公开(公告)日：2004-01-02
申请号：EP02704314.0
申请日：2002-02-01
IPC分类号： G06F12/14
CPC分类号： G06F21/79 , G06F12/1483
摘要： The present invention provides a method and apparatus for securing portions of a memory. The method includes identifying information for protection and indicating at least one physical address of a memory that houses the information as at least one of read and write disabled. The method includes receiving a request from a program to access the information. The method further includes accessing the information in response to determining that the program has the authority to access the information.
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公开(公告)号：EP1412834B1
公开(公告)日：2017-08-16
申请号：EP02744332.4
申请日：2002-06-12
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公开(公告)号：EP1509843A1
公开(公告)日：2005-03-02
申请号：EP02797355.1
申请日：2002-12-17
CPC分类号： G06F21/53 , G06F21/71 , G06F2221/2153
摘要： A method and system for handling a security exception. The method includes creating a security exception stack frame (900) in secure memory at a base address. The method also includes writing a faulting code sequence address and one or more register values into the security exception stack frame (900), and executing a plurality of security exception instructions.
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