公开(公告)号：EP0749657A1

公开(公告)日：1996-12-27

申请号：EP93921455.0

申请日：1993-09-13

申请人： MOTOROLA, INC.

发明人： KANE, John, Richard ,  SCHWENDEMAN, Robert, John ,  WRIGHT, James, A.

IPC分类号： H04M11 ,  H04W88

CPC分类号： H04W88/185 ,  H04M11/022

摘要： A method and apparatus for reliably delivering messages (200) from a central terminal (102) to a communication receiver (130) in a communication system (100), such as an electronic mail system. The central terminal (102) transmits messages (1300) to the communication receiver (130) and the communication receiver (130) receives transmitted messages (1300) over a first communication medium (122). The communication receiver (130) reconciles messages that it failed to receive over the first communication medium (122) with the central terminal (102) over a second communication medium (152). The reconciliation process between the communication receiver (130) and the central terminal (102) utilizes message identifiers (1308) transmitted with the messages (1300) to identify the messages (1300) being reconciled.

公开(公告)号：EP0683964A1

公开(公告)日：1995-11-29

申请号：EP94926513.0

申请日：1994-08-15

申请人： MOTOROLA, INC.

发明人： HLUCHYJ, Michael, G. ,  COOK, Steven, R.

IPC分类号： H04L12 ,  H04Q11

CPC分类号： H04L49/309 ,  H04L49/20 ,  H04L49/30 ,  H04L49/3009 ,  H04L49/3081 ,  H04L2012/5681 ,  H04Q11/0478

摘要： A cell processor and a method for a cell processor (404) utilize Cell Transit Queues (414) to partition cell processing of cells from a Cell Interconnect in a cell relay network, thereby facilitating cost-efficient cell transmission from a cell interconnect to a node output.

公开(公告)号：EP0680679A1

公开(公告)日：1995-11-08

申请号：EP94925779.0

申请日：1994-08-08

申请人： CODEX CORPORATION, a subsidiary company of MOTOROLA INC.

发明人： HLUCHYJ, Michael, G. ,  BHARGAVA, Amit ,  HUMBLET, Pierre, A.

IPC分类号： H04L12

CPC分类号： H04L12/5602 ,  H04L49/3081 ,  H04L49/309 ,  H04L2012/5632 ,  H04L2012/5649

摘要： A device and method (422) allocate bandwidth on internodal links (424) in a communication network such that worst case maximum delays and worst case average delays in a packet oriented network are guaranteed while providing statistical gains in maintaining predetermined end-to-end delay QOS objectives for different traffic types.

公开(公告)号：EP0676096A1

公开(公告)日：1995-10-11

申请号：EP94930438.0

申请日：1994-09-16

申请人： MOTOROLA, INC.

发明人： LIM, Ricardo ,  DUTKIEWICZ, Marek

IPC分类号： H04L27

CPC分类号： H04L27/0008

摘要： A data demodulation logic unit (200) and method used therein, adaptable to multiple data protocols, including an arithmetic logic unit (205) that is architecturally optimized to demodulate multiple data protocols under the control of a hardware based state machine (209) that operates in a selectable mode that corresponds to one of multiple data protocols.

公开(公告)号：EP0672318A1

公开(公告)日：1995-09-20

申请号：EP94926485.0

申请日：1994-08-08

申请人： CODEX CORPORATION

发明人： KLAYMAN, Jeffrey, T.

IPC分类号： G06T9 ,  H03M7

CPC分类号： G06T9/005 ,  H03M7/3088

摘要： A method (700) and device (1100) increase throughput of a data compression encoder or decoder by using children arrays instead of linked lists in the building and maintenance of the tree. A children array with elements corresponding to each of the input symbols is allocated to a node. An input character is used as an index into the children array. The search result is determined by the value in the children array. Where a search is successful, the value in the children array is a pointer to the child node. A node is added by storing a pointer to the node in the parent's children array at the location indexed by the input character and is deleted by storing a NULL value in the parent's children array where the child node had been. The search, add, and delete operations become very efficient, and each operation has a constant execution time.

公开(公告)号：EP0671096A1

公开(公告)日：1995-09-13

申请号：EP94926482.0

申请日：1994-08-08

申请人： CODEX, INC., a subsidiary company of MOTOROLA INC.

发明人： HLUCHYJ, Michael, G. ,  BHARGAVA, Amit

IPC分类号： H04L29

CPC分类号： H04L29/06

摘要： A communication network (11) transports packetized constant bit rate data from a source (12) to a receiver (20). To improve the transport of the data across the network (11), a method is used to enqueue the packets in a buffer (44) prior to playing out the constant bit rate data to the receiver (20).

公开(公告)号：EP0671092A1

公开(公告)日：1995-09-13

申请号：EP94922507.0

申请日：1994-07-11

申请人： MOTOROLA, INC.

发明人： FINKELSTEIN, Louis, D. ,  KOSMACH, James, J. ,  SMOLINSKE, Jeffrey, Charles

IPC分类号： H04H1 ,  H04L1 ,  H04L9 ,  H04L29 ,  H04Q7

CPC分类号： H04L63/0457 ,  H04L1/1642 ,  H04L9/065 ,  H04L29/06

摘要： A method and apparatus for providing cryptographic protection of a data stream are described in accordance with the Open Systems Interconnection (OSI) model for a communication system. This cryptographic protection is accomplished on the transmitting side by assigning a packet sequence number to a packet derived from a data stream received from a network layer (110). Subsequently, a transmit overflow sequence number (124) is updated as a function of the packet sequence number (116). Then, prior to communicating the packet and the packet sequence number on a physical layer, the packet is encrypted as a function of the packet sequence number (116) and the transmit overflow sequence number (124). On the receiving side, the packet sequence number is extracted (166) from the physical layer (160). In addition, a receive overflow sequence number (174) is updated as a function of the packet sequence number (172). Finally, the encrypted packet is decrypted as a function of the packet sequence number (176) and the receive overflow sequence number (178). In addition, a transmitting and a receiving communication unit for use in a communication system which includes cryptographic protection of a data stream is described.

公开(公告)号：EP0670090A1

公开(公告)日：1995-09-06

申请号：EP94924500.0

申请日：1994-07-25

申请人： MOTOROLA, INC.

发明人： LING, Fuyun

IPC分类号： H04B1 ,  H04B7 ,  H04B17 ,  H04J13

CPC分类号： H04W52/04 ,  H04B17/327

摘要： A method and apparatus is provided for estimating signal power. This is accomplished by demodulating a received communication signal to derive a stream of samples. These samples may consist of either reference samples (132), data samples (142), or a combination thereof. An estimate of the power (118) of the received communication signal is then generated as a function of the stream of samples (144). The signal power estimate (148) may, for example, be used in a power control algorithm by setting a power control indicator (121), in response to a comparison between the signal power estimate and a predetermined threshold. Subsequently, the power control indicator (171) is transmitted over a communication channel to another communication unit. The communication unit detects a power control indicator (171) within a signal (120) received from over the communication channel and adjusts a particular signal transmission power of a signal transmitter in response to the detected power control indicator (171).

公开(公告)号：EP0670060A1

公开(公告)日：1995-09-06

申请号：EP94925777.0

申请日：1994-08-08

申请人： CODEX, INC., a subsidiary company of MOTOROLA INC.

发明人： GILBERT, Yuval ,  ST. PIERRE, Edgar ,  HODGSON, Brian ,  BARBELL, Benita

IPC分类号： H04L12

CPC分类号： H04L41/0856 ,  H04L41/0213 ,  H04L41/022 ,  H04L41/024 ,  H04L41/042 ,  H04L41/046 ,  H04L41/0806

摘要： A communication system allows for the separation between the logical, external view of a network manager (10, 12) and the physical, internal view of the communication device (18, 20). A single management agent (108, 110) represents a single network manager (100, 102). The management agent (108, 110) is responsible for interpreting requests from that network manager (100, 102).

公开(公告)号：EP0669072A1

公开(公告)日：1995-08-30

申请号：EP93923394.0

申请日：1993-10-14

申请人： MOTOROLA, INC.

发明人： CANNON, Gregory, Lewis ,  MACKO, William, John ,  FULLER, Gregory, William

IPC分类号： G08B5 ,  H04W88

CPC分类号： H04W88/023 ,  G08B5/228

摘要： A selective call messaging peripheral (100) capable of receiving at least one message and communicating it to an electronic information processing device (200). The peripheral (100) comprises a microcontroller (105) including a processor (106) for executing a microcode program that controls operation of the peripheral and a receiver (103) that operates to receive and demodulate an information signal to provide a recovered information signal including an address signal and the message. A correlator (109) compares the recovered address signal with a predetermined address associated with the peripheral and generates an address detection when the recovered and predetermined addresses are substantially equivalent, indicating selection of the peripheral. A PCMCIA memory only interface (119) communicates notification of address detection to the electronic information processing device (200), and in response to a message read command received from the electronic information processing device (200), the microcontroller (105) configures the PCMCIA interface (119) to permit the electronic information processing device (200) to read the message from the peripheral (100).