US Patent No: 5,187,708

Number of patents in Portfolio can not be more than 2000

Communication device for layered protocols

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Importance

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Abstract

A communication device comprising an upper layer communication control unit having a plurality of upper layer communication protocols; a lower layer communication control unit, subordinated to the upper layer communication control unit, having a function to forming an inter-upper-layer communication by transmitting the data sent from the upper layer communication control unit to a communication transmission path or sending the data received from the communication path to the upper layer communication control unit; and a communication path register memory for storing a set of the address of a communication partner device, the discriminator of the upper layer communication protocol being used and the name of a communication path. In the above communication device, a request of setting/cancelling of the communication path, or a transmission request as well as designation of the communication path to be used is performed from the upper layer communication control unit to the lower layer communication control unit, and indication of setting/cancelling of the communication path, or indication of the communication path used as well as reception indication is performed from the lower layer communication control unit to the upper layer communication control unit.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.OSAKA27275

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakatani, Naofumi Osaka, JP 18 167
Nakatsu, Hiromasa Osaka, JP 4 90
Ueno, Reiko Takarazuka, JP 17 130

Cited Art

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
4,893,307 Method and apparatus for linking SNA terminals to an SNA host over a packet switched communications network 163 1988
4,991,133 Specialized communications processor for layered protocols 145 1988
 
DATAPOINT CORPORATION (1)
4,941,089 Input/output network for computer system 144 1986
 
NEC CORPORATION (1)
4,922,484 ISDN remote switching unit for accommodating analog and digital lines 26 1988

Patent Citation Ranking

Forward Cites

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BROADCOM CORPORATION (4)
7,080,788 Modular, portable data processing terminal for use in a radio frequency communication network 4 2003
7,757,956 Modular, portable data processing terminal for use in a radio frequency communication network 17 2006
7,853,254 Modular, portable data processing terminal for use in a radio frequency communication network 0 2008
7,992,788 Method used by a communication device for use in a communication channel 0 2009
 
CANON KABUSHIKI KAISHA (3)
6,477,570 Information processing system and method therefor 15 1997
7,035,947 Communication system, information processing apparatus, output apparatus, control method, and memory medium 0 2003
7,809,845 Apparatus and method for transmitting command 1 2004
 
EXCEL SWITCHING CORPORATION (2)
6,119,187 Telecommunication system with universal API using generic messages having user functionality associated with predetermined functions, primitives and logical states for defining PPL component state machines 4 1998
6,134,618 Telecommunication switch having a universal API with a single call processing message including user-definable data and response message each having a generic format 18 1999
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
5,425,028 Protocol selection and address resolution for programs running in heterogeneous networks 103 1992
5,790,553 Seamless peer-to-peer communications in a layered communications architecture 47 1995
 
SONY CORPORATION (2)
5,550,979 Audio video system 9 1993
5,802,300 Audio video system 10 1996
 
WANDEL & GOLTERMANN TECHNOLOGIES, INC. (2)
5,850,388 Protocol analyzer for monitoring digital transmission networks 172 1996
5,850,386 Protocol analyzer for monitoring digital transmission networks 115 1996
 
D2B SYSTEMS COMPANY LIMITED (1)
5,675,571 D2B divice address initialization by use of default address 4 1995
 
DIGI INTERNATIONAL INC. (1)
6,047,319 Network terminal server with full API implementation 41 1996
 
FUJITSU LIMITED (1)
5,373,504 Apparatus and a method for setting a communication path 122 1993
 
GLOBALFOUNDRIES INC. (1)
6,332,173 UART automatic parity support for frames with address bits 5 1998
 
INTEL MOBILE COMMUNICATIONS GMBH (1)
6,064,660 GSM transceiver with portable protocol stack 2 1996
 
MOTOROLA MOBILITY LLC (1)
5,737,404 Distributed signaling system seven call handling system 25 1996
 
NEC CORPORATION (1)
7,006,442 Communication control system and control method thereof 6 2000
 
RENESAS ELECTRONICS CORPORATION (1)
5,408,661 Communication processor 14 1992
 
RPX CORPORATION (1)
5,784,567 System and method for coordinating communication between layers of a layered communication system 1 1995
 
SAMSUNG ELECTRONICS CO., LTD. (1)
5,579,308 Crossbar/hub arrangement for multimedia network 81 1995
 
SIEMENS AKTIENGESELLSCHAFT (1)
7,970,969 Method for communication on a multidrop bus of a magnetic resonance system 0 2006
 
SOUTHERN CALIFORNIA EDISON COMPANY (1)
5,490,134 Versatile communications controller 52 1993
 
U.S. PHILIPS CORPORATION (1)
5,436,618 Multi-apparatus consumer electronics system 7 1993