US Patent No: 6,728,828

Number of patents in Portfolio can not be more than 2000

Synchronous data transfer system

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Abstract

A memory circuit (14) having features specifically adapted to permit the memory circuit (14) to serve as a video frame memory is disclosed. The memory circuit (14) contains a dynamic random access memory array (24) with buffers (18, 20) on input and output data ports (22) thereof to permit asynchronous read, write and refresh accesses to the memory array (24). The memory circuit (14) is accessed both serially and randomly. An address generator (28) contains an address buffer register (36) which stores a random access address and an address sequencer (40) which provides a stream of addresses to the memory array (24). An initial address for the stream of the addresses is the random access address stored in the address buffer register (36).

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TEXAS INSTRUMENTS INCORPORATEDDALLAS, TX17006

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dolait, Jean-Pierre Villeneuve-Loubet, FR 26 86
Frantz, Gene A Missouri City, TX 49 740
Hashimoto, Masashi Kamakura, JP 275 2064
Moravec, John Victor Willow Springs, IL 23 50

Cited Art

Patent Info (Count) # Cites Year
 
TEXAS INSTRUMENTS INCORPORATED (13)
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4,321,695 High speed serial access semiconductor memory with fault tolerant feature 51 1979
4,388,696 Data processing system having dual output modes 29 1980
4,811,202 Quadruply extended time multiplexed information bus for reducing the `pin out` configuration of a semiconductor chip package 93 1981
4,443,864 Memory system for microprocessor with multiplexed address/data bus 66 1981
4,581,721 Memory apparatus with random and sequential addressing 37 1982
4,509,142 Semiconductor memory device with pipeline access 56 1982
4,567,579 Dynamic memory with high speed nibble mode 85 1983
4,618,947 Dynamic memory with improved address counter for serial modes 98 1984
4,685,089 High speed, low-power nibble mode circuitry for dynamic memory 107 1984
4,667,313 Serially accessed semiconductor memory with tapped shift register 54 1985
4,999,814 Dynamic memory with internal refresh circuit and having virtually refresh-free capability 55 1987
4,975,763 Edge-mounted, surface-mount package for semiconductor integrated circuit devices 77 1988
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (4)
4,225,947 Three phase line-addressable serial-parallel-serial storage array 30 1978
4,286,321 Common bus communication system in which the width of the address field is greater than the number of lines on the bus 75 1979
4,608,669 Self contained array timing 54 1984
4,649,516 Dynamic row buffer circuit for DRAM 63 1984
 
INTEL CORPORATION (3)
4,315,308 Interface between a microprocessor chip and peripheral subsystems 178 1978
4,449,207 Byte-wide dynamic RAM with multiplexed internal buses 63 1982
4,595,923 Improved terminator for high speed data bus 65 1984
 
UNISYS CORPORATION (3)
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BELL TELEPHONE LABORATORIES, INCORPORATED (2)
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ELXSI CORPORATION, A DE CORP. (2)
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4,519,034 I/O Bus clock 101 1982
 
LOCKHEED MARTIN CORPORATION (2)
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NATIONAL SEMICONDUCTOR CORPORATION (2)
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NCR CORPORATION (2)
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NEC ELECTRONICS CORPORATION (2)
4,633,441 Dual port memory circuit 73 1984
4,899,316 Semiconductor memory device having serial writing scheme 65 1986
 
SONY CORPORATION (2)
4,415,994 Random access memory arrangements 48 1981
4,558,377 Digital television apparatus 42 1982
 
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA (2)
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ALCATEL NETWORK SYSTEMS, INC. (1)
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APROLASE DEVELOPMENT CO., LLC (1)
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DATAPOINT CORPORATION (1)
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F. & S. CORPORATION OF COLUMBUS, (1)
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FREESCALE SEMICONDUCTOR, INC. (1)
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FUJITSU LIMITED (1)
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GENERAL ELECTRIC COMPANY (1)
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INTERGRAPH HARDWARE TECHNOLOGIES COMPANY (1)
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IRVINE SENSORS CORPORATION (1)
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KABUSHIKI KAISHA TOSHIBA (1)
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LORAL AEROSPACE CORP. A CORPORATION OF DE (1)
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MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
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MIPS TECHNOLOGIES, INC. (1)
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MOTOROLA, INC. (1)
4,654,655 Multi-user serial data bus 87 1984
 
MUFFLER MAN, INC., A MI CORP. (1)
4,608,678 Semiconductor memory device for serial scan applications 35 1983
 
NEC CORPORATION (1)
4,818,985 Bus arbitration network capable of quickly carrying out arbitration among bus masters 70 1987
 
RAMBUS INC. (1)
5,319,755 Integrated circuit I/O using high performance bus interface 269 1992
 
RCA LICENSING CORPORATION, TWO INDEPENDENCE WAY, PRINCETON, NJ 08540, A CORP. OF DE (1)
4,789,960 Dual port video memory system having semi-synchronous data input and data output 55 1987
 
SAXPY COMPUTER, INC., A CA. CORP. (1)
4,837,682 Bus arbitration system and method 98 1987
 
SUN MICROSYSTEMS, INC. (1)
4,435,792 Raster memory manipulation apparatus 111 1982
 
TERADYNE, INC. (1)
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TEXTRON INC. (1)
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XEROX CORPORATION (1)
5,023,488 Drivers and receivers for interfacing VLSI CMOS circuits to transmission lines 193 1990
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (3)
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4,333,142 Self-configurable computer and memory system 55 1979
4,770,640 Electrical interconnection device for integrated circuits 78 1983

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
ANALOG DEVICES, INC. (1)
7,248,661 Data transfer between phase independent clock domains 0 2003
 
HYNIX SEMICONDUCTOR INC. (1)
7,733,739 Synchronous semiconductor memory device 0 2008

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