Patents by Inventor Ta-Lin Chang

Ta-Lin Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5734924
    Abstract: A host adapter contains a RISC processor, a local memory, and a memory management unit that permits the RISC processor and a host computer system to access a local memory. The host computer system writes command descriptions directly into the local RAM. The RISC processor retrieves and processes the command descriptions. The local RAM may be divided into numbered command description blocks having a fixed size and format. In standard bus protocols, such as SCSI-2, block numbers are used as tag messages. Such tag messages allow the host adapter to quickly identify information used when an SCSI I/O request is resumed. The command description blocks may be linked into lists, including an active list containing command description blocks that are ready for the RISC processor and a free list containing command description blocks that are available for use by the host computer.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: March 31, 1998
    Assignee: Advanced System Products, Inc.
    Inventors: Yu-Ping Cheng, Ta-Lin Chang, Shih-Tsung Hwang
  • Patent number: 5359468
    Abstract: In a digital data storage audio tape system having a host device interface unit, a main data buffer manager, a main data buffer, a processor, a data separator, a tape drive unit, and a read/write channel, this invention comprises a formatter providing track construction, encoding and decoding, error correction, and direct memory access of digital data transmitted between the host device unit and the tape drive unit and a frame buffer for buffering digital data for encoding and decoding, and error correction. The formatter is coupled between the main data buffer manager, via a direct memory access channel, and the read/write channel of the tape drive, and further is coupled to the frame buffer. The formatter is coupled to and responsive to instruction control by the processor in conjunction with instruction control of the tape drive unit by the processor.
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: October 25, 1994
    Assignee: R-Byte, Inc.
    Inventors: Edward J. Rhodes, Daryl K. Adams, Clifford R. Berry, Ta-Lin Chang, David R. Lee