Title :
Comments on "Residue arithmetic VLSI array architecture for manipulator pseudo-inverse Jacobian computation" [with reply]
Author :
Koc, C.K. ; Chang, P.R. ; Lee, C. S. George
Author_Institution :
Dept. of Electr. Eng., Houston Univ., TX, USA
Abstract :
The commenter indicates that in the above-mentioned paper (see ibid., vol.5, no.5, p.569-82 (1989)) the proposed pipelined array architecture for the mixed-radix conversion problem is not as efficient and suitable for VLSI implementation as claimed. The commenter identifies the shortcomings of the design and then gives an efficient systolic/wavefront array that requires fewer hardware resources. The authors reply that this is another valid design for the mixed-radix conversion problem that avoids broadcasting; however, the triangular array of buffers is still required in the design for the data-format conversion, and this problem is not addressed. Since a semisystolic design was not given, the comparison between the original design and the semisystolic design in terms of buffers is premature.<>
Keywords :
VLSI; digital arithmetic; network synthesis; parallel architectures; pipeline processing; robots; systolic arrays; VLSI array architecture; buffers; manipulator; mixed-radix conversion; pipelined array architecture; pseudo-inverse Jacobian computation; residue arithmetic; systolic/wavefront array; Algorithm design and analysis; Arithmetic; Binary trees; Broadcasting; Computer architecture; Hardware; Jacobian matrices; Processor scheduling; Systolic arrays; Very large scale integration;
Journal_Title :
Robotics and Automation, IEEE Transactions on