Title:
SEMICONDUCTOR INTEGRATED CIRCUIT, SEMICONDUCTOR INTEGRATED CIRCUIT CONTROL DEVICE, LOAD DISTRIBUTION METHOD, LOAD DISTRIBUTION PROGRAM, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/069029
Kind Code:
A1
Abstract:
In a semiconductor integrated circuit having a plurality of CPU, it is possible to
disperse a damage to respective CPU with a higher accuracy than in the conventional technique.
Damage control means (100) includes: switching judgment means (110) having
a function to judge the CPU configuration which performs smoothing of the damage
ratio according to the damage ratio of all or some of the CPU; and switching means
(120) having a function to perform switching of I/O signals of all the CPU. The
switching judgment means (110) observes the damage ratio as an index calculated from
values such as the temperature, voltage, current consumption amount, operation ratio,
the number of accesses to the resources in the CPU, and the like and reports the
CPU configuration to be changed to the switching means (120) by using the calculation method
for smoothing the damage ratio of each CPU. The switching means (120) makes a
connection to the I/O signal of all the CPU and a system bus (60) and switches the
I/O signal of the CPU to be switched according to the report from the switching judgment
means (120).
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Inventors:
INOUE, Hiroaki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 1088001, JP)
井上 浩明 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 1088001, JP)
TAKAGI, Masamichi (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 1088001, JP)
井上 浩明 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 1088001, JP)
TAKAGI, Masamichi (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 1088001, JP)
Application Number:
JP2007/072694
Publication Date:
June 12, 2008
Filing Date:
November 22, 2007
Export Citation:
Assignee:
NEC CORPORATION (7-1 Shiba 5-chome, Minato-ku Tokyo, 01, 1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目７番１号 Tokyo, 1088001, JP)
INOUE, Hiroaki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 1088001, JP)
井上 浩明 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目７番１号 Tokyo, 1088001, JP)
INOUE, Hiroaki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 1088001, JP)
井上 浩明 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 1088001, JP)
International Classes:
G06F9/50
Attorney, Agent or Firm:
MARUYAMA, Takao (MARUYAMA PATENT OFFICE, SAM Build. 3floor38-23, Higashi-Ikebukuro 2-chom, Toshima-ku Tokyo, 170-0013, JP)
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