公开(公告)号：JP2000244230A

公开(公告)日：2000-09-08

申请号：JP3961699

申请日：1999-02-18

Applicant: IBM

Inventor： ASANO TAKESHI ,  SAKURAI AKIHISA ,  NAITO ZAISEI

IPC: H01Q13/08 ,  H01Q1/22 ,  H01Q1/24 ,  H01Q1/38 ,  H01Q1/40 ,  H01Q9/04 ,  H01Q9/28 ,  H01Q19/10

Abstract: PROBLEM TO BE SOLVED: To provide a patch antenna having new configuration and to provide an electronic apparatus using the antenna. SOLUTION: A dielectric plate constituting a patch antenna 1 is composed of the wall part 2 of a housing constituting an electronic apparatus. A ground plate 3 constituting the patch antenna 1 is formed on the inner surface 2B of the wall part 2 of the housing, and a patch constituting the patch antenna is formed on the outer surface 2A of the wall part 2 of the housing. Thus, the patch antenna 1 is constituted integrally with the electronic equipment by using a space which originally exists in the housing constituting the electronic apparatus without the need of a special space.

公开(公告)号：JP2000172387A

公开(公告)日：2000-06-23

申请号：JP34727898

申请日：1998-12-07

Applicant: IBM

Inventor： ODAOHARA SHIGEFUMI ,  NAITO ZAISEI

IPC: G06F1/26 ,  G02F1/133 ,  G06F1/04 ,  G06F1/32 ,  G09G3/20 ,  G09G3/36

Abstract: PROBLEM TO BE SOLVED: To suppress power consumption of a computer (PC) within AC power supply adapter capacity. SOLUTION: The power consumption of a PC provided with a base load consisting of plural components and a CPU including operation modes of a slot ring and clock down is controlled. The actual power consumption 103 of the CPU in a certain operation mode fluctuates relatively vehemently in the maximum power consumption range of the CPU. The fluctuation of the actual power consumption of the base load is moderate. The predictive maximum power consumption Pmax of the PC is obtained from the actual power consumption of the base load and the maximum of power consumption in the current operation mode of the CPU. Reference powers 121, 123 and 125 are set as objects to be compared with the Pmax to change from a certain operation mode to another operation mode. When the Pmax exceeds the reference power, the operation mode of the CPU is changed to control the actual power consumption of the PC.