Remote data read system

United States Patent [19]

Hisanaga et al.

[54] REMOTE DATA READ SYSTEM

[75] Inventors: Tetsuo Hisanaga; Tetsuya Kajita, both of Kanagawa, Japan

[73] Assignee: Yamatake-Honeywell Co., Ltd., Tokyo, Japan

[21] Appl. No.: 956,797

[22] Filed: Oct. 5,1992

[30] Foreign Application Priority Data

Oct. 7, 1991 [JP] Japan 3-285465

[51] Int. CI.6 G08B 23/00; G08C 15/06

[52] U.S. CI 340/870.02; 340/870.08

[58] Field of Search 340/870.02, 870.03,

340/870.08, 870.11, 870.31, 870.32, 825.31, 825.34, 825.52, 825.54, 825.44, 539; 455/254, 63, 127, 95; 324/142

[56] References Cited

U.S. PATENT DOCUMENTS

3,656,112 4/1972 Paull 340/870.02

4,463,354 7/1984 Sears 340/870.02

4,758,836 7/1988 Scuilli 340/870.02

4,782,341 11/1988 Gray 340/870.02

5,252,967 10/1993 Brennan et al 340/870.02

5,270,704 12/1993 Sosa Quintana et al 340/870.02

5,278,551 1/1994 Wakatsuki et al 340/870.02

5,289,459 2/1994 Brownlie 455/127

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US005485150A [ii] Patent Number: 5,485,150 [45] Date of Patent: Jan. 16, 1996

FOREIGN PATENT DOCUMENTS

0460734 12/1991 European Pat. Off. G01R 21/133

2138609 10/1984 United Kingdom G01F 15/06

2222898 3/1990 United Kingdom G06F 15/22

2230629 10/1990 United Kingdom G06M 1/272

Primary Examiner—Michael T. Razavi
Assistant Examiner—Tuan V. Ho

Attorney, Agent, or Firm—Blakely, Sokoloff, Taylor & Zafman

[57] ABSTRACT

A remote data read system includes a plurality of accumulators including first transmission/reception sections of an electromagnetic induction type, and a handy terminal including a second transmission/reception section of an electromagnetic induction type. The plurality of accumulators accumulate accumulation values representing amounts of consumed power, gas, tap water, or the like, and output accumulated value data in response to data request signals transmitted thereto. The first transmission/reception sections receive external data request signals, and output accumulation value data in response to the data request signal. The handy terminal outputs the data request signal to read an accumulation value from the accumulator and displays input accumulation value data. The second transmission/reception section outputs the data request signal to the first transmission/reception section, and receives the accumulation value data output from the first transmission/reception section.

4 Claims, 4 Drawing Sheets