Discrete object searching apparatus for search of discrete files and the like

• US 5,063,380 A
• Filed: 10/04/1990
• Issued: 11/05/1991
• Est. Priority Date: 02/24/1988
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Asahi Denshi Kenkyujyo
• Original Assignee: Kabushiki Kaisha Asahi Denshi Kenkyujyo
• Inventors: Wakura, Shinji
• Primary Examiner(s): Weldon, Ulysses
• Application Number:
  US07/593,501
• Time in Patent Office: 397 Days
• Field of Search: 340/825.35, 340/825.36, 340/825.39, 340/825.4, 340/825.49, 340/825.54, 340/505, 340/568, 340/571, 340/572, 340/825.14, 250/200, 250/201, 250/214 B, 455/603, 455/619, 380/10
• US Class Current: 340/539.13
• CPC Class Codes: G01S 17/74 Systems using reradiation of electromagnetic waves other than radio waves, e.g. IFF, i.e. identification of friend or foe
• CPC Class Codes: G01S 7/4816 of receivers alone

Abstract

An apparatus is disclosed which enables efficient search of a particular file out of a multiplicity of files arranged on shelves, such that a display light, such as light-emitting diode, lights to externally indicate the location of the file only when a signal receiver attached to the file receives a predetermined signal from a signal transmitter connected to a computer. More particularly, a discrete object searching apparatus is provided for searching and locating discrete files wherein the signal transmitter and the signal receiver are, respectively, an infrared signal transmitter and an infrared signal receiver. An optical receptor portion of the receiver is provided with a means for cutting off visible light to eliminate wasteful use of the battery of the receiver. The receiver has no amplifier portion, the receptor portion being thus directly connected to a data processing portion in the receiver. The apparatus can perform not only search of a discrete file, but also search of a group of files. Further, the apparatus permits two-way communication so that the location of the file can be displayed on the display screen of the computer, whcih facilitates easy management of file inventory.

Claims

1. A discrete object search apparatus for searching and locating discrete objects comprising:

at least one cabinet having a plurality of shelves therein, each shelf having a groove defined therein with a transparent plate covering each of the grooves;

a plurality of infrared signal transmitters on each shelf for transmitting signals corresponding to the discrete objects being searched, each of the grooves having a plurality of said transmitters disposed therein along a longitudinal length thereof, adjacent transmitters being generally equidistantly spaced from one another, each of said discrete objects having a unique signal associated therewith;

infrared receivers individually mounted to each of the objects, each of said infrared receivers being associated with one separate, single one of said infrared transmitters, each of said infrared receivers having a receptor, a data processing portion and an external indicator, said receptor portion and said data processing portion being directly connected to each other without an amplifier portion therebetween and said data processing portion being operatively connected to the external indicator, said receptor portion receives infrared signals from the one infrared signal transmitter associated therewith, the infrared signals being transmitted from the infrared transmitter through a transparent plate covering the groove and to the receptor portion of the receiver, said data processing portion being actuated when the signal associated with the discrete object in which the infrared receiver is mounted is received, said external indicator thereafter being actuated to indicate correspondence between said signal transmitted by the infrared signal transmitters and said receivers to show a location of a desired one of the discrete objects, said infrared transmitters being located in a position to enable the infrared transmitters to transmit to the receptor portion a necessary amount of infrared light for actuating the data processing portion, and the receptor portion of each infrared receiver being in close proximity to the infrared signal transmitter associated therewith; and

means for cutting off visible light to the receptor portion to thereby prevent actuation of the data processing portion by visible light, said means for cutting off visible light permitting infrared light to reach the receptor portion.

2. The discrete object searching apparatus for searching and locating discrete objects according to claim 1, wherein said means for cutting off visible light comprises a paint coat on an optic face of the receptor portion.

3. The discrete object searching apparatus for searching and locating discrete objects according to claim 2, wherein said paint is a red paint.

4. The discrete object searching apparatus for searching and locating discrete objects according to claim 1, wherein the object is selected from the group consisting of book ends, records and medical charts.

5. The discrete object searching apparatus for searching and locating discrete objects according to claim 1, further comprising a multiplicity of signal receivers for each of the shelves, and each of said files as objects for search further having transmitters for transmitting signals to the receivers mounted on the shelves.

6. The discrete object searching apparatus for searching and locating discrete objects according to claim 1, wherein the objects for search are present in a plurality of groups and further including group indicators for each of the groups.

7. The discrete object searching apparatus for searching and locating discrete objects according to claim 6, wherein the at least one cabinet is a plurality of cabinets and wherein said objects for search are files and a multiplicity of files are housed in the plurality of cabinets so that the files are present in groups in individual cabinets, each of the cabinets being equipped with one of the group indicators.

8. The discrete object searching apparatus for searching and locating objects according to claim 6, wherein said group indicator is an electric lamp.

9. The discrete object searching apparatus for searching and locating objects according to claim 7, wherein said group indicator is an electric lamp.

10. The discrete object searching apparatus for searching and locating discrete objects according to claim 1, wherein the external indicator is a light emitting diode.

11. The discrete object searching apparatus for searching and locating discrete objects according to claim 1, wherein each discrete object has one of said infrared signal transmitters positioned less than 5 cm from the receptor portion thereof.

12. The discrete object searching apparatus for searching and locating discrete objects according to claim 2, further comprising a multiplicity of signal receivers for each of the shelves, and each of said files as objects for search further having transmitters for transmitting signals to the receivers mounted on the shelves.

13. The discrete object searching apparatus for searching and locating discrete objects according to claim 3, further comprising a multiplicity of signal receivers for each of the shelves, and each of said files as objects for search further having transmitters for transmitting signals to the receivers mounted on the shelves.

14. The discrete object searching apparatus for searching and locating discrete objects according to claim 1, wherein the receptors of each of the infrared receivers are located on a bottom side of the object, the receptor being located above the associated infrared signal transmitter when the object is placed on one of the shelves of the at least one cabinet.

15. The discrete object searching apparatus for searching and locating discrete objects according to claim 14, wherein the receptor, data processing portion and external indicator of each of the infrared receivers are located on a front portion of the object.