JP2000123124A5

JP2000123124A5 -

Info

Publication number: JP2000123124A5
Application number: JP1998293700A
Authority: JP
Filing date: 1998-10-15
Publication date: 2005-07-21
Anticipated expiration: 2018-10-15

Description

【０００８】
【課題を解決するための手段】
請求項１記載の発明は、ＩＤタグとの間で電波信号を送受信するための送信アンテナおよび受信アンテナを備えたＩＤタグ用手持式リーダライタにおいて、前記送信アンテナを径方向に互いに近接して平行に並べられた同一形状、同一巻数の第１および第２のコイルにより構成し、送信時に前記第１および第２のコイルに電流を互に同一方向となるように流す場合と互に逆方向となるように流す場合とに切り換え可能に構成したことを特徴とするものである。 0008
[Means for solving problems]
The invention according to claim 1 is a handheld reader / writer for an ID tag provided with a transmitting antenna and a receiving antenna for transmitting and receiving radio waves to and from the ID tag, wherein the transmitting antennas are close to each other in the radial direction and parallel to each other. It is composed of the first and second coils of the same shape and the same number of turns arranged in the same direction, and the directions are opposite to those in the case where the current is passed through the first and second coils in the same direction at the time of transmission. It is characterized in that it is configured so that it can be switched between the case of flowing so as to be.

更に、請求項１記載の発明は、本体は手持ち部とこの手持ち部の一端側に設けられた頭部とを備え、前記送信アンテナは、前記頭部を上向きとしたとき、その頭部に左右に並ぶように設けられていることを特徴とするものである。第１および第２のコイルが上下に位置された状態で電波を放射することによって上記のように全部の皿と交信することができる。一方、本体の手持ち部を手に持って、テーブル上に積み上げられている多数の皿の中程に保持する場合、手持ち部を横にした状態のときが自然で持ち易い。そして、第１および第２のコイルを頭部を手持ち部の一端側に左右に並べて設けておくことにより、手持ち部を横にしたとき、第１および第２のコイルが上下に位置するようになるので、操作し易くなる。
Further, in the invention according to claim 1 , the main body includes a hand-held portion and a head provided on one end side of the hand-held portion, and the transmitting antenna is left and right on the head when the head is turned upward. It is characterized in that it is provided so as to line up with each other. By radiating radio waves with the first and second coils positioned up and down, it is possible to communicate with all the dishes as described above. On the other hand, when the hand-held part of the main body is held in the middle of a large number of dishes stacked on the table, it is natural and easy to hold the hand-held part when it is laid down. By arranging the heads of the first and second coils side by side on one end side of the hand-held portion, the first and second coils are positioned vertically when the hand-held portion is laid down. Therefore, it becomes easy to operate.

Claims

In an ID tag handheld reader / writer equipped with a transmission antenna and a reception antenna for transmitting and receiving radio signals to and from an ID tag,
The main body includes a hand-held part and a head provided on one end side of the hand-held part,
The transmitting antenna is composed of first and second coils having the same shape and the same number of turns arranged in parallel and close to each other in the radial direction. It is configured to be switchable between flowing in the opposite direction and flowing in the opposite direction,
Furthermore, the transmission antenna is provided so as to be arranged side by side on the head when the head is faced upward , the ID tag handheld reader / writer.

2. The ID tag handheld reader / writer according to claim 1, wherein the receiving antenna is disposed around the first and second coils .

A first switch for flowing current through the first and second coils in the same direction, and a second switch for flowing current through the first and second coils in opposite directions. The hand-held reader / writer for ID tags according to claim 1.

2. A switching means for automatically switching between a case where currents are passed through the first and second coils in the same direction and a case where currents are passed in opposite directions to each other. The handheld reader / writer for ID tags described.