Radio-frequency identification (rfid) capacitance liquid measurement tag system
US-2024311609-A1 · Sep 19, 2024 · US
RFID transponder
US9436899B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9436899-B2 |
| Application number | US-91148906-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 4, 2006 |
| Priority date | Apr 15, 2005 |
| Publication date | Sep 6, 2016 |
| Grant date | Sep 6, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An integrated circuit ( 1 a ) for a transponder ( 1 ), wherein said integrated circuit ( 1 a ) is switchable between a TTF (transponder talks first) and an RTF (reader talks first)-mode within a switching timeframe (TF 2 ), wherein the position of the switching timeframe (TF 2 ) is shif table in relation to a timeframe (TF 1 ) allocated to the TTF-mode. In a preferred embodiment, the switching timeframe (TF 2 ) is before a timeframe (TF 1 ) allocated to the TTF-mode by default. After initialization of the transponder ( 1 ), the switching timeframe (TF 2 ) is switched to a position after the timeframe.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of initializing a transponder, the transponder being switchable between a TTF mode and an RTF mode within a switching timeframe, the method comprising: shifting a position of the switching timeframe from a first position to a second position relative to a timeframe allocated to the TTF mode, wherein the second position is different from the first position and at least one predefined condition results in shifting of the switching timeframe. 2. The method as claimed in claim 1 , further comprising: shifting the position of the switching timeframe from a position after the timeframe allocated to the TTF mode to a position before the timeframe allocated to the TTF mode. 3. The method as claimed in claim 1 , further comprising: shifting the position of the switching timeframe from a position before the timeframe allocated to the TTF mode to a position after the timeframe allocated to the TTF mode. 4. The method as claimed in claim 1 , wherein a default position of the switching timeframe is before the timeframe allocated to the TTF mode. 5. The method of claim 1 , wherein the at least one predefined condition comprises exceeding a number of entries within a communication range of a transponder. 6. The method of claim 1 , wherein the at least one predefined condition comprises a first writing operation.
Assignees
Inventors
Classifications
interrogator driven, i.e. synchronous · CPC title
using antenna selection (H04B7/0868 takes precedence; antenna beam directivity switching H01Q3/24) · CPC title
- G06K19/0723Primary
the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs · CPC title
Round trip delays · CPC title
General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer · CPC title
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- What does patent US9436899B2 cover?
- An integrated circuit ( 1 a ) for a transponder ( 1 ), wherein said integrated circuit ( 1 a ) is switchable between a TTF (transponder talks first) and an RTF (reader talks first)-mode within a switching timeframe (TF 2 ), wherein the position of the switching timeframe (TF 2 ) is shif table in relation to a timeframe (TF 1 ) allocated to the TTF-mode. In a preferred embodiment, the switch…
- Who is the assignee on this patent?
- Haar Helmut, Bischof Kurt, Scharke Heiko, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G06K19/0723. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 06 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).