Patents by Inventor Hendrik Van Zyl Smit
Hendrik Van Zyl Smit has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9607193Abstract: A method and an identification system used for communicating between a reader and a plurality of transponders are disclosed. The reader has a transmitter for transmitting a signal and each transponder includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader recognises a transponder signal from one of the transponders it immediately issues a mute instruction, muting all other active transponders and passing control to the said transponder, without the need for a specifically timed acknowledgement to the said controlling transponder. The reader may issue a single disable/wakeup instruction which disables the controlling transponder returning control to the reader and reactivated all muted (but not disabled) transponders.Type: GrantFiled: March 29, 2006Date of Patent: March 28, 2017Assignee: ZIH Corp.Inventors: Raymond Catherall Atkins, Mario Alphonso Marais, Hendrik Van Zyl Smit
-
Patent number: 8872631Abstract: A method and an identification system used for communicating between a reader and a plurality of transponders are disclosed. The reader has a transmitter for transmitting a signal and each transponder includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader recognizes a transponder signal from one of the transponders it immediately issues a mute instruction, muting all other active transponders and passing control to the said transponder, without the need for a specifically timed acknowledgement to the said controlling transponder. The reader may issue a single disable/wakeup instruction which disables the controlling transponder returning control to the reader and reactivated all muted (but not disabled) transponders.Type: GrantFiled: August 10, 2012Date of Patent: October 28, 2014Assignee: ZIH Corp.Inventors: Raymond Catherall Atkins, Mario Alphonso Marais, Hendrik Van Zyl Smit
-
Publication number: 20120306625Abstract: A method and an identification system used for communicating between a reader and a plurality of transponders are disclosed. The reader has a transmitter for transmitting a signal and each transponder includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader recognises a transponder signal from one of the transponders it immediately issues a mute instruction, muting all other active transponders and passing control to the said transponder, without the need for a specifically timed acknowledgement to the said controlling transponder. The reader may issue a single disable/wakeup instruction which disables the controlling transponder returning control to the reader and reactivated all muted (but not disabled) transponders.Type: ApplicationFiled: August 10, 2012Publication date: December 6, 2012Applicant: ZIH CORP.Inventors: Raymond Catherall Atkins, Mario Alphonso Marais, Hendrik Van Zyl Smit
-
Patent number: 7053755Abstract: A method and an identification system used for communicating between a reader and a plurality of transponders. The reader has a transmitter for transmitting a signal and each transponder includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader recognizes a transponder signal from one of the transponders it immediately issues a mute instruction, muting all other active transponders and passing control to the said transponder, without the need for a specifically timed acknowledgement to the said controlling transponder. The reader may issue a single disable/wakeup instruction which disables the controlling transponder returning control to the reader and reactivated all muted (but not disabled) transponders.Type: GrantFiled: August 7, 2003Date of Patent: May 30, 2006Assignee: Zih Corp.Inventors: Raymond Catherall Atkins, Mario Alphonso Marais, Hendrik Van Zyl Smit
-
Publication number: 20040185806Abstract: A transponder (10) includes an activation circuit (12) responsive to an activation signal and having a power output, a coding circuit (14) connected to the power output of the activation circuit to produce a code modulated response signal on receipt of the activation signal, and a response circuit (16) connected to the coding circuit. The response circuit (16) is configured to transmit the code modulated response signal, and is a ringing circuit.Type: ApplicationFiled: May 10, 2004Publication date: September 23, 2004Inventor: Hendrik Van Zyl Smit
-
Patent number: 6784787Abstract: A method and system for identifying a plurality of transponders in an interrogation involves transmitting an interrogation signal to the transponders and receiving, at a reader, response signals from the transponders. Each transponder period, and alters the maximum length of the waiting period during the interrogation process.Type: GrantFiled: May 15, 2000Date of Patent: August 31, 2004Assignee: BTG International LimitedInventors: Raymond Catherall Atkins, Mario Alphonso Marais, Hendrik Van Zyl Smit
-
Publication number: 20040046645Abstract: A method and an identification system for communicating between a reader (10) and a plurality of transponders (1,2,3) are disclosed. The reader (10) has a transmitter (11) for transmitting a signal and each transponder (1,2,3) includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader (10) recognises a transponder signal from one of the transponders (1) it immediately issues a mute instruction, muting all other active transponders (2,3) and passing control to the said transponder (1), without the need for a specifically timed acknowledgement to the said controlling transponder (1). The reader (10) may issue a single disable/wakeup instruction which disables the controlling transponder (1) returning control to the reader (10) and reactivated all muted (but not disabled) transponders.(2,3).Type: ApplicationFiled: August 7, 2003Publication date: March 11, 2004Applicant: BTG International LimitedInventors: Raymond Catherall Atkins, Mario Alphonso Marais, Hendrik Van Zyl Smit
-
Patent number: 6661336Abstract: A method and an identification system us for communicating between a reader and a plurality of transponders. The reader has a transmitter for transmitting a signal and each transponder includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader recognises a transponder signal from one of the transponders it immediately issues a mute instruction, muting all other active transponders and passing control to the said transponder, without the need for a specifically timed acknowledgement to the said controlling transponder. The reader may issue a single disable/wakeup instruction which disables the controlling transponder returning control to the reader and reactivated all muted (but not disabled) transponders.Type: GrantFiled: October 12, 1999Date of Patent: December 9, 2003Assignee: BTG International LimitedInventors: Raymond Catherall Atkins, Mario Alphonso Marais, Hendrik Van Zyl Smit