TRANSMITTER AND RECEIVER

• US 20130049481A1
• Filed: 03/29/2012
• Published: 02/28/2013
• Est. Priority Date: 08/26/2011
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: KUDO, Hiroki, Deguchi, Noritaka, Oodachi, Noriaki, Ogawa, Kenichirou, Shijo, Tetsu, Yamada, Akiko, Obayashi, Shuichi, Shoki, Hiroki
• Application Number:
  US13/434,398
• Publication Number:
  US 20130049481A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: G06K 19/077 Constructional details, e.g. mounting of circuits in the carrier
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

A transmitter transmits both an electric power signal and an information signal. The electric power signal includes a first frequency. The information signal includes a second frequency different from the first frequency.

Claims

1. A transmitter comprising:

a driver to generates a power signal including a first frequency for a wireless power transmission;

a communicator to generates an information signal including a second frequency different from the first frequency; and

a first coil to resonate at the first frequency and to transmit both the power signal and the information signal.

2. The transmitter of claim 1, further comprising:

a second coil electromagnetically-coupled with the first coil,

wherein the second frequency is either one of a neighborhood of a resonant frequency of the second coil or a frequency determined by the resonant frequency of the second coil.

3. The transmitter of claim 2, wherein

the second frequency is a frequency determined by either one of a path length of the second coil or an electrical length of the second coil.

4. The transmitter of claim 2, further comprising:

a third coil electromagnetically-coupled with the second coil,

wherein a resonant frequency of the third coil and the resonant frequency of the second coil are different, and

the communicator outputs the information signal to at least either one of the second coil or the third coil.

5. The transmitter of claim 1, further comprising:

a first controller to control a start of a power transmission by using an electric power amount received by a receiver side estimated by using a received power of an information signal at the communicator.

6. The transmitter of claim 1, further comprising:

a second controller to control a transmitting power of the information signal by using a reachable distance of an electric power transmitted via the first coil.

7. The transmitter of claim 1, further comprising:

a variable circuit to change a Q value of the first coil according to a priority of a wireless power transmission and a priority of a wireless communication via the first coil.

8. A receiver comprising:

a first coil to resonates at a first frequency and to receive both a power signal and a information signal, the power signal includes a first frequency and being for a wireless power transmission, the information signal includes a second frequency different from the first frequency;

a load to be provided with the power signal; and

a communicator to receive the information signal.