Radio telephone apparatus and method for controlling amount of electric current consumption thereof

• US 20060025170A1
• Filed: 08/01/2005
• Published: 02/02/2006
• Est. Priority Date: 08/02/2004
• Status: Active Grant

• Current Assignee: Intertechnology Global LLC (IP Edge LLC)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Kataoka, Hiroshi, Otsubo, Katsuyuki, Hayashida, Koji
• Granted Patent: US 7,529,567 B2
• Time in Patent Office: Days
• US Class Current: 455/550.100
• CPC Class Codes: H04B 1/1615 Switching on; Switching off, e.g. remotely battery saving circuits associated with selective call operation H04W52/00; details of power consumption reduction in a PLL, H03L7/0802, H03L7/14, H03L2207/08, H03L2207/18; muting amplifiers by gain control see H03G3/34
• CPC Class Codes: H04M 1/72478 for hearing-impaired users
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A radio telephone apparatus includes a transmission section that transmits a radio wave, a consumption section that consumes an amount of an electric current equal to that consumed by the transmission section, and a control section that controls activations of the transmission section and the consumption section. The control section activates the consumption section to consume the amount of the electric current during the period when the transmission section is not activated.

Claims

1. A radio telephone apparatus, comprising:

a transmission section that transmits a radio wave;

a consumption section that consumes an amount of an electric current equal to that consumed by the transmission section; and

a control section that controls activations of the transmission section and the consumption section,

wherein the control section activates the consumption section to consume the electric current during the period when the transmission section is not activated.

2. The radio telephone apparatus as set forth in claim 1, wherein the control section generates a transmission section enable signal for controlling an activation and a halt of the transmission section and a consumption section enable signal for controlling an activation and a halt of the consumption section.

3. The radio telephone apparatus as set forth in claim 2, wherein the control section delays a timing of transmitting the consumption section enable signal for halting the consumption section with respect to a timing of transmitting the transmission section enable signal for activating the transmission section when the control section activates the transition section so that a change of a sum of amounts of electric currents consumed by the transmission section and the consumption section is reduced during a transition from a halting state of the transition section to an activating state of the transition section.

4. The radio telephone apparatus as set forth in claim 2, wherein the control section delays a timing of transmitting the consumption section enable signal for activating the consumption section with respect to a timing of transmitting the transmission section enable signal for halting the transmission section when the control section halts the transition section so that a change of a sum of amounts of electric currents consumed by the transmission section and the consumption section is reduced during a transition from an activate state of the transition section to a halting state of the transition section.

5. The radio telephone apparatus as set forth in claim 1, wherein the consumption section includes:

a receiving section for receiving a radio wave; and

a first load circuit for consuming an amount of a difference electric current between the amount of the electric current consumed by the transmission section and the amount of the electric current consumed by the receiving section; and

wherein the control section activates the receiving section and the first load circuit during the period when the transmission section is not activated.

6. The radio telephone apparatus as set forth in claim 5, wherein the control section generates a transmission section enable signal for controlling an activation and a halt of the transmission section, and a consumption section enable signal for controlling an activation and a halt of the consumption section;

and

wherein the consumption section enable signal includes a receiving

section enable signal for controlling an activation and a halt of the receiving section and a first load enable signal for controlling an activation and a halt of the first load circuit.

7. The radio telephone apparatus as set forth in claim 1 wherein the first load circuit includes:

a resistor for consuming an electric current; and

a switching element for feeding the electric current to the resistor.

8. The radio telephone apparatus as set forth in claim 1 wherein the consumption section includes:

a receiving section for receiving a radio wave;

a second load circuit for consuming an amount of an electric current equal to that consumed by the transmission section; and

a third load circuit for consuming an amount of a difference electric current between the amount of the electric current consumed by the transmission section and the amount of the electric current consumed by the receiving section; and

wherein the control section activates the second load circuit or both of the receiving section and the third load circuit to consume the amount of the electric current during the period when the transmission section is not activated.

9. The radio telephone apparatus as set forth in claim 1, wherein the consumption section and the transmission section are mounted on a substrate;

and

wherein the consumption section is arranged in proximity to the transmission section on the substrate.

10. A method for controlling an amount of electric current consumed by a radio telephone apparatus that includes a transmission section and a consumption section, the method comprising:

activating the transmission section for transmitting a radio wave, and

activating the consumption section to consume an amount of the electric current during the period when the transmission section is not activated,

wherein the amount of the electric current consumed in the consumption section is equal to an amount of the electric current consumed in the transmission section.

11. The method as set forth in claim 10, further comprising:

generating a transmission section enable signal for controlling an activation and a halt of the transmission section; and

generating a consumption section enable signal for controlling an activation and a halt of the consumption section.

12. The method as set forth in claim 11, further comprising:

delaying a timing of transmitting the consumption section enable signal for halting the consumption section with respect to a timing of transmitting the transmission section enable signal for activating the transmission section when the control section activates the transition section so that a change of a sum of amounts of electric currents consumed by the transmission section and the consumption section is reduced during a transition from a halting state of the transition section to an activating state of the transition section.

13. The method as set forth in claim 11, further comprising:

delaying a timing of transmitting the consumption section enable signal for activating the consumption section with respect to a timing of transmitting the transmission section enable signal for halting the transmission section when the control section halts the transition section so that a change of a sum of amounts of electric currents consumed by the transmission section and the consumption section is reduced during a transition from an activate state of the transition section to a halting state of the transition section.