Communication terminal apparatus

• US 20030092467A1
• Filed: 11/08/2002
• Published: 05/15/2003
• Est. Priority Date: 11/09/2001
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Takizawa, Kazuyuki, Nishimoto, Junichi, Masuda, Kozo, Arai, Ikuya
• Granted Patent: US 7,058,426 B2
• Time in Patent Office: Days
• US Class Current: 455/556.1
• CPC Class Codes: G06F 3/1423 controlling a plurality of local displays, e.g. CRT and flat panel display
• CPC Class Codes: G09G 2330/022 in absence of operation, e.g. no data being entered during a predetermined time
• CPC Class Codes: H04M 1/0214 Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0245 using open/close detection
• CPC Class Codes: H04M 1/72403 with means for local support of applications that increase the functionality
• CPC Class Codes: H04M 1/72427 for supporting games or graphical animations
• CPC Class Codes: H04M 1/7243 with interactive means for internal management of messages
• CPC Class Codes: H04M 1/72442 for playing music files
• CPC Class Codes: H04M 2250/16 including more than one display unit
• CPC Class Codes: H04W 52/027 by controlling a display operation or backlight unit
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• CPC Class Codes: H04W 52/0296 switching to a backup power supply
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A communication terminal apparatus which improves the a quality of an additional function such as image processing, music reproduction etc. over repressing power consumption is provided. The communication terminal apparatus has a transmission and reception unit adapted to transmit or receive a signal including a voice signal or an image signal, a decode processing unit adapted to decode a received signal, a first control circuit for controlling the transmission and reception unit and the decode processing unit, a second control circuit for processing an image signal which is outputted from the decode processing unit, a first power supply unit adapted to supply electric power to the first control circuit, and a second power supply unit adapted to supply electric power to the second control circuit, and in case that the communication terminal apparatus is not operated for a given length of time, the second power supply unit reduces electric power to the second control circuit.

Claims

1. A communication terminal apparatus comprising:

a transmission and reception part which transmits or receives a signal including a voice signal or an image signal;

a decode processing part which decodes the signal received by the transmission and reception part;

a first control circuit which controls the transmission and reception part and the decode processing part;

a second control circuit which processes an image signal which is outputted from the decode processing part;

a first power supply part which supplies electric power to the first control circuit; and

a second power supply part which supplies electric power to the second control circuit.

2. The communication terminal apparatus according to claim 1, wherein when the communication terminal apparatus is not operated for more than a given length of time, the second power supply part reduces electric power to the second control circuit.

3. The communication terminal apparatus according to claim 1, wherein the communication terminal apparatus is a folding type apparatus and when the communication terminal apparatus is closed, the second power supply part reduces electric power to the second control circuit.

4. A communication terminal apparatus comprising:

a speaker which converts a received voice signal into voice;

a microphone which converts voice into a voice signal;

a code decode processing part which applies code decode processing to the voice signal;

a transmission and reception part which transmits and receives input and output signals of the code decode processing part;

a first control circuit which controls the code decode processing part and the transmission and reception part;

a memory which stores a program and data of the first control circuit;

a first display device which carries out display based upon an instruction of the first control circuit;

a second control circuit which carries out image processing; and

a second display device which carries out display based upon an instruction of the second control circuit.

5. The communication terminal apparatus according to claim 4, wherein the first display device carries out display mainly of a character or a graphic, and the second display device carries out display mainly of an image.

6. The communication terminal apparatus according to claim 4, wherein the second control circuit has a CPU portion and a peripheral function portion, and power supplies for the CPU portion and the peripheral function portion are controlled separately.

7. The communication terminal apparatus according to claim 6, wherein when the communication terminal apparatus is not operated for a given length of time, the power supply for the CPU portion is turned OFF, and the first control circuit controls the second display device through the peripheral function portion.

8. The communication terminal apparatus according to claim 7, wherein when the display is carried out on the second display device based upon control of the first control circuit, size of an image to be displayed or the number of colors to be displayed is limited.

9. The communication terminal apparatus according to claim 6, wherein the communication terminal apparatus has a battery, and in case that remaining amount of the battery becomes less than a certain given quantity, the power supply for the CPU portion of the second control circuit is turned OFF.

10. A communication terminal apparatus comprising:

a speaker for converting a received voice signal into voice;

a microphone for converting voice into a voice signal;

a code decode processing circuit for applying code decode processing to the voice signal in the speaker and the microphone;

a wireless circuit and an antenna for transmitting and receiving input and output signals of the code decode processing circuit in the air;

a first control circuit for controlling the wireless circuit and the code decode processing circuit;

a memory for storing a program and data of the control circuit;

a key which is operated by a user;

a first display device for carrying out display based upon an instruction of the first control circuit;

a second control circuit for carrying out image processing; and

a second display device for carrying out display based upon an instruction of the second control circuit,

wherein the number of signals of an interface of the first control circuit and the second control circuit is different from the number of signals of an interface of the second control circuit and the second display device.

11. The communication terminal apparatus according to claim 10, wherein the number of signals of an interface of the second control circuit and the second display device is different from the number of signals of an interface of the second control circuit and the first display device.