Communication terminal apparatus

• US 7,774,021 B2
• Filed: 04/04/2006
• Issued: 08/10/2010
• Est. Priority Date: 11/09/2001
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Takizawa, Kazuyuki, Nishimoto, Junichi, Masuda, Kozo, Arai, Ikuya
• Primary Examiner(s): Appiah; Charles N
• Assistant Examiner(s): DOAN, KIET M
• Application Number:
  US11/396,506
• Publication Number:
  US 20060194613A1
• Time in Patent Office: 1,589 Days
• Field of Search: 455/566, 455/556.1, 349/143, 439/1, 348/14, 384/14, 710/313
• 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 including a first housing with a display unit for displaying an, and a second housing which is with connected to the first case and operates between an open state and a closing state, the apparatus comprising:

a transmitter/receiver which transmits or receives a signal including a voice signal or an image signal;

a first control circuit which is connected to the display unit through a first bus and processes voice communication processes; and

a second control circuit which is connected to the display unit through a second bus and processes expansion processes of compressed image data;

wherein the second control circuit controls the display unit when the second control circuit processes the expansion processes, and the first control circuit controls the display unit when the second control circuit does not process the expansion processes,

wherein the first bus and the second bus are serial buses.