Cellular phone capable of measuring temperature by IR means

• US 20050272468A1
• Filed: 06/03/2004
• Published: 12/08/2005
• Est. Priority Date: 06/03/2004
• Status: Active Grant

• Current Assignee: Inventec Appliances Corporation (Inventec Corporation)
• Original Assignee: Inventec Appliances Corporation (Inventec Corporation)
• Inventors: Zhen, Jing, Tsai, Tony, Ho, David, Zhu, Yi-Min
• Granted Patent: US 7,333,832 B2
• Time in Patent Office: Days
• US Class Current: 455/556.100
• CPC Class Codes: G01J 3/0264 Electrical interface; User interface
• CPC Class Codes: G01J 3/0283 using a charging unit
• CPC Class Codes: G01J 5/02 Constructional details
• CPC Class Codes: G01J 5/04 Casings
• CPC Class Codes: H04M 2250/12 including a sensor for measuring a physical value, e.g. temperature or motion telephones including GPS signal receivers H04M2250/10

Abstract

The present invention is to provide a cellular phone capable of measuring temperature including a liquid crystal display, a CPU and an IR temperature measurement means coupled to the CPU, wherein a first GPO pin and a second GPO pin of the CPU are adapted to control power supply of a power supply IC and start or stop of the IR temperature measurement means respectively, and in response to receiving a temperature measurement signal, the CPU performs a plurality of processing and conversion steps to show a corresponding temperature on the display.

Claims

1. A cellular phone capable of measuring temperature including;

a CPU,

IR temperature measurement means including a plurality of pins each coupled to a corresponding one of a plurality of pins of the CPU,

a power supply IC for supplying power to the IR temperature measurement means, and

an IR sensor,

wherein a first GPO pin and a second GPO pin of the CPU are adapted to control power supply of the power supply IC and start or stop of the IR temperature measurement means respectively, and in response to receiving a temperature measurement signal, the CPU enables the first GPO pin to be at a low level so that the power supply IC is able to supply power to the IR temperature measurement means; and

enables the second GPO pin to be at a low level after a predetermined period of time has lapsed so that the IR temperature measurement means is able to send measured temperature data to the CPU via an I2C thereof.

2. The cellular phone of claim 1, wherein the IR temperature measurement means comprises a data pin and a clock pin coupled to an I2C data pin and an I2C clock pin of the CPU respectively, the first GPO pin of the CPU is coupled to an enable pin of the power supply IC so that in an unused state with no temperature being measured, power supply to the IR temperature measurement means is cut so as to prolong an operating time of a battery in the cellular phone, and the second GPO pin of the CPU is coupled to an active pin of the IR temperature measurement means so as to control the start or the stop of the IR temperature measurement means.

3. The cellular phone of claim 1, wherein the IR temperature measurement means comprises an IR sensor and an ASIC for amplifying, correcting, compensating, and performing an A/D conversion with respect to analog data obtained by the IR sensor, and the processed data is sent to an I2C of a bus prior to output.

4. The cellular phone of claim 3, wherein the cellular phone further comprises a phone body including a display for showing data, a keypad, a microphone, a speaker, and an antenna, and the IR sensor is formed at one end of the cellular phone.

5. The cellular phone of claim 4, wherein the cellular phone is a hinge type of cellular phone.