Method of and apparatus for displaying temperature on a radio telephone

• US 5,603,101 A
• Filed: 12/22/1994
• Issued: 02/11/1997
• Est. Priority Date: 12/30/1993
• Status: Expired due to Term

• Current Assignee: Nonghyup Bank
• Original Assignee: Hyundai Electronics Industries Co. Ltd. (SK Hynix Inc.)
• Inventors: Choi, Jin-Gyu
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): TO, DORIS HA
• Application Number:
  US08/361,983
• Time in Patent Office: 782 Days
• Field of Search: 455/89, 455/90, 455/38.4, 455/145, 455/344, 455/346, 455/347, 455/351, 455/154.1, 455/158.4, 455/73, 455/84, 379/58, 379/61, 379/428, 379/433, 379/434
• US Class Current: 455/566
• CPC Class Codes: G01K 1/024 for remote indication
• CPC Class Codes: H04B 1/38 Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
• CPC Class Codes: H04M 1/72403 with means for local support of applications that increase the functionality
• 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

A method of and an apparatus for displaying temperature on a radio telephone. The temperature apparatus includes a key pad for producing a temperature mode or a speech mode, a device for measuring current room or environment temperature, analog/digital converting device for converting current room or environment temperature into a digital value, and a microcomputer for storing the digital temperature value in a memory of the radio telephone. The method includes the steps of a) using key for determining whether a temperature mode is selected, b) reading current environment temperature through the temperature measuring device, and displaying the measured current temperature on a liquid crystal display for a predetermined time, c) stopping the temperature mode, and converting the temperature mode into a speech mode. The liquid crystal display and driving device for driving the liquid crystal display of the radio telephone is utilized for optionally displaying temperature or telephone numbers of transmitters and receivers, which is more cost effective. In addition, the temperature display apparatus of the present invention may be applied to a variety of microcomputer-bases systems, for example, computers or copying machines.

Claims

1. A method of displaying temperature on a radio telephone, the radio telephone comprising a key pad for selecting temperature, speech mode, or other various functions, means for measuring current environment or room temperature for producing an electrical signal corresponding to said environment or room temperature and an liquid crystal display for displaying said current environment or room temperature, the method including the steps of:

a) using said key pad for determining whether a temperature mode is selected;

b) when said temperature mode has been selected in step (a), reading said current environment or room temperature through said temperature measuring means, and displaying said measured current temperature on said liquid crystal display for a predetermined time; and

c) after said predetermined time has lapsed, stopping said temperature mode, and converting said temperature mode into a speech mode.

2. A method according to claim 1, wherein said predetermined time is 120 sec.

3. An apparatus for displaying temperature for use in a radio telephone, the radio telephone comprising a memory and liquid crystal display, said temperature display apparatus comprising:

a key pad for selecting a temperature mode or a speech mode;

means for measuring current room or environment temperature;

analog/digital converting means for sampling said current room or environment temperature measured by said temperature measuring means, and converting said sampled current room or environment temperature into a digital value; and

a microcomputer for reading said digital temperature value obtained by said analog/digital converting means, depending on said temperature mode selected via said key pad, for storing said digital temperature value in said memory, for displaying said current room or environment temperature on said liquid crystal display, and for controlling overall operation of said radio telephone when said speech mode is selected.