Transmitting power control circuit

• US 5,199,110 A
• Filed: 08/28/1990
• Issued: 03/30/1993
• Est. Priority Date: 06/08/1990
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Adachi, Keigo
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): BELZER, CHRISTINE
• Application Number:
  US07/573,966
• Time in Patent Office: 945 Days
• Field of Search: 455/95, 455/126, 455/127, 455/115, 455/234, 455/116, 379/58
• US Class Current: 455/126
• CPC Class Codes: H03G 3/3042 in modulators, frequency-changers, transmitters or power amplifiers transmission power control in bidirectional transmission systems H04W52/04
• CPC Class Codes: H04B 2001/0416 having gain or transmission power control

Abstract

A transmitting power control circuit comprising a control unit which recognizes the period of transmitting the voice signal and issues instruction to the reference signal generating unit to output a lower output reference value during such period and a reference value generating unit which has, as the one output reference value, an output reference value corresponding to a lower output level in the higher power level of the adjacent power levels and an output reference value corresponding to a higher output level in the lower power level and prepares, as a result of it, a less number of output reference values and thereby outputs the output reference value during transmission of data signal in each power level and the output reference value during transmission of voice signal.

Claims

1. In a transmitting power control circuit of the type having an output level detector which detects transmitting output level and outputs a detected level signal depending on such transmitting output level, and a transmitting output control unit which controls said transmitting output level to a predetermined level in a specified range on the basis of said detected level signal and an output reference value specifying said predetermined level, a transmitting power control circuit comprising:

a reference value generating unit which generates output reference values corresponding to different higher and lower transmitting output levels within said specified range, and

a control unit connected to said reference value generating unit for applying to said reference value generating unit an instruction to output the output reference value corresponding to the higher transmitting output level in the case where said transmitting signal is data signal, and an instruction to output the output reference value corresponding to the lower transmitting output level in the case where said transmitting signal is voice signal.

2. In a transmitting power control circuit of the type having an output level detector which detects transmitting output level of a transmitting output unit within a specified range among a plurality of power levels and outputs a signal level depending on such output level, and

a transmitting output control unit which controls said output level to the predetermined power level value within the specified range on the basis of said detected level signal and an output reference value specifying said predetermined power level value, a transmitting power control circuit comprising:

a reference value generating unit which generates output reference values corresponding to higher and lower transmitting output levels within each specified range of a plurality of transmitting output power levels, said lower level of the next larger range of adjacent power levels overlapping the higher level of the next smaller range, and

a control unit connected to said reference value generating unit for applying to said reference value generating unit an instruction to output the output reference value corresponding to the higher transmitting output level in the case where said transmitting signal is data signal or an instruction to output the output reference value corresponding to the lower output level in the case where said transmitted signal is voice signal.