Motor driving system for remote controlled mobile toys

• US 4,207,502 A
• Filed: 12/27/1977
• Issued: 06/10/1980
• Est. Priority Date: 12/27/1977
• Status: Expired due to Term

• Current Assignee: Asahi Limited (Sharp World Holdings Limited)
• Original Assignee: Asahi Limited (Sharp World Holdings Limited)
• Inventors: Omura, Yoshihiko
• Primary Examiner(s): Dobeck, B.
• Application Number:
  US05/864,805
• Time in Patent Office: 896 Days
• Field of Search: 318/16, 318/587, 318/78, 318/318, 318/110, 46/254, 46/251, 46/253, 46/248, 46/249
• US Class Current: 318/16
• CPC Class Codes: A63H 30/04 using wireless transmission
• CPC Class Codes: G05D 1/0033 by having the operator tracking the vehicle either by direct line of sight or via one or more cameras located remotely from the vehicle

Abstract

Separate high low pass of frequency filters are employed in a circuit to control the input response signal to a pair of motors for operating a mobile toy in response to a frequency modulated radio wave transmitted by a transmitting unit.

Claims

1. Apparatus responsive to a frequency modulated radio wave signal comprising:

(a) circuit means for detecting a frequency modulated signal;

(b) circuit means for generating a frequency signal responsive to said frequency modulated signal detected;

(c) at least first and second frequency filter means for receiving the output of the frequency signal, the output signal of said first filter increases when the input frequency increases and decreases when said frequency decreases the output of said second filter decreases when input frequency increases and increases when said frequency decreases, said first filter having at least a portion of its frequency band overlapping the frequency band of said second filter;

(d) and at least first and second motors, the speed of said first motor responsive to the output signal of said first filter and the speed of said second motor being responsive to the output of said second motor.

2. The apparatus of claim 1 in which said first motor is mechanically coupled to one wheel of a toy vehicle and the second motor is mechanically coupled to a second wheel of a toy vehicle.

3. The apparatus of claim 2 in which said first and second wheels are located on opposite sides of the first of a toy vehicle.

4. A system for generating a remotely controlled vehicle comprising:

(a) means for transmitting a frequency modulated signal;

(b) means for varying the frequency modulated signal;

(c) means for detecting said frequency modulated signal and generating a frequency signal responsive to the detected frequency modulated signal;

(d) first and second frequency filters, said first frequency filter being a high-pass frequency filter and said second frequency filter being a low-pass filter;

the generated frequency signal being an input to the high-pass filter and the low pass filter, the output signal of the low-pass filter controlling the speed of a first motor and the output signal of the high-pass filter controlling the speed of a second motor, said high pass filter having at least a portion of its frequency band the same as at least a portion of the frequency band of the low pass filter.