초록 ▼

A toy having an optically actuated sound generator includes first and second phototransistors coupled in series for creating a substantially binary output voltage based on the relative light intensities striking such phototransistors. A Schmitt-trigger circuit receives the binary output voltage and

A toy having an optically actuated sound generator includes first and second phototransistors coupled in series for creating a substantially binary output voltage based on the relative light intensities striking such phototransistors. A Schmitt-trigger circuit receives the binary output voltage and eliminates therefrom light-flicker components resulting from fluorescent lighting. Additional circuitry creates an enabling pulse at each transition of the Schmitt-trigger output signal, which enabling signal enables dual oscillator circuits. The dual oscillator output signals are gated together to drive a speaker for creating audible signals and to activate a light emitting diode. The electronic circuitry and speaker are housed in a baffle through which the phototransistors and light emitting diode protrude for communicating with a face portion of the toy.

대표청구항 ▼

A toy doll having a face portion and generating audible and visual signals in response to variations in light impinging on said face portion, comprising in combination: (a) optical sensor means disposed within the face portion of said toy doll for creating a voltage responsive to light received by s

A toy doll having a face portion and generating audible and visual signals in response to variations in light impinging on said face portion, comprising in combination: (a) optical sensor means disposed within the face portion of said toy doll for creating a voltage responsive to light received by said face portion; (b) detecting means coupled to said optical sensor means for detecting a change in said light responsive voltage and generating a trigger pulse in response thereto; (c) an electrical circuit coupled to said detecting means and responsive to said trigger pulse for generating audio signals in response thereto; (d) a speaker coupled to said electrical circuit for receiving said audio signals and providing audible signals in response thereto; and (e) a light emitting device communicating with the face portion of said toy doll and coupled to said electrical circuit, said light-emitting device providing visual signals from the face portion of said toy doll generally corresponding to said audible signals provided by said speaker.