Provided us a visual cortical circuit apparatus comprising: a current mirror unit which uses a transistor as a current source to generate a current having the same size as that of a reaction; a transconductance unit which takes, as an input, the current generated by the current mirror unit and outputs a voltage using a transconductance; and a buffer unit for converting the voltage output from the transconductance unit into a current and buffering the current.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A visual cortical circuit apparatus for constructing a circuit for implementing a visual cortex response to stimuli over the period of neuron response time in a form of a voltage and outputting a voltage equivalent to the voltage, comprising: a current mirror unit for using a transistor as a current source to generate a current of the same magnitude as the response; a transconductance unit for receiving a current generated by the current mirror unit as an input and outputting a voltage using transconductance; and a buffer unit for converting a voltage output by the transconductance unit into a current and buffering the current. 2. The visual cortical circuit apparatus of claim 1, further comprising a bipolar switch unit, wherein any one of outputs from the buffer unit is switched on if a membrane potential proceeds across a neuron so that the neuron becomes activated, and switched off if a membrane potential proceeds across a neuron so that the neuron becomes deactivated. 3. The visual cortical circuit apparatus of claim 1, further comprising a bias unit for applying a bias voltage so that the current mirror unit can remain in an operational state when the response is smaller in magnitude than a predetermined threshold value. 4. The visual cortical circuit apparatus of claim 3, wherein the bias unit is structured in symmetry and an output voltage generated by biasing is removed in the buffer unit. 5. The visual cortical circuit apparatus of claim 1, wherein the transconductance unit is an equivalent circuit of a differential transconductance amplifier. 6. A visual cortical imitation system using a visual cortical circuit apparatus, comprising: a bias unit for applying a bias voltage to maintain a reference operating point when a response output from the visual cortical circuit apparatus over the period of neuron response time is smaller in magnitude than a predetermined threshold value; a current mirror unit for using a transistor as a current source to generate a current having a same magnitude as an current inputted by the bias unit; a transconductance unit for receiving, as an input, a current generated by the current mirror unit and outputting a voltage using transconductance; a buffer unit for converting a voltage output by the transconductance unit into a current and buffering the current; and a bipolar switching unit, wherein any one of outputs from the buffer unit is switched on if a membrane potential proceeds across a neuron so that the neuron becomes activated, and switched off if a membrane potential proceeds across a neuron so that the neuron becomes deactivated. 7. A visual cortical circuit apparatus for implementing visual cortex's response to stimuli over the period of neuron response time in a form of a voltage and outputting a voltage equivalent to the voltage, comprising: a transconductance unit for taking, as an input, a value with an offset applied to distinguish between a background of an image or picture and an object to be searched for; an externally-controlled voltage application unit for setting the offset; and a buffer unit for applying a weight by amplifying an input voltage or input current for a same frame as the pattern of the object. 8. The visual cortical circuit apparatus of claim 7, wherein, for the pixel values of the image or picture, the transconductance unit applies a positive offset to the background and a negative offset to the object. 9. The visual cortical circuit apparatus of claim 7, further comprising a conversion unit for converting an input image aimed at searching for an object in the image and picture into a black-and-white image, before the offset is applied to the image or picture. 10. The visual cortical circuit apparatus of claim 7, further comprising a switched capacitor unit for storing an output current from the buffer unit in the form of an electric charge. 11. The visual cortical circuit apparatus of claim 10, wherein the switched capacitor unit comprises: a first switch for making an output current from the buffer unit flow for a certain period of time; a capacitor, connected in parallel with the first switch, for storing an output current from the buffer unit in a form of an electric charge; and a second switch, connected in parallel with the capacitor and connected in series with the first switch. 12. The visual cortical circuit apparatus of claim 11, wherein the switched capacitor unit further comprises a third switch for discharging residual charge of the capacitor before the first switch is electrically connected. 13. The visual cortical circuit apparatus of claim 7, further comprising: an integrated capacitor, wherein if at least one of the visual cortical circuit apparatuses is equipped and the at least one visual cortical circuit apparatus is connected in parallel, the integrated capacitor is connected in parallel with the at least one visual cortical circuit apparatus; and an integrated switch for discharging residual charge of the integrated capacitor before the at least one visual cortical circuit apparatus is electrically connected. 14. The visual cortical circuit apparatus of claim 7, wherein if the pixels of the image or picture are brighter than a predetermined luminance value, the buffer unit applies the offset to the image or picture. 15. The visual cortical circuit apparatus of claim 7, further comprising: a search unit for singling out and detecting an object in the image with the offset or weight applied; and a rescue information processing unit for generating rescue information by processing an object detected by the search unit into a graphical or textual form. 16. The visual cortical circuit apparatus of claim 15, wherein if the object is a person, the rescue information processing unit processes the object into a combination of graphics representing the person's body parts. 17. The visual cortical circuit apparatus of claim 15, wherein if the object is at least one, the visual cortical circuit apparatus generates rescue information for each object. 18. The visual cortical circuit apparatus of claim 7, wherein the transconductance unit is an equivalent circuit of a differential transconductance amplifier. 19. An object search system using a visual cortical circuit apparatus, comprising: a conversion unit for converting an input image into a black-and-white image as a pre-treatment process to search for an object from an image or picture; a transconductance unit for taking, as an input, a value with an offset applied to distinguish between the background of an image or picture and an object to be searched for; an externally-controlled voltage application unit for setting the offset; a buffer unit for applying a weight by amplifying an input voltage or input current for the same frame as the pattern of the object; and a search unit for singling out and detecting an object from an image with the offset and the weight applied.