Electronic endoscope apparatus enlarging a still image
View Patent ↗When a first-stage operation or first operation of a freeze switch is performed, a still image is stored in image memory and is displayed on a monitor. When an electronic variable power switch is operated in this state, a still image electronically enlarged is formed on the basis of a signal of the above-described image memory. Then, when a second-stage operation or second operation of the freeze switch is performed, the above-described enlarged still image is recorded in a recording device. Owing to this, it is possible to display and record an arbitrary still image that is enlarged and is positioned on optimum conditions. Moreover, by single operation of an electronic variable power switch, an enlarged still image can be formed and can be also recorded simultaneously. Furthermore, even if continuous recording operation is prohibited, the next recording operation can be performed by operating the electronic variable power switch.
1. An electronic endoscope apparatus comprising:
an image signal processing circuit which forms a still image signal of an object from an output signal of an image pickup device in response to a freeze switch;
an image memory which stores the still image signal outputted from this image signal processing circuit; an electronic variable power circuit which reads the still image signal in the image memory on the basis of operation of an electronic variable power switch and forms a still image signal which is electronically enlarged;
a control circuit which performs control of displaying the still image to a display unit by the freeze switch,
wherein control of recording the still image in a recording device by the record trigger signal which occurs by the operation of a recording operation switch,
wherein control of operating the electronic variable power circuit is based on the electronic variable power switch,
wherein control of enlarging the still image which is stored to the image memory by the electronic variable power circuit and displaying this enlargement still image to the display unit when the electronic variable power switch is operated during the display of the still image;
wherein control is such that a record trigger signal, used for recording the enlargement still image in the recording device is made to be generated when the recording operation switch is operated during the display of the enlargement still image, generation of this record trigger signal is prohibited after this generation to then prevent repeated duplicated recording of the enlargement still images of the same magnification, and
wherein control is such that generation of the record trigger signal is made to be ready when the electronic variable power switch is operated after the generation of the record trigger signal is prohibited and the new enlargement still image is recorded in the recording device when a record trigger signal is generated on the basis of operation of the recording operation switch.
2. An electronic endoscope according to claim 1 :
wherein the control circuit which performs control of the image memory, and control of storing the still image signal into the image memory by a first-operation of a freeze switch and displaying the still image to a display unit, and control of enlarging the still image which is stored to the image memory by the electronic variable power circuit and displaying this enlargement still image to a display unit when an electronic variable power switch is operated during the display of the still image, and control of recording the enlargement still image in a recording device by a second-operation of the freeze switch.
3. An electronic endoscope according to claim 1 :
wherein the control circuit which performs control of the image memory, and control of storing the still image signal into the image memory by turning on a first-stage of the freeze switch when a two-stage operation type switch is used as the freeze switch, and displaying the still image to a display unit, and control of enlarging the still image which is stored to the image memory by the electronic variable power circuit and displaying this enlargement still image to a display unit when an electronic variable power switch is operated during the display of the still image, and control of recording the enlargement still image in a recording device by a second-stage operation of the freeze switch.
4. An electronic endoscope apparatus according to claim 1 :
wherein the control that a still image signal is stored in the image memory by operation of a freeze switch, the electronic variable power circuit performs variable power processing by operation of an electronic variable power switch, and a still image signal, which is given the variable power processing, is stored in the recording device; and
wherein the control circuit performs such control that a confirmation message of whether a still image signal at a present magnification is sufficient is displayed when the electronic variable power switch is operated, and a still image signal is recorded in the recording device when the present magnification is acknowledged.