Abstract: A communication device includes: a signal generator configured to generate a first signal and supply the first signal to a telephone line; a terminator having a variable terminal impedance as seen from the telephone line; a detector configured to detect a difference between the terminal impedance and a line impedance of the telephone line; and a controller configured to determine the terminal impedance so that the difference is reduced.

Abstract: A communication device includes: a signal generator configured to generate a first signal and supply the first signal to a telephone line; a terminator having a variable terminal impedance as seen from the telephone line; a detector configured to detect a difference between the terminal impedance and a line impedance of the telephone line; and a controller configured to determine the terminal impedance so that the difference is reduced.

Abstract: An aspect of the invention provides a communication terminal device that comprises: a communication counterpart information notification contract determination unit configured to determine if a counterpart communication terminal device communication received through a line has a communication counterpart information notification contract; and a communication controller configured to change a communication time parameter when the communication counterpart information notification contract determination unit determines that the counterpart communication terminal device of the received communication has the communication counterpart information notification contract.

Abstract: A communication terminal apparatus is provided capable of preventing a misunderstanding that the external attachment telephone is hooked up, so that the external attachment telephone can be correctly shifted to a receiving mode. In the apparatus, a ring signal detecting section detects a ring signal sent by a line exchange machine from a line; and a hookup detecting section monitors a line voltage of the line and detects a hookup of an external attachment telephone. In the hookup detecting section, a line voltage detecting section detects the line voltage on the line; a reference voltage outputting section outputs a reference voltage; a threshold value voltage switching section switches to a threshold value voltage representing a first voltage level or switches to a threshold value voltage representing a second voltage level; and a voltage comparing section compares the reference voltage with the line voltage when the ring signal is detected.

Abstract: An aspect of the invention provides a communication terminal device that comprises: a communication counterpart information notification contract determination unit configured to determine if a counterpart communication terminal device communication received through a line has a communication counterpart information notification contract; and a communication controller configured to change a communication time parameter when the communication counterpart information notification contract determination unit determines that the counterpart communication terminal device of the received communication has the communication counterpart information notification contract.

Abstract: A digital camera for portable equipment includes a light emitting device; an electrically-driven light quantity controller for controlling a quantity of light emitted from the light emitting device; and a system controller which drives the light quantity controller and the light emitting device and controls operations of the light quantity controller and the light emitting device. In a state where the light emitting device is ON, the system controller turns the light emitting device OFF when the system controller drives the light quantity controller to capture an object image.

Abstract: A communication terminal apparatus is provided capable of preventing a misunderstanding that the external attachment telephone is hooked up, so that the external attachment telephone can be correctly shifted to a receiving mode. In the apparatus, a ring signal detecting section detects a ring signal sent by a line exchange machine from a line; and a hookup detecting section monitors a line voltage of the line and detects a hookup of an external attachment telephone. In the hookup detecting section, a line voltage detecting section detects the line voltage on the line; a reference voltage outputting section outputs a reference voltage; a threshold value voltage switching section switches to a threshold value voltage representing a first voltage level or switches to a threshold value voltage representing a second voltage level; and a voltage comparing section compares the reference voltage with the line voltage when the ring signal is detected.

Abstract: In a digital camera having a red-eye reduction bracket photographing mode, a plurality of bracket photographing operations are carried out at a predetermined second interval, in which a strobe unit pre-emits strobe flash emission and, after the lapse of a predetermined first time from the pre-emission, emits main strobe flash emission to pickup an image by an image pickup unit. The image data obtained by each bracket photographing operation is written in a cache memory. Upon completion of the writing of the image data, the latter is read from the cache memory and is indicated in an image displaying LCD unit. A user can observe the indicated image data while switching the same by a selection switch. Consequently, only the image data selected by the user using an OK switch can be recorded in an image recording medium.

Abstract: A digital camera for portable equipment includes a light emitting device; an electrically-driven light quantity controller for controlling a quantity of light emitted from the light emitting device; and a system controller which drives the light quantity controller and the light emitting device and controls operations of the light quantity controller and the light emitting device. In a state where the light emitting device is ON, the system controller turns the light emitting device OFF when the system controller drives the light quantity controller to capture an object image.

Abstract: In a digital camera having a red-eye reduction bracket photographing mode, a plurality of bracket photographing operations are carried out at a predetermined second interval, in which a strobe unit pre-emits strobe flash emission and, after the lapse of a predetermined first time from the pre-emission, emits main strobe flash emission to pickup an image by an image pickup unit. The image data obtained by each bracket photographing operation is written in a cache memory. Upon completion of the writing of the image data, the latter is read from the cache memory and is indicated in an image displaying LCD unit. A user can observe the indicated image data while switching the same by a selection switch. Consequently, only the image data selected by the user using an OK switch can be recorded in an image recording medium.

Abstract: A fill-in light emitting apparatus having an illuminating mechanism for emitting illumination light whose color temperature can be varied; a color temperature metering mechanism for measuring the color temperature of the external light; and a color temperature controlling mechanism for varying the color temperature of the illumination light in accordance with color temperature data measured by the color temperature metering mechanism.

Abstract: A fill-in light emitting apparatus having an illuminating mechanism for emitting illumination light whose color temperature can be varied; a color temperature metering mechanism for measuring the color temperature of the external light; and a color temperature controlling mechanism for varying the color temperature of the illumination light in accordance with color temperature data measured by the color temperature metering mechanism.

Abstract: A fill-in light emitting apparatus having an illuminating mechanism for emitting illumination light whose color temperature can be varied; a color temperature metering mechanism for measuring the color temperature of the external light; and a color temperature controlling mechanism for varying the color temperature of the illumination light in accordance with color temperature data measured by the color temperature metering mechanism.

Abstract: A record and play-back system in a still video device, in which a picture signal and an audio signal associated therewith are recorded on a first track and a second track of a recording medium, wherein a first code signal and a second code signal are recorded together with the associated picture signal and the associated audio signal to discriminate that the respective picture signal and audio signal are recorded together with the corresponding audio signal or the picture signal. The second track is played-back when the first code signal is recorded on the first track upon play-back of the first track. The audio signal can be be post-recorded on the second track when no signal is recorded on the second track.

Abstract: A fill-in light emitting apparatus having an illuminating mechanism for emitting illumination light whose color temperature can be varied; a color temperature metering mechanism for measuring the color temperature of the external light; and a color temperature controlling mechanism for varying the color temperature of the illumination light in accordance with color temperature data measured by the color temperature metering mechanism.

Abstract: A fill-in light emitting apparatus having an illuminating mechanism for emitting illumination light whose color temperature can be varied; a color temperature metering mechanism for measuring the color temperature of the external light; and a color temperature controlling mechanism for varying the color temperature of the illumination light in accordance with color temperature data measured by the color temperature metering mechanism.

Abstract: An electronic still video apparatus in which, when an image releasing operation is effected, image signals are picked up and recorded on a recording medium, and when a sound receipt operation starts, sound signals are received for a predetermined period of time, so that the received sound signals are recorded on the recording medium when a sound releasing operation is effected. The electronic still video apparatus has an AV record mode in which the image signals and the sound signals are recorded on the recording medium in corresponding fashion. The image signals are recorded prior to the recording of the sound signals, regardless of the receipt of the sound signals in the AV record mode when the image release operation is effected.

Abstract: A fill-in light emitting apparatus having an illuminating mechanism for emitting illumination light whose color temperature can be varied; a color temperature metering mechanism for measuring the color temperature of the external light; and a color temperature controlling mechanism for varying the color temperature of the illumination light in accordance with color temperature data measured by the color temperature metering mechanism.

Abstract: A record and play-back system in a still video device, in which a picture signal and an audio signal associated therewith are recorded on a first track and a second track of a recording medium, wherein a first code signal and a second code signal are recorded together with the associated picture signal and the associated audio signal to discriminate that the respective picture signal and audio signal are recorded together with the corresponding audio signal or the picture signal. The second track is played-back when the first code signal is recorded on the first track upon play-back of the first track. The audio signal can be be post-recorded on the second track when no signal is recorded on the second track.

Abstract: A strobe apparatus includes a light emitter which emits strobe light toward an object to be photographed, and a color temperature detector which detects a color temperature of ambient light reflected by the object. A controller varies a color temperature of the strobe light in accordance with the color temperature of the reflected ambient light. Thus, the color temperature of the object is made substantially identical to a predetermined value corresponding to a specific spectral sensitivity of an image pickup device.