Abstract: A method and apparatus for adjustment of the white balance of a CRT display system enabling white balance adjustment to be performed in a short time and a television receiver using the same. The white balance adjustment apparatus has a level adjustment circuit, an attenuation resistor, a video signal output circuit, a coupling capacitor, and a synchronous-signal-tip level clamp circuit and is connected to the cathode electrode. The level adjustment circuit has a variable amplifier which amplifies only the video signal component V, a synchronous signal separation circuit, a variable amplifier for causing attenuation of the horizontal synchronous signal H-SYNC, a signal addition circuit, and an AND gate. In the white balance adjustment mode, the ratio of levels of the video signal and synchronous signal is changed from the usual 0.714:0.218 to, for example, 0.714:0.005.

Abstract: A coil (11) is connected in series to a primary winding (1a) of a flyback transformer (1). A series circuit of a capacitor (15) and a switching circuit (12) is connected in parallel to the coil (11). By turning on and off the switching circuit (12), the connection of the capacitor (15) to the coil (11) is switched, to thereby connect or disconnect the coil (11) in an AC fashion. Therefore, it is possible to realize a high voltage regulating circuit which can be made inexpensive.

Abstract: An acoustic sound reproducing system includes an audible signal reproducing apparatus, television receiver and a speaker system. The audible signal reproducing apparatus and the speaker system are connected to the television receiver. The television receiver has a power switch and a selecting switch which exchanges an output signal from the audio signal reproducing apparatus for an output signal from the television receiver when the power switch is changed to an on-position.

Abstract: A video camera with a tape deck mechanism in which the rotary head drum and tape loading device is inserted completely into a dead space in the tape cassette, the lid of the cassette is then closed and the recording/playback operation performed. The tape deck mechanism is reduced in size by having multiple chassis that slide into and fold over each other with the tape cassette contained therein. The tape deck mechanism operates in conjunction with a special tape cassette to increase the available dead space by moving the cassette tape reels apart when the head drum chassis slides into another chassis holding the cassette. The lid of the cassette is opened with a mechanism that does require pressure against the cassette to overcome the lid-closing spring of the cassette. The tape deck mechanism can be arranged with the known video camera electronics and optics in various configurations to provide a compact video camera.

Abstract: A tape cassette includes a case body consisting of an upper half case and a lower half case, a pair of hubs contained in the case body and holding a magnetic tape thereon, and a locking member placed in a recess formed in the inner surface of the lower half case so as to be brought into engagement with the respective circumferences of the hubs to lock the hubs and to be disengaged from the respective circumferences of the hubs to unlock the hubs. The locking member having a tail portion having a surface consisting of convex, curved working surfaces, and the unlocking pin of a recording/reproducing apparatus engaging either of the convex, curved working surfaces to shift the locking member to the unlocked position when the tape cassette is inserted in the recording/reproducing apparatus.

Abstract: The insertion effects of hearing aids are determined and compensated to restore the ability to have directional hearing in individuals wearing hearing aids. In one aspect a method involves finding the ratio of the unaided head related transfer function to the aided head related transfer function and then designing a hearing aid filter that is the inverse of that derived insertion effect, thereby restoring the ability to hear interaural differences in aided systems both in level and in time of arrival to improve hearing in the presence of noise. The insertion effects can be derived either through frequency domain analyses, using the above-mentioned transfer function calculations and measurements, or in another aspect through time domain analyses, using optimal filter calculations and measurement obtained using a successive data acquisition system that is subsequently time aligned by recording trigger pulses with the data.

Abstract: A facsimile broadcasting receiver comprising an index program detector and a recording means, the detector detecting an index program number from a facsimile signal. The detected index program number is recorded into the recording means so that the corresponding index program will be automatically recorded.

Abstract: An adaptively controlled noise reduction device in which an input video signal is supplied to first, second, and third adders and in which an output of the first adder is supplied to the second adder via a memory responsive to a controller whereby the memory provides a controllable delay. An output of the second adder is supplied via a first coefficient multiplication unit having variable attenuation that is controlled by the controller to the first adder as well as via a second coefficient multiplication unit having variable attenuation that is controlled by the controller to the third adder. A change-over switch responsive to the controller outputs either a signal from the third adder or from the memory. Therefore, a signal is output even during the delay period produced by the memory when the signal is delayed between the first and second adders.

Abstract: A digital signal recording and/or reproducing apparatus which converts an input analog signal into a digital signal and records the digital signal on a recording medium, or which reproduces a digital signal recorded on a recording medium and converts the digital signal into an analog signal has an analog signal level controller and a digital signal level controller connected in front of and after an A/D converter or a D/A converter and the digital signal level controller and the analog signal level controller are controlled in correlation with each other, whereby the S/N ratio of a recording signal or a reproducing signal can be improved.

Abstract: A TV receiver has a tuner and a controller for controlling a tuning operation of the tuner. The controller includes a calculation unit for effecting a calculation of preferred stations using as parameters tuned channels and the times for which the channels are selected. A tuning frequency arrangement storing unit determines the channels that are frequently watched by a user on the basis of the calculation and stores indications of the channels. The channel indications thus stored are read out in ranked order to perform a tuning operation in response to successive actuation of a preferred-station key.

Abstract: A color television image display apparatus wherein an image quality control signal is generated with regard to every field of an input video signal in accordance with sampled data obtained therefrom and then is supplied to an image signal processor to execute automatic adjustment of the image quality is equipped with a delay circuit having a delay time substantially equal to the time required for generation of the image quality control signal, and the video signal is supplied via such delay circuit to the video signal processor so that both the image quality control signal and the video signal to be controlled by such image quality control signal are inputted to the video signal processor substantially without a timing difference therebetween.

Abstract: An infrared-ray cordless microphone including a modulator for modulating an acoustic-to-electric converted sound signal through a predetermined process; and an infrared-ray transmitter for transmitting an output infrared signal obtained by converting the modulated sound signal from the modulator; wherein the infrared-ray transmitter is disposed at a lower end of the microphone body. There is also provided an infrared-ray cordless microphone system comprising such a microphone and a sound output means which includes an infrared-ray receiver for receiving the infrared signal from the microphone, a demodulator for demodulating the received infrared signal, and an electric-to-acoustic converter for converting the demodulated signal into a sound signal.

Abstract: An apparatus reproduces an information signal modulating a carrier signal recorded on a magnetic tape. A portion of the signal being boosted in accordance with a characteristic of the information signal. The apparatus comprises a playback device for reproducing the information signal from the magnetic tape, a detector for detecting the levels of the portion of the signal and the rest of the signal respectively and comparing the levels with each other, and a judging circuit for judging the characteristics of the signal in accordance with the output of the detector.