摘要:
An improved charged coupled device time base corrector system to compensate for a change in the phase or frequency of input video signals, as occurs in the playback of a video tape recorder, by changing the nominal delay through the corrector, comprising, in combination, an input feedback circuit and an output feedback circuit. The input feedback circuit includes two cascaded infinite gain circuits, an infinite gain phase detector followed by an infinite gain voltage amplifier which gives an error voltage that controls the frequency of the voltage controlled oscillator (VCO) utilized to control the system delay. The output servo loop always adapts itself to the input error voltage. The VCO is thereby driven at a rate of change of its frequency proportional to the incoming error signal. .
摘要:
A time base corrector for use in defluttering video signals employs a pair of analog shift registers which functionally sandwich a buffer register. Signals are serially applied to one register, say at a fluttering rate; then parallel shifted to the buffer register; then parallel shifted to the second analog shift register; then serially clocked out of the second analog shift register at a reference rate. With such signal processing, successive signals always follow the same signal path, thereby avoiding the prior art need for complementary circuit components. Components of the time base corrector form parts of a solid state device, means being provided therefor to assure that charge vestiges cannot occur after charge shifting.
摘要:
A circuit for correcting a fluttering video signal to conform to a standard time base utilizes a set of analog shift registers that are specially adapted to permit controlled parallel transfer of video line-scan information between registers. Such provision for parallel transfers permits exclusive assignment of input and output functions (and corresponding clocking) to respective registers. In a presently preferred implementation, three charge-transfer-type registers are aligned side by side on a single "chip" and control of parallel charge transfers between each cooperating pair of adjacent registers is achieved through the use of an interposed electrode structure.
摘要:
A time base corrector for removing time base errors from video signal information of a type including synchronizing pulses is provided. A storage means in the form of a charge coupled device (CCD) has the video information coupled to its input. A start-stop oscillator in conjunction with a preset counter coupled to the storage means clocks the video information into the storage means so as to stop the clock when the input signal information has been transferred to the output terminal of the storage means. A local reference restarts the clock and the stored input signal information is clocked out in synchronism with the local reference.
摘要:
An image capturing apparatus comprises an interface configured to connect to an external apparatus, a transmitting unit configured to transmit image data to an external apparatus connected by the interface, a processing unit configured to encode the image data with a predetermined format, a determination unit configured to determine whether or not image data to be encoded by the processing unit includes decoding information for decoding the image data, and a control unit configured to switch, based on the determination result, between processing for transmitting image data encoded by the processing unit and the decoding information to the external apparatus and processing for transmitting an image file in which image data including the decoding information is encoded to the external apparatus.
摘要:
A reproducing apparatus for reproducing a signal by moving a record bearing medium and a reproducing head relative to each other is provided with a time base corrector for correcting the time base of the signal reproduced. The time base corrector is characterized in that the operating state thereof is changed from one state over to another according to whether or not the controlled movement of the medium and the head relative to each other is in a steady state.
摘要:
A reproducing apparatus for reproducing a signal by moving a record bearing medium and a reproducing head relative to each other is provided with a time base corrector for correcting the time base of the signal reproduced. The time base corrector is characterized in that the operating state thereof is changed from one state over to another according to whether or not the controlled movement of the medium and the head relative to each other is in a steady state.
摘要:
A time base correction circuit for correcting time base error commonly present in two or more signals having components in different frequency bands, wherein the number of stages of the respective clock response delay elements is reduced. A single clock generator supplies clock pulse signals for plural clock response delay elements. The clock generator output is connected directly to the clock response delay element to which is applied the input signal having the highest frequency component. Frequency dividers are connected between the clock generator and each of the other clock response delay elements.
摘要:
A time-axis of a digital video-signal is converted to a standard time-axis by changing a clock signal contained therein to a standard clock signal and by locking phases of input synchronizing signals contained therein onto the phase of the standard clock signal through a memory for alternately writing and reading the digital video signal at one half of the period of the standard clock signal. As a result, the time-axis correction of the digital video signal is efficiently effected through the memory having a small capacity and a simplified controlling arrangement.
摘要:
A magnetic reproducing apparatus which has a pair of main rotatable heads having different azimuth angles and a pair of auxiliary rotatable heads having different azimuth angles. When a magnetic tape is played back while it runs at a speed different from that at which it runs during a recording mode, playback output signals from the main and auxiliary rotatable heads are switched over to replace a reduction in the outputs from the main rotatable heads with the outputs from the auxiliary rotatable heads to produce a combined playback output signal. The combined playback output signal is passed through a variable delay line having a delay time varied by an output from a detector circuit which detects variations in horizontal synchronous signal intervals of the combined playback output signal. This varied delay time of the variable delay line can eliminate any skew distortions which would appear on a displayed image on the screen due to the variations in horizontal synchronous signal intervals of the combined playback output signal.