Sanyo Electric Co., Ltd.

Youji Sugiura

Hiroshi Okamoto

Riichi Furukawa

Satoshi Nishimura

Kenichi Sato

A comment statement provided within a program code statement is detected, and a processing according to a special command for executing an effect if such a special command is present in the comment statement is executed. The original program code statement may be ignored. Thus, an improved apparatus and an old apparatus can be operated using the same program, and the improved apparatus can execute the special command statement.

Apparatus and method for program execution

In a still picture reproduction system used for presentation of pictures in museums, a particular still picture can be retrieved rapidly by applying a retroactive reproduction function. When the mode is switched from a normal reproduction mode to a retroactive reproduction mode by a mouse, only the first still picture of a series of still pictures reproduced in the normal reproduction mode is reproduced and displayed on an HDTV. These first still pictures in each of a number of series are selectively and manually switched in sequence.

Still picture reproduction system that allows skip

The present image reproduction apparatus detects a comment statement provided to a program code statement, and executes a processing according to a special command for executing an image effect inherent in the image reproduction apparatus if such a special command is present in the comment statement, ignoring the original program code statement. Thus, an improved type image reproduction apparatus and an old type image reproduction apparatus can be operated together, and the improved apparatus can execute such a special command statement.

Apparatus and method for program execution, and image reproduction

Still picture reproduction system that allows skip retrieval

Sound synthesizing apparatus

A circuit for demodulating either an MFM (modified frequency modulated) or an FM (frequency modulated) self-clocking-information signal is adapted to measure a time period corresponding to a signal reversion period and quantize the measured time period, whereby the quantized output determines a signal reversion period. Pulses of the number corresponding to the quantized output are generated and clock pulses for demodulating the original data are regenerated based on the above described pulses. In the case where the self-clocking-information signal is MFM, the original data is demodulated by reading the data regenerated based on the said pulses of the number corresponding to the quantized output based on the regenerated clock pulses. In the case where the self-clocking-information signal is FM, the original data is demodulated by reading the specified quantized output based on the above described regenerated clock pulses.

Demodulating circuit for self-clocking-information

An analog sound signal the time axis of which is compressed is sampled responsive to a write clock signal and the sampled output is stored in an analog shift register having a given capacity, whereupon the stored signal is read out from the analog shift register responsive to a read clock signal the frequency of which is smaller than that of the write clock signal. The above described operation is alternately repeated, whereby the output signal read out from the analog shift register is compiled for sound synthesization. The synthesizing junction of the sound signal is controlled by a microcomputer. The microcomputer is adapted to evaluate the similarity of the data concerning the waveform at the trailing end portion of a preceding sound element stored in the random-access memory and the data concerning the waveform at the leading end portion of the succeeding sound element stored in the random-access memory. Evaluation of similarity of the waveforms is effected by evaluating a mean square error or a mutual correlation function of two sets of data. The shift amount of the leading end of the succeeding sound element to be joined to the trailing end portion of the preceding sound element is determined based upon the result of the evaluation, whereby a read circuit is controlled to correct the time axis of the succeeding sound element, thereby to achieve continuity of the waveform at the synthesizing junction of the preceding and succeeding sound elements.

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Gifu-ken, Japan

Youji Sugiura