公开(公告)号：EP0779713A1

公开(公告)日：1997-06-18

申请号：EP96910207.8

申请日：1996-04-19

申请人： SONY CORPORATION

发明人： MOGI, Yasuhide ,  YAMAUCHI, Etsuro

IPC分类号： H03L7/06

CPC分类号： H04N5/073 ,  H03L7/085 ,  H03L7/093 ,  H03L7/0991 ,  H03L7/0994 ,  H04N5/0736 ,  H04N9/45

摘要： Signal (digital sine wave signals) (Sd) stored in a memory means (3) are read. The phase of input signal (analog sine wave signal) (Sr) supplied to an input terminal is compared with that of signal (Sa) generated by D/A-converting the signals (Sd) (by means of a comparator (2)), the reading address signal of the memory means (3) is controlled based on the phase error signal (a) generated as a result of the comparison by the comparator (2) (by means of an address forming circuit (5)). Thus, the phase of the digital sine wave signals (Sd) supplied to an output terminal (6) is synchronized with that of the analog sine wave signals (Sr) supplied to the input terminal (1). Desired digital signals synchronized with the phase of the input signals can be generated by processing the digital signals with a simple constitution.

摘要翻译： 读取存储在存储器装置（3）中的信号（数字正弦波信号）（Sd）。 提供给输入端子的输入信号（模拟正弦波信号）（Sr）的相位与通过D / A转换信号（Sd）（借助比较器（2））产生的信号（Sa）进行比较， 基于由比较器（2）（借助于地址形成电路（5））的比较结果产生的相位误差信号（a）来控制存储装置（3）的读取地址信号。 因此，提供给输出端子（6）的数字正弦波信号（Sd）的相位与提供给输入端子（1）的模拟正弦波信号（Sr）的相位同步。 可以通过以简单的结构处理数字信号来产生与输入信号的相位同步的期望的数字信号。

公开(公告)号：EP0767590A1

公开(公告)日：1997-04-09

申请号：EP96910206.0

申请日：1996-04-19

申请人： SONY CORPORATION

发明人： YAMAUCHI, Etsuro ,  MOGI, Yasuhide ,  FUKUDA, Tokuya

IPC分类号： H04N9/74

CPC分类号： H04N9/475 ,  H04N9/76

摘要： When a continuous wave signal synchronized with a first color subcarrier signal is generated (color subcarrier extracting circuit 2, phase error detecting circuit 3, A/D converting circuit 4, digital oscillating circuit 5) from an analog video signal containing a first color subcarrier signal supplied to an input terminal 1 and a digital video signal containing a color signal component supplied to an input terminal 7 is converted (digital video signal converting circuit 6) into a composite video signal containing a carrier chrominance signal, a color signal component is converted into a carrier chrominance signal by using the continuous wave signal and a phase of a first color subcarrier signal contained in the analog video signal and a phase of a second color subcarrier signal of a composite video signal formed from the digital video signal are synchronized with each other.
According to this arrangement, a phase of the carrier chrominance signal of the analog video signal and a phase of a carrier chrominance signal contained in the composite video signal formed from the digital video signal can be synchronized with each other by the simple arrangement, for example, and hence an image expressed by the digital video signal and an image expressed by the analog video signal can be easily synthesized with each other.

摘要翻译： 当产生具有第一彩色副载波信号同步的连续波信号（彩色副载波分离电路2，相位误差检测电路3，A / D转换电路4中，数字振荡电路5）从在模拟视频信号包含第一彩色副载波信号 在输入端1提供给和含在输入端7提供给彩色信号分量的数字视频信号被转换（数字图像信号变换电路6）代入含有载体色度信号的复合视频信号，彩色信号分量被转换为 通过使用连续波信号和包含在模拟视频信号的第一彩色副载波信号的相位和从数字视频信号形成的复合视频信号的第二彩色副载波信号的相位的载波色度信号与同步海誓山盟 ， 。根据这种布置，该模拟视频信号的载波色度信号和包含在从数字视频信号形成的复合视频信号中的载波色度信号的相位的相位可彼此通过简单的布置同步，对于实施例 ，因此由数字视频信号和由模拟视频信号表示的图像表示的图像可以容易地与海誓山盟合成。