5.12 Search

 

 

 

DVD-V5000 DVD Player

 

 

RS-232 Command Protocol

Integer

Speed Parameter

Speed

60

46~90

1/1

 

30

23~45

½

 

15

12~22

¼

 

7

6~11

1/8

 

4

3~5

1/16

 

1

0~2

1/30

 

NOTE: DVD only offers fixed reverse speeds that varies from about 1/8 to about 1/16 depending on the transfer rate.

NOTE: VCD only offers 1/2 to 1/16 forward speeds. Reverse speed is not available for VCD. Speeds are approximate values only.

Execution :

 

 

 

String

Status Return

DVD player

 

4SPMF<CR>

R<CR>

Play mode to 1/16 speed forward

 

30SP<CR>

R<CR>

Multi-Speed to ½ Multi-Speed

 

4SPMR<CR>

R<CR>

Slow speed reverse

5.12 Search

Function

:

Search to specified address

Format

:

Address SE

Explanation : The specified address is written into the Search Register in accordance with the current Search address mode.

When the Search command is sent to the player, the specified address is compared with the current address. The pick-up is moved so that the difference becomes 0.

Upon reaching the specified address, the player enters the Pause mode for a CD or the Still mode for others disc types. The player then returns the completed status message. If the player misses the specified address or cannot find it, an error message (E06 or E12) is returned. However, if the disc program disallows a Time, Chapter or Title Search, the player ignores the command and an error message (E04) is returned. In addition, if the disc program blocks the Pause command, the player ignores the command.

The DVD-V5000 does not accept other commands during the execution of a Search command, returning an E04 error message. After issuing a Search command, wait until the Return (R) status appears before issuing another command. An exception to this rule is the Mark Frame Play command (i.e.

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Pioneer RS-232C manual Search to specified address
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RS-232C specifications

The Pioneer RS-232C is a significant component in the realm of communication technology, especially known for its application in serial communications. Initially introduced in the 1960s as part of the EIA-232 standard, RS-232C has evolved through various iterations to become a foundational interface for connecting data communication equipment (DCE) with data terminal equipment (DTE). This article outlines its main features, technologies, and characteristics.

One of the hallmark features of RS-232C is its ability to facilitate point-to-point communication. It allows for a direct link between two devices, making it suitable for a variety of applications, including modems, printers, computers, and other peripherals. The RS-232C interface typically uses a 25-pin connector, although a 9-pin variant is also common in many modern devices. This interface is based on serial communications, where bits are sent sequentially over a single channel, leveraging fewer wires compared to parallel communication methods.

In terms of technology, RS-232C operates primarily at voltage levels of +12V to -12V, which provide the necessary signaling for data transmission. The standard supports baud rates ranging from 300 to 115200 bps, accommodating various data transfer speeds depending on the needs of the hardware involved. RS-232C defines various electrical characteristics and timing requirements, ensuring robust performance over relatively short distances, typically up to 15 meters, depending on the baud rate.

Another essential aspect of the RS-232C standard is its use of asynchronous communication, allowing devices to transmit data without having to synchronize their clocks. Each data packet typically consists of a start bit, a predefined number of data bits (usually 7 or 8), an optional parity bit for error-checking, and one or more stop bits. This method allows for error detection and ensures data integrity during transmission.

Despite its age, the RS-232C interface remains relevant, especially in industrial applications, instrumentation, and legacy systems. Its simplicity, low cost, and widespread acceptance make it a versatile choice for connecting various devices, even in a world increasingly dominated by USB and other modern interfaces.

In conclusion, the Pioneer RS-232C is a remarkable testament to the enduring nature of serial communication technology. Its straightforward design, reliability, and ease of integration continue to make it a staple in numerous applications, underscoring its significance in the landscape of data communication.
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